172 results on '"Herrero-Bervera, E."'
Search Results
2. Emplacement dynamics and hydrothermal alteration of the Atengo ignimbrite, southern Sierra Madre Occidental, northwestern Mexico
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Agarwal, Amar, Alva-Valdivia, L.M., Rivas-Sánchez, M.L., Herrero-Bervera, E., Urrutia-Fucugauchi, J., and Espejel-García, V.
- Published
- 2017
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3. Expedition 381 facies associations
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McNeill, L.C., primary, Shillington, D.J., additional, Carter, G.D.O., additional, Everest, J.D., additional, Le Ber, E., additional, Collier, R.E., additional, Cvetkoska, A., additional, De Gelder, G., additional, Diz, P., additional, Doan, M.L., additional, Ford, M., additional, Gawthorpe, R.L., additional, Geraga, M., additional, Gillespie, J., additional, Hemelsdaël, R., additional, Herrero-Bervera, E., additional, Ismaiel, M., additional, Janikian, L., additional, Kouli, K., additional, Li, S., additional, Machlus, M.L., additional, Maffione, M., additional, Mahoney, C., additional, Michas, G., additional, Miller, C., additional, Nixon, C.W., additional, Oflaz, S.A., additional, Omale, A.P., additional, Panagiotopoulos, K., additional, Pechlivanidou, S., additional, Phillips, M.P., additional, Sauer, S., additional, Seguin, J., additional, Sergiou, S., additional, and Zakharova, N.V., additional
- Published
- 2019
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4. Site M0079
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McNeill, L.C., primary, Shillington, D.J., additional, Carter, G.D.O., additional, Everest, J.D., additional, Le Ber, E., additional, Collier, R.E., additional, Cvetkoska, A., additional, De Gelder, G., additional, Diz, P., additional, Doan, M.L., additional, Ford, M., additional, Gawthorpe, R.L., additional, Geraga, M., additional, Gillespie, J., additional, Hemelsdaël, R., additional, Herrero-Bervera, E., additional, Ismaiel, M., additional, Janikian, L., additional, Kouli, K., additional, Li, S., additional, Machlus, M.L., additional, Maffione, M., additional, Mahoney, C., additional, Michas, G., additional, Miller, C., additional, Nixon, C.W., additional, Oflaz, S.A., additional, Omale, A.P., additional, Panagiotopoulos, K., additional, Pechlivanidou, S., additional, Phillips, M.P., additional, Sauer, S., additional, Seguin, J., additional, Sergiou, S., additional, and Zakharova, N.V., additional
- Published
- 2019
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5. Expedition 381 summary
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McNeill, L.C., primary, Shillington, D.J., additional, Carter, G.D.O., additional, Everest, J.D., additional, Le Ber, E., additional, Collier, R.E., additional, Cvetkoska, A., additional, De Gelder, G., additional, Diz, P., additional, Doan, M.L., additional, Ford, M., additional, Gawthorpe, R.L., additional, Geraga, M., additional, Gillespie, J., additional, Hemelsdaël, R., additional, Herrero-Bervera, E., additional, Ismaiel, M., additional, Janikian, L., additional, Kouli, K., additional, Li, S., additional, Machlus, M.L., additional, Maffione, M., additional, Mahoney, C., additional, Michas, G., additional, Miller, C., additional, Nixon, C.W., additional, Oflaz, S.A., additional, Omale, A.P., additional, Panagiotopoulos, K., additional, Pechlivanidou, S., additional, Phillips, M.P., additional, Sauer, S., additional, Seguin, J., additional, Sergiou, S., additional, and Zakharova, N.V., additional
- Published
- 2019
- Full Text
- View/download PDF
6. Expedition 381 methods
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McNeill, L.C., primary, Shillington, D.J., additional, Carter, G.D.O., additional, Everest, J.D., additional, Le Ber, E., additional, Collier, R.E., additional, Cvetkoska, A., additional, De Gelder, G., additional, Diz, P., additional, Doan, M.L., additional, Ford, M., additional, Gawthorpe, R.L., additional, Geraga, M., additional, Gillespie, J., additional, Hemelsdaël, R., additional, Herrero-Bervera, E., additional, Ismaiel, M., additional, Janikian, L., additional, Kouli, K., additional, Li, S., additional, Machlus, M.L., additional, Maffione, M., additional, Mahoney, C., additional, Michas, G., additional, Miller, C., additional, Nixon, C.W., additional, Oflaz, S.A., additional, Omale, A.P., additional, Panagiotopoulos, K., additional, Pechlivanidou, S., additional, Phillips, M.P., additional, Sauer, S., additional, Seguin, J., additional, Sergiou, S., additional, and Zakharova, N.V., additional
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- 2019
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7. Magnetic fabric and inferred flow directions of dikes and conesheets of the Miocene Tejeda Caldera Complex, Gran Canaria Island, Spain
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Herrero-Bervera, E. and Calvo-Rathert, M.
- Abstract
The Miocene Tejeda Complex on the Gran Canaria (Canary Islands) is characterized by more than 500 trachytic and phonolitic conesheets, dikes and hypabyssal syenite stocks and subordinate radial dikes from a 20-km diameter intrusive complex in the volcaniclastic fill of the Miocene Tejeda caldera (20 by 35 km) on Gran Canaria, Canary Islands. The dikes intruded concentrically around a central axis or radial symmetry and dip uniformly an average of ~41degrees toward the center. We have conducted a pilot study of magnetic properties as well as Anisotropy of Magnetic Susceptibility (AMS) on a variety of dikes (trachytic, phonolitic and basaltic composition) to investigate the possibility of obtaining petrofabrics results that would allow us to test the origin of the formation of the Tejeda conesheet that most likely resulted from the deformation processes due to resurgent doming initiated by current replenishment of a flat lacollith-like magma chamber. The current ideas indicate that the formation of the cone-shaped fractures were originated by a magma supply exceeding the volume that could be compensated for by up-doming of the overlying caldera fill. Here we present the results of the rock magnetic experiments such as low-field susceptibility vs temperature (k-T), hysteresis loops, SIRM, back-fields as well as successful AMS direction of flows using Kmax determinations.  , The 28th IUGG General Assembly (IUGG2023) (Berlin 2023)
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- 2023
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8. Eastern sites
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Früh-Green, G.L., primary, Orcutt, B.N., additional, Green, S.L., additional, Cotterill, C., additional, Morgan, S., additional, Akizawa, N., additional, Bayrakci, G., additional, Behrmann, J.-H., additional, Boschi, C., additional, Brazleton, W.J., additional, Cannat, M., additional, Dunkel, K.G., additional, Escartin, J., additional, Harris, M., additional, Herrero-Bervera, E., additional, Hesse, K., additional, John, B.E., additional, Lang, S.Q., additional, Lilley, M.D., additional, Liu, H.-Q., additional, Mayhew, L.E., additional, McCaig, A.M., additional, Menez, B., additional, Morono, Y., additional, Quéméneur, M., additional, Rouméjon, S., additional, Sandaruwan Ratnayake, A., additional, Schrenk, M.O., additional, Schwarzenbach, E.M., additional, Twing, K.I., additional, Weis, D., additional, Whattham, S.A., additional, Williams, M., additional, and Zhao, R., additional
- Published
- 2017
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9. Central sites
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Früh-Green, G.L., primary, Orcutt, B.N., additional, Green, S.L., additional, Cotterill, C., additional, Morgan, S., additional, Akizawa, N., additional, Bayrakci, G., additional, Behrmann, J.-H., additional, Boschi, C., additional, Brazleton, W.J., additional, Cannat, M., additional, Dunkel, K.G., additional, Escartin, J., additional, Harris, M., additional, Herrero-Bervera, E., additional, Hesse, K., additional, John, B.E., additional, Lang, S.Q., additional, Lilley, M.D., additional, Liu, H.-Q., additional, Mayhew, L.E., additional, McCaig, A.M., additional, Menez, B., additional, Morono, Y., additional, Quéméneur, M., additional, Rouméjon, S., additional, Sandaruwan Ratnayake, A., additional, Schrenk, M.O., additional, Schwarzenbach, E.M., additional, Twing, K.I., additional, Weis, D., additional, Whattham, S.A., additional, Williams, M., additional, and Zhao, R., additional
- Published
- 2017
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10. Northern sites
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Früh-Green, G.L., primary, Orcutt, B.N., additional, Green, S.L., additional, Cotterill, C., additional, Morgan, S., additional, Akizawa, N., additional, Bayrakci, G., additional, Behrmann, J.-H., additional, Boschi, C., additional, Brazleton, W.J., additional, Cannat, M., additional, Dunkel, K.G., additional, Escartin, J., additional, Harris, M., additional, Herrero-Bervera, E., additional, Hesse, K., additional, John, B.E., additional, Lang, S.Q., additional, Lilley, M.D., additional, Liu, H.-Q., additional, Mayhew, L.E., additional, McCaig, A.M., additional, Menez, B., additional, Morono, Y., additional, Quéméneur, M., additional, Rouméjon, S., additional, Sandaruwan Ratnayake, A., additional, Schrenk, M.O., additional, Schwarzenbach, E.M., additional, Twing, K.I., additional, Weis, D., additional, Whattham, S.A., additional, Williams, M., additional, and Zhao, R., additional
- Published
- 2017
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11. Expedition 357 summary
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Früh-Green, G.L., primary, Orcutt, B.N., additional, Green, S.L., additional, Cotterill, C., additional, Morgan, S., additional, Akizawa, N., additional, Bayrakci, G., additional, Behrmann, J.-H., additional, Boschi, C., additional, Brazleton, W.J., additional, Cannat, M., additional, Dunkel, K.G., additional, Escartin, J., additional, Harris, M., additional, Herrero-Bervera, E., additional, Hesse, K., additional, John, B.E., additional, Lang, S.Q., additional, Lilley, M.D., additional, Liu, H.-Q., additional, Mayhew, L.E., additional, McCaig, A.M., additional, Menez, B., additional, Morono, Y., additional, Quéméneur, M., additional, Rouméjon, S., additional, Sandaruwan Ratnayake, A., additional, Schrenk, M.O., additional, Schwarzenbach, E.M., additional, Twing, K.I., additional, Weis, D., additional, Whattham, S.A., additional, Williams, M., additional, and Zhao, R., additional
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- 2017
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12. Expedition 357 methods
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Früh-Green, G.L., primary, Orcutt, B.N., additional, Green, S.L., additional, Cotterill, C., additional, Morgan, S., additional, Akizawa, N., additional, Bayrakci, G., additional, Behrmann, J.-H., additional, Boschi, C., additional, Brazleton, W.J., additional, Cannat, M., additional, Dunkel, K.G., additional, Escartin, J., additional, Harris, M., additional, Herrero-Bervera, E., additional, Hesse, K., additional, John, B.E., additional, Lang, S.Q., additional, Lilley, M.D., additional, Liu, H.-Q., additional, Mayhew, L.E., additional, McCaig, A.M., additional, Menez, B., additional, Morono, Y., additional, Quéméneur, M., additional, Rouméjon, S., additional, Sandaruwan Ratnayake, A., additional, Schrenk, M.O., additional, Schwarzenbach, E.M., additional, Twing, K.I., additional, Weis, D., additional, Whattham, S.A., additional, Williams, M., additional, and Zhao, R., additional
- Published
- 2017
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13. Western sites
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Früh-Green, G.L., primary, Orcutt, B.N., additional, Green, S.L., additional, Cotterill, C., additional, Morgan, S., additional, Akizawa, N., additional, Bayrakci, G., additional, Behrmann, J.-H., additional, Boschi, C., additional, Brazleton, W.J., additional, Cannat, M., additional, Dunkel, K.G., additional, Escartin, J., additional, Harris, M., additional, Herrero-Bervera, E., additional, Hesse, K., additional, John, B.E., additional, Lang, S.Q., additional, Lilley, M.D., additional, Liu, H.-Q., additional, Mayhew, L.E., additional, McCaig, A.M., additional, Menez, B., additional, Morono, Y., additional, Quéméneur, M., additional, Rouméjon, S., additional, Sandaruwan Ratnayake, A., additional, Schrenk, M.O., additional, Schwarzenbach, E.M., additional, Twing, K.I., additional, Weis, D., additional, Whattham, S.A., additional, Williams, M., additional, and Zhao, R., additional
- Published
- 2017
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14. Preferred Bands of Longitude for Geomagnetic Reversal VGP Paths: Implications for Reversal Mechanisms
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Laj, C., Mazaud, A., Fuller, M., Herrero-Bervera, E., Stone, David B., editor, and Runcorn, S. K., editor
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- 1993
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15. Site M0063
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Andrén, T., primary, Jørgensen, B.B., additional, Cotterill, C., additional, Green, S., additional, Andrén, E., additional, Ash, J., additional, Bauersachs, T., additional, Cragg, B., additional, Fanget, A.-S., additional, Fehr, A., additional, Granoszewski, W., additional, Groeneveld, J., additional, Hardisty, D, additional, Herrero-Bervera, E., additional, Hyttinen, O., additional, Jensen, J.B., additional, Johnson, S., additional, Kenzler, M., additional, Kotilainen, A., additional, Kotthoff, U., additional, Marshall, I.P.G., additional, Martin, E., additional, Obrochta, S., additional, Passchier, S., additional, Quintana Krupinski, N., additional, Riedinger, N., additional, Slomp, C., additional, Snowball, I., additional, Stepanova, A., additional, Strano, S., additional, Torti, A., additional, Warnock, J, additional, Xiao, N., additional, and Zhang, R., additional
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- 2015
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16. Methods
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Andrén, T., primary, Jørgensen, B.B., additional, Cotterill, C., additional, Green, S., additional, Andrén, E., additional, Ash, J., additional, Bauersachs, T., additional, Cragg, B., additional, Fanget, A.-S., additional, Fehr, A., additional, Granoszewski, W., additional, Groeneveld, J., additional, Hardisty, D, additional, Herrero-Bervera, E., additional, Hyttinen, O., additional, Jensen, J.B., additional, Johnson, S., additional, Kenzler, M., additional, Kotilainen, A., additional, Kotthoff, U., additional, Marshall, I.P.G., additional, Martin, E., additional, Obrochta, S., additional, Passchier, S., additional, Quintana Krupinski, N., additional, Riedinger, N., additional, Slomp, C., additional, Snowball, I., additional, Stepanova, A., additional, Strano, S., additional, Torti, A., additional, Warnock, J, additional, Xiao, N., additional, and Zhang, R., additional
- Published
- 2015
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17. Expedition 347 summary
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Andrén, T., primary, Jørgensen, B.B., additional, Cotterill, C., additional, Green, S., additional, Andrén, E., additional, Ash, J., additional, Bauersachs, T., additional, Cragg, B., additional, Fanget, A.-S., additional, Fehr, A., additional, Granoszewski, W., additional, Groeneveld, J., additional, Hardisty, D, additional, Herrero-Bervera, E., additional, Hyttinen, O., additional, Jensen, J.B., additional, Johnson, S., additional, Kenzler, M., additional, Kotilainen, A., additional, Kotthoff, U., additional, Marshall, I.P.G., additional, Martin, E., additional, Obrochta, S., additional, Passchier, S., additional, Quintana Krupinski, N., additional, Riedinger, N., additional, Slomp, C., additional, Snowball, I., additional, Stepanova, A., additional, Strano, S., additional, Torti, A., additional, Warnock, J, additional, Xiao, N., additional, and Zhang, R., additional
- Published
- 2015
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18. Deglaciation dynamics of the Fennoscandian Ice Sheet in the Kattegat, the gateway between the North Sea and the Baltic Sea Basin
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Hyttinen, O., Quintana Krupinski, N., Bennike, O., Wacker, L., Filipsson, H. L., Obrochta, S., Jensen, J. B., Lougheed, B., Ryabchuk, D., Passchier, S., Snowball, I., Herrero-Bervera, E., Andrén, Thomas, Kotilainen, A. T., Hyttinen, O., Quintana Krupinski, N., Bennike, O., Wacker, L., Filipsson, H. L., Obrochta, S., Jensen, J. B., Lougheed, B., Ryabchuk, D., Passchier, S., Snowball, I., Herrero-Bervera, E., Andrén, Thomas, and Kotilainen, A. T.
- Abstract
This paper presents an age–depth model based on an ultra-high-resolution, 80-m-thick sedimentary succession from a marine continental shelf basin, the Kattegat. This is an area of dynamic deglaciation of the Fennoscandian Ice Sheet during the Late Pleistocene. The Kattegat is also a transitional area between the saline North Sea and the brackish Baltic Sea. As such, it records general development of currents and exchange between these two systems. Data for the succession were provided through the Integrated Ocean Drilling Program Site M0060. The site indicates onset of deglaciation at c. 18 ka BP and relatively continuous sedimentation until 13 ka BP. At this point, sediments record a hiatus until c. 9–7 ka BP. The uppermost sedimentary unit contains redeposited material, but it is estimated to represent only the last c. 9–7 ka BP. The age–depth model is based on 17 select, radiocarbon-dated samples and is integrated with a set of physical and chemical proxies. The integrated records provide novel constraints on the timing of major palaeoenvironmental changes, such as the transition from glaciomarine proximal to glaciomarine distal and marine conditions, and their connections to known major events and processes in the region and the North Atlantic. Depositional evidence specifically documents connections between the Fennoscandian Ice Sheet behaviour and atmospheric and oceanic warming. Glacial retreat may have also depended on topographic factors such as changes in basin width and depth, linked to relative sea level changes and land uplift. The results indicate an early response of the Fennoscandian Ice Sheet to changing climate, and the ice sheet's possible influence on oceanic circulation during the Late Pleistocene deglaciation.
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- 2021
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19. Analysis of the natural remanent magnetization of rocks by measuring the efficiency ratio through alternating field demagnetization spectra
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Kohout, T., Kletetschka, G., Donadini, F., Fuller, M., and Herrero-Bervera, E.
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- 2008
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20. An Integrated Paleomagnetic, Multimethod‐Paleointensity, and Radiometric Study on Cretaceous and Paleogene Lavas From the Lesser Caucasus: Geomagnetic and Tectonic Implications
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Calvo‐Rathert, M., primary, Bógalo, M. F., additional, Morales, J., additional, Goguitchaichvili, A., additional, Lebedev, V. A., additional, Vashakidze, G., additional, García‐Redondo, N., additional, and Herrero‐Bervera, E., additional
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- 2021
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21. Geomagnetic field variations in the past: An introduction
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Di Chiara, A., Herrero-Bervera, E., and Tema, E.
- Subjects
Geomagnetic field, secular variation ,secular variation ,Geomagnetic field - Published
- 2020
22. Palaeosecular variations of the geomagnetic field in Africa during the holocene:a review
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Tema, E., Di Chiara, A., Herrero-Bervera, E., Tema, E., Di Chiara, A., and Herrero-Bervera, E.
- Abstract
The importance of the full understanding of the Holocene geomagnetic field spans from human history and archaeology, to palaeoclimatic changes and engineering, to geomagnetic field modelling and unravelling of the geomagnetic field characteristics and anomalies. Unfortunately, the dearth of data from large under-covered areas such as oceans, the African and South American continents, and the southern hemisphere (only 4–6% of the global datasets) dramatically limits our knowledge of the temporal and spatial evolution of the geomagnetic field and its application. Here, a review of all data from the African continent is presented in order to encourage and motivate a new generation of palaeomagnetic and archaeomagnetic studies. New data will sharpen the palaeomagnetism as a dating tool, improve our knowledge of local/global geomagnetic features, and will help to finally answer some of the fundamental questions in palaeomagnetism, like the temporal and spatial distribution of the palaeointensity peaks described, and the origin and evolution of the South Atlantic Anomaly. © 2020 The Author(s). Published by The Geological Society of London. All rights reserved.
- Published
- 2020
23. About this title - Geomagnetic Field Variations in the Past: New Data, Applications and Recent Advances
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Tema, E., primary, Di Chiara, A., additional, and Herrero-Bervera, E., additional
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- 2020
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24. A Gauss-Matuyama polarity transition in a sedimentary record from Mar del Plata City, Argentina
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Ruocco, M., Fuller, M., Haag, M., and Herrero-Bervera, E.
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- 1996
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25. Magmatism, serpentinization and life: Insights through drilling the Atlantis Massif (IODP Expedition 357)
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Früh-Green G.L.[1], Orcutt B.N.[2], Rouméjon S.[1], Lilley M.D.[3], Morono Y.[4], Cotterill C.[5], Green S.[5], Escartin J.[6], John B.E.[7], McCaig A.M.[8], Cannat M.[6], Ménez B.[6], Schwarzenbach E.M.[9], Williams M.J.[10, Morgan S.[11], Lang S.Q.[12], Schrenk M.O.[13], Brazelton W.J.[14], Akizawa N.[15, Boschi C.[16], Dunkel K.G.[17], Quéméneur M.[18], Whattam S.A.[19, Mayhew L.[20], Harris M.[21, Bayrakci G.[21], Behrmann J.-H.[22], Herrero-Bervera E.[23], Hesse K.[24], Liu H.-Q.[25], Ratnayake A.S.[26, Twing K.[13, 14], Weis D.[27], Zhao R.[28], Bilenker L.[27], Institut de Physique du Globe de Paris (IPGP), Institut national des sciences de l'Univers (INSU - CNRS)-IPG PARIS-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), British Geological Survey [Edinburgh], British Geological Survey (BGS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-IPG PARIS-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS), Physics of Geological Processes [Oslo] (PGP), Department of Physics [Oslo], Faculty of Mathematics and Natural Sciences [Oslo], University of Oslo (UiO)-University of Oslo (UiO)-Faculty of Mathematics and Natural Sciences [Oslo], University of Oslo (UiO)-University of Oslo (UiO)-Department of Geosciences [Oslo], University of Oslo (UiO)-University of Oslo (UiO), Institut méditerranéen d'océanologie (MIO), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Hawaii Institute of Geophysics and Planetology (HIGP), University of Hawai‘i [Mānoa] (UHM), Centre National de la Recherche Scientifique (CNRS)-Université de La Réunion (UR)-Université Paris Diderot - Paris 7 (UPD7)-IPG PARIS-Institut national des sciences de l'Univers (INSU - CNRS), Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), University of Wyoming (UW), Department of Geology [Leicester], University of Leicester, Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology in Zürich [Zürich] (ETH Zürich), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), King Fahad University, High Temp Resistant Polymers & Composites Key Lab, Inst Microelect & Solid State Elect, Chengdu University of Technology (CDUT), Institut de Physique du Globe de Paris (IPGP (UMR_7154)), Institut national des sciences de l'Univers (INSU - CNRS)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS), Institut national des sciences de l'Univers (INSU - CNRS)-IPG PARIS-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS), and Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Toulon (UTLN)
- Subjects
Si metasomatism ,010504 meteorology & atmospheric sciences ,IODP Expedition 357 ,Atlantis Massif ,Detachment faulting ,serpentinization ,deep biosphere ,Geochemistry ,[SDU.STU]Sciences of the Universe [physics]/Earth Sciences ,010502 geochemistry & geophysics ,01 natural sciences ,Geochemistry and Petrology ,Ultramafic rock ,14. Life underwater ,Metasomatism ,ComputingMilieux_MISCELLANEOUS ,0105 earth and related environmental sciences ,Peridotite ,geography ,geography.geographical_feature_category ,Gabbro ,Serpentinization ,Geology ,Massif ,Seafloor spreading ,Detachment fault ,Deep biosphere ,[SDU]Sciences of the Universe [physics] ,[SDE]Environmental Sciences ,Mafic - Abstract
Highlights • Seabed rock drills and real-time fluid monitoring for first time in ocean drilling • First time recovery of continuous sequences along oceanic detachment fault zone • Highly heterogeneous rock type and alteration in shallow detachment fault zone • High methane and hydrogen concentrations in Atlantis Massif shallow basement • Oceanic serpentinites potentially provide important niches for microbial life Abstract IODP Expedition 357 used two seabed drills to core 17 shallow holes at 9 sites across Atlantis Massif ocean core complex (Mid-Atlantic Ridge 30°N). The goals of this expedition were to investigate serpentinization processes and microbial activity in the shallow subsurface of highly altered ultramafic and mafic sequences that have been uplifted to the seafloor along a major detachment fault zone. More than 57 m of core were recovered, with borehole penetration ranging from 1.3 to 16.4 meters below seafloor, and core recovery as high as 75% of total penetration in one borehole. The cores show highly heterogeneous rock types and alteration associated with changes in bulk rock chemistry that reflect multiple phases of magmatism, fluid-rock interaction and mass transfer within the detachment fault zone. Recovered ultramafic rocks are dominated by pervasively serpentinized harzburgite with intervals of serpentinized dunite and minor pyroxenite veins; gabbroic rocks occur as melt impregnations and veins. Dolerite intrusions and basaltic rocks represent the latest magmatic activity. The proportion of mafic rocks is volumetrically less than the amount of mafic rocks recovered previously by drilling the central dome of Atlantis Massif at IODP Site U1309. This suggests a different mode of melt accumulation in the mantle peridotites at the ridge-transform intersection and/or a tectonic transposition of rock types within a complex detachment fault zone. The cores revealed a high degree of serpentinization and metasomatic alteration dominated by talc-amphibole-chlorite overprinting. Metasomatism is most prevalent at contacts between ultramafic and mafic domains (gabbroic and/or doleritic intrusions) and points to channeled fluid flow and silica mobility during exhumation along the detachment fault. The presence of the mafic lenses within the serpentinites and their alteration to mechanically weak talc, serpentine and chlorite may also be critical in the development of the detachment fault zone and may aid in continued unroofing of the upper mantle peridotite/gabbro sequences. New technologies were also developed for the seabed drills to enable biogeochemical and microbiological characterization of the environment. An in situ sensor package and water sampling system recorded real-time variations in dissolved methane, oxygen, pH, oxidation reduction potential (Eh), and temperature and during drilling and sampled bottom water after drilling. Systematic excursions in these parameters together with elevated hydrogen and methane concentrations in post-drilling fluids provide evidence for active serpentinization at all sites. In addition, chemical tracers were delivered into the drilling fluids for contamination testing, and a borehole plug system was successfully deployed at some sites for future fluid sampling. A major achievement of IODP Expedition 357 was to obtain microbiological samples along a west–east profile, which will provide a better understanding of how microbial communities evolve as ultramafic and mafic rocks are altered and emplaced on the seafloor. Strict sampling handling protocols allowed for very low limits of microbial cell detection, and our results show that the Atlantis Massif subsurface contains a relatively low density of microbial life.
- Published
- 2018
26. Coring induced sediment fabrics at IODP Expedition 347 Sites M0061 and M0062 identified by anisotropy of magnetic susceptibility (AMS): criteria for accepting palaeomagnetic data
- Author
-
Snowball, I, Almqvist, B, Lougheed, B C, Wiers, S, Obrochta, S, Herrero-bervera, E, Snowball, I, Almqvist, B, Lougheed, B C, Wiers, S, Obrochta, S, and Herrero-bervera, E
- Abstract
Anisotropy of magnetic susceptibility data obtained from discrete sub-samples recovered from two Integrated Ocean Drilling Program sites (Expedition 347 sites M0061 and M0062 in the Baltic Sea) by an Advanced Piston Corer are compared to results obtained on sub-samples recovered by replicate 6 m long Kullenberg piston cores. Characteristic natural remanence directions were obtained from the total of 1097 sub-samples using principal component analyses. The three principal anisotropy axes of sub-samples taken from Advanced Piston Core liners align to the sub-sample axes, with the maximum axis (K1) parallel to the split core surfaces, possibly caused by outwards relaxation of the core-liners after splitting. A second anomalous anisotropy fabric is characterized by steep values of the angular difference between the inclination of the minimum anisotropy axes (K3) and that expected for horizontal bedding (90°). This fabric is confined to the upper 1–2 m of the Kullenberg cores and specific sections of the advanced piston cores, and we attribute it to conical deformation caused by either excessive penetration speeds and downwards dragging of sediment along the edge of the liner or stretching caused by undersampling. By using our data in an example, we present a protocol to accept palaeomagnetic secular variation data that uses (i) a threshold 90-K3 value of 15°, combined with a modelled, locally applicable minimum inclination of 65° and (ii) an A95 cone of confidence based on Fisher statistics applied to virtual geomagnetic pole distributions.
- Published
- 2019
- Full Text
- View/download PDF
27. Capillary Pressure Curve Determination Based on a 2‐D Cross‐Section Analysis Via Fractal Geometry: A Bridge Between 2‐D and 3‐D Pore Structure of Porous Media
- Author
-
Chen, Xiaojun, primary, Yao, Guangqing, additional, Luo, Chengfei, additional, Jiang, Ping, additional, Cai, Jianchao, additional, Zhou, Kun, additional, and Herrero‐Bervera, E., additional
- Published
- 2019
- Full Text
- View/download PDF
28. Magnetic fabric and inferred flow direction of dikes, conesheets and sill swarms, Isle of Skye, Scotland
- Author
-
Herrero-Bervera, E, Walker, G.P.L, Cañon-Tapia, E, and Garcia, M.O
- Published
- 2001
- Full Text
- View/download PDF
29. Northern sites
- Author
-
Früh-Green G., Orcutt B., Green S., Cotterill C., Morgan S., Akizawa N., Bayrakci G., Behrmann J., Boschi C., Brazelton W., Cannat M., Dunkel K., Escartin J., Harris M., Herrero-Bervera E., Hesse K., John B., Lang S., Lilley M., Liu H., Mayhew L., Mccaig A., Menez B., Morono Y., Quéméneur M., Rouméjon S., Sandaruwan Ratnayake A., Schrenk M., Schwarzenbach E., Twing K., Weis D., Whattam S., Williams M., and Zhao R.
- Subjects
Atlantis Fracture Zone ,Mid-Atlantic Ridge ,International Ocean Discovery Program ,Lost City hydrothermal field ,methane ,oceanic core complex ,Expedition 357 ,serpentinization ,Atlantis Massif ,carbon cycling ,contamination tracer testing ,detachment faulting ,carbon sequestration ,IODP ,Site M0074 ,seabed drills ,RD2 ,hydrogen ,RRS James Cook ,MeBo ,deep biosphere ,Site M0070 - Abstract
During Expedition 357, cores were recovered from two sites in the eastern area of Atlantis Massif: Sites M0068 and M0075 (Figure F1; Table T1). Newly acquired multibeam data, combined with pre- existing data sets, were evaluated prior to each site to guide the drill teams with regard to anticipated seabed conditions and slope.
- Published
- 2017
30. Expedition 357 methods
- Author
-
Früh-Green, G.L., Orcutt, B.N., Green, S.L., Cotterill, C., Morgan, S., Akizawa, N., Bayrakci, G., Behrmann, Jan H., Boschi, C., Brazleton, W.J., Cannat, M., Dunkel, K.G., Escartin, J., Harris, M., Herrero-Bervera, E., Hesse, K., John, B.E., Lang, S.Q., Lilley, M.D., Liu, H.-Q., Mayhew, L.E., McCaig, A.M., Menez, B., Morono, Y., Quéméneur, M., Rouméjon, S., Sandaruwan Ratnayake, A., Schrenk, M.O., Schwarzenbach, E.M., Twing, K.I., Weis, D., Whattham, S.A., Williams, M., and Zhao, R.
- Abstract
This chapter documents the primary procedures and methods employed by the operational and scientific groups during the offshore and onshore phases of International Ocean Discovery Program (IODP) Expedition 357. This information concerns only shipboard and Onshore Science Party (OSP) methods described in the site chapters. Methods for postexpedition research conducted on Expedition 357 samples and data will be described in individual scientific contributions. Detailed drilling and engineering operations are described in the Operations section of each site chapter.
- Published
- 2017
31. Expedition 357 summary. Atlantis Massif: Serpentinisation and life
- Author
-
Früh-Green, G.L., Orcutt, B.N., Green, S.L., Cotterill, C., Morgan, S., Akizawa, N., Bayrakci, G., Behrmann, J.-H., Boschi, C., Brazleton, W.J., Cannat, M., Dunkel, K.G., Escartin, J., Harris, M., Herrero-Bervera, E., Hesse, K., John, B.E., Lang, S.Q., Lilley, M.D., Liu, H.-Q., Mayhew, L.E., McCaig, A.M., Menez, B., Morono, Y., Quéméneur, M., Rouméjon, S., Sandaruwan Ratnayake, A., Schrenk, M.O., Schwarzenbach, E.M., Twing, K.I., Weis, D., Whattham, S.A., Williams, M., and Zhao, R.
- Abstract
International Ocean Discovery Program (IODP) Expedition 357 successfully cored an east–west transect across the southern wall of Atlantis Massif on the western flank of the Mid-Atlantic Ridge (MAR) to study the links between serpentinization processes and microbial activity in the shallow subsurface of highly altered ultramafic and mafic sequences that have been uplifted to the seafloor along a major detachment fault zone. The primary goals of this expedition were to (1) examine the role of serpentinization in driving hydrothermal systems, sustaining microbial communities, and sequestering carbon; (2) characterize the tectonomagmatic processes that lead to lithospheric heterogeneities and detachment faulting; and (3) assess how abiotic and biotic processes change with variations in rock type and progressive exposure on the seafloor. To accomplish these objectives, we developed a coring and sampling strategy centered on the use of seabed drills—the first time that such systems have been used in the scientific ocean drilling programs. This technology was chosen in the hope of achieving high recovery of the carbonate cap sequences and intact contact and deformation relationships. The expedition plans also included several engineering developments to assess geochemical parameters during drilling; sample bottom water before, during, and after drilling; supply synthetic tracers during drilling for contamination assessment; acquire in situ electrical resistivity and magnetic susceptibility measurements for assessing fractures, fluid flow, and extent of serpentinization; and seal boreholes to provide opportunities for future experiments. Seventeen holes were drilled at nine sites across Atlantis Massif, with two sites on the eastern end of the southern wall (Sites M0068 and M0075), three sites in the central section of the southern wall north of the Lost City hydrothermal field (Sites M0069, M0072, and M0076), two sites on the western end (Sites M0071 and M0073), and two sites north of the southern wall in the direction of the central dome of the massif and Integrated Ocean Drilling Program Site U1309 (Sites M0070 and M0074). Use of seabed drills enabled collection of more than 57 m of core, with borehole penetration ranging from 1.30 to 16.44 meters below seafloor and core recoveries as high as 74.76% of total penetration. This high level of recovery of shallow mantle sequences is unprecedented in the history of ocean drilling. The cores recovered along the southern wall of Atlantis Massif have highly heterogeneous lithologies, types of alteration, and degrees of deformation. The ultramafic rocks are dominated by harzburgites with intervals of dunite and minor pyroxenite veins, as well as gabbroic rocks occurring as melt impregnations and veins, all of which provide information about early magmatic processes and the magmatic evolution in the southernmost portion of Atlantis Massif. Dolerite dikes and basaltic rocks represent the latest stage of magmatic activity. Overall, the ultramafic rocks recovered during Expedition 357 reveal a high degree of serpentinization, as well as metasomatic talc-amphibole-chlorite overprinting and local rodingitization. Metasomatism postdates an early phase of serpentinization but predates late-stage intrusion and alteration of dolerite dikes and the extrusion of basalt. The intensity of alteration is generally lower in the gabbroic and doleritic rocks. Chilled margins in dolerite intruded into talc-amphibole-chlorite schists are observed at the most eastern Site M0075. Deformation in Expedition 357 cores is variable and dominated by brecciation and formation of localized shear zones; the degree of carbonate veining was lower than anticipated. All types of variably altered and deformed ultramafic and mafic rocks occur as components in sedimentary breccias and as fault scarp rubble. The sedimentary cap rocks include basaltic breccias with a carbonate sand matrix and/or fossiliferous carbonate. Fresh glass on basaltic components was observed in some of the breccias. The expedition also successfully applied new technologies, namely (1) extensively using an in situ sensor package and water sampling system on the seabed drills for evaluating real-time dissolved oxygen and methane, pH, oxidation-reduction potential (ORP), temperature, and conductivity during drilling; (2) deploying a borehole plug system for sealing seabed drill boreholes at four sites to allow access for future sampling; and (3) proving that tracers can be delivered into drilling fluids when using seabed drills. The rock drill sensor packages and water sampling enabled detection of elevated dissolved methane and hydrogen concentrations during and/or after drilling, with “hot spots” of hydrogen observed over Sites M0068–M0072 and methane over Sites M0070–M0072. Shipboard determination of contamination tracer delivery confirmed appropriate sample handling procedures for microbiological and geochemical analyses, which will aid all subsequent microbiological investigations that are part of the science party sampling plans and will verify this new tracer delivery technology for seabed drill rigs. Shipboard investigation of biomass density in select samples revealed relatively low and variable cell densities, and enrichment experiments set up shipboard reveal growth. Thus, we anticipate achieving many of the deep biosphere–related objectives of the expedition through continued scientific investigation in the coming years. Finally, although not an objective of the expedition, we were serendipitously able to generate a high-resolution (20 m per pixel) multibeam bathymetry map across the entire Atlantis Massif and the nearby fracture zone, MAR, and eastern conjugate, taking advantage of weather and operational downtime. This will assist science party members in evaluating and interpreting tectonic and mass-wasting processes at Atlantis Massif.
- Published
- 2017
- Full Text
- View/download PDF
32. Expedition 357 methods. Atlantis Massif: Serpentinisation and life
- Author
-
Früh-Green, G.L., Orcutt, B.N., Green, S.L., Cotterill, C., Morgan, S., Akizawa, N., Bayrakci, G., Behrmann, J.-H., Boschi, C., Brazleton, W.J., Cannat, M., Dunkel, K.G., Escartin, J., Harris, M., Herrero-Bervera, E., Hesse, K., John, B.E., Lang, S.Q., Lilley, M.D., Liu, H.-Q., Mayhew, L.E., McCaig, A.M., Menez, B., Morono, Y., Quéméneur, M., Rouméjon, S., Sandaruwan Ratnayake, A., Schrenk, M.O., Schwarzenbach, E.M., Twing, K.I., Weis, D., Whattham, S.A., Williams, M., and Zhao, R.
- Abstract
This chapter documents the primary procedures and methods employed by the operational and scientific groups during the offshore and onshore phases of International Ocean Discovery Program (IODP) Expedition 357. This information concerns only shipboard and Onshore Science Party (OSP) methods described in the site chapters. Methods for postexpedition research conducted on Expedition 357 samples and data will be described in individual scientific contributions. Detailed drilling and engineering operations are described in the Operations section of each site chapter.
- Published
- 2017
- Full Text
- View/download PDF
33. Western sites. Atlantis Massif: Serpentinisation and life
- Author
-
Früh-Green, G.L., Orcutt, B.N., Green, S.L., Cotterill, C., Morgan, S., Akizawa, N., Bayrakci, G., Behrmann, J.-H., Boschi, C., Brazleton, W.J., Cannat, M., Dunkel, K.G., Escartin, J., Harris, M., Herrero-Bervera, E., Hesse, K., John, B.E., Lang, S.Q., Lilley, M.D., Liu, H.-Q., Mayhew, L.E., McCaig, A.M., Menez, B., Morono, Y., Quéméneur, M., Rouméjon, S., Sandaruwan Ratnayake, A., Schrenk, M.O., Schwarzenbach, E.M., Twing, K.I., Weis, D., Whattham, S.A., Williams, M., and Zhao, R.
- Abstract
International Ocean Discovery Program (IODP) Expedition 357 successfully cored an east–west transect across the southern wall of Atlantis Massif on the western flank of the Mid-Atlantic Ridge (MAR) to study the links between serpentinization processes and microbial activity in the shallow subsurface of highly altered ultramafic and mafic sequences that have been uplifted to the seafloor along a major detachment fault zone. The primary goals of this expedition were to (1) examine the role of serpentinization in driving hydrothermal systems, sustaining microbial communities, and sequestering carbon; (2) characterize the tectonomagmatic processes that lead to lithospheric heterogeneities and detachment faulting; and (3) assess how abiotic and biotic processes change with variations in rock type and progressive exposure on the seafloor. To accomplish these objectives, we developed a coring and sampling strategy centered on the use of seabed drills—the first time that such systems have been used in the scientific ocean drilling programs. This technology was chosen in the hope of achieving high recovery of the carbonate cap sequences and intact contact and deformation relationships. The expedition plans also included several engineering developments to assess geochemical parameters during drilling; sample bottom water before, during, and after drilling; supply synthetic tracers during drilling for contamination assessment; acquire in situ electrical resistivity and magnetic susceptibility measurements for assessing fractures, fluid flow, and extent of serpentinization; and seal boreholes to provide opportunities for future experiments. Seventeen holes were drilled at nine sites across Atlantis Massif, with two sites on the eastern end of the southern wall (Sites M0068 and M0075), three sites in the central section of the southern wall north of the Lost City hydrothermal field (Sites M0069, M0072, and M0076), two sites on the western end (Sites M0071 and M0073), and two sites north of the southern wall in the direction of the central dome of the massif and Integrated Ocean Drilling Program Site U1309 (Sites M0070 and M0074). Use of seabed drills enabled collection of more than 57 m of core, with borehole penetration ranging from 1.30 to 16.44 meters below seafloor and core recoveries as high as 74.76% of total penetration. This high level of recovery of shallow mantle sequences is unprecedented in the history of ocean drilling. The cores recovered along the southern wall of Atlantis Massif have highly heterogeneous lithologies, types of alteration, and degrees of deformation. The ultramafic rocks are dominated by harzburgites with intervals of dunite and minor pyroxenite veins, as well as gabbroic rocks occurring as melt impregnations and veins, all of which provide information about early magmatic processes and the magmatic evolution in the southernmost portion of Atlantis Massif. Dolerite dikes and basaltic rocks represent the latest stage of magmatic activity. Overall, the ultramafic rocks recovered during Expedition 357 reveal a high degree of serpentinization, as well as metasomatic talc-amphibole-chlorite overprinting and local rodingitization. Metasomatism postdates an early phase of serpentinization but predates late-stage intrusion and alteration of dolerite dikes and the extrusion of basalt. The intensity of alteration is generally lower in the gabbroic and doleritic rocks. Chilled margins in dolerite intruded into talc-amphibole-chlorite schists are observed at the most eastern Site M0075. Deformation in Expedition 357 cores is variable and dominated by brecciation and formation of localized shear zones; the degree of carbonate veining was lower than anticipated. All types of variably altered and deformed ultramafic and mafic rocks occur as components in sedimentary breccias and as fault scarp rubble. The sedimentary cap rocks include basaltic breccias with a carbonate sand matrix and/or fossiliferous carbonate. Fresh glass on basaltic components was observed in some of the breccias. The expedition also successfully applied new technologies, namely (1) extensively using an in situ sensor package and water sampling system on the seabed drills for evaluating real-time dissolved oxygen and methane, pH, oxidation-reduction potential (ORP), temperature, and conductivity during drilling; (2) deploying a borehole plug system for sealing seabed drill boreholes at four sites to allow access for future sampling; and (3) proving that tracers can be delivered into drilling fluids when using seabed drills. The rock drill sensor packages and water sampling enabled detection of elevated dissolved methane and hydrogen concentrations during and/or after drilling, with “hot spots” of hydrogen observed over Sites M0068–M0072 and methane over Sites M0070–M0072. Shipboard determination of contamination tracer delivery confirmed appropriate sample handling procedures for microbiological and geochemical analyses, which will aid all subsequent microbiological investigations that are part of the science party sampling plans and will verify this new tracer delivery technology for seabed drill rigs. Shipboard investigation of biomass density in select samples revealed relatively low and variable cell densities, and enrichment experiments set up shipboard reveal growth. Thus, we anticipate achieving many of the deep biosphere–related objectives of the expedition through continued scientific investigation in the coming years. Finally, although not an objective of the expedition, we were serendipitously able to generate a high-resolution (20 m per pixel) multibeam bathymetry map across the entire Atlantis Massif and the nearby fracture zone, MAR, and eastern conjugate, taking advantage of weather and operational downtime. This will assist science party members in evaluating and interpreting tectonic and mass-wasting processes at Atlantis Massif.
- Published
- 2017
- Full Text
- View/download PDF
34. Eastern sites. Atlantis Massif: Serpentinisation and life
- Author
-
Früh-Green, G.L., Orcutt, B.N., Green, S.L., Cotterill, C., Morgan, S., Akizawa, N., Bayrakci, G., Behrmann, J.-H., Boschi, C., Brazleton, W.J., Cannat, M., Dunkel, K.G., Escartin, J., Harris, M., Herrero-Bervera, E., Hesse, K., John, B.E., Lang, S.Q., Lilley, M.D., Liu, H.-Q., Mayhew, L.E., McCaig, A.M., Menez, B., Morono, Y., Quéméneur, M., Rouméjon, S., Sandaruwan Ratnayake, A., Schrenk, M.O., Schwarzenbach, E.M., Twing, K.I., Weis, D., Whattham, S.A., Williams, M., and Zhao, R.
- Abstract
International Ocean Discovery Program (IODP) Expedition 357 successfully cored an east–west transect across the southern wall of Atlantis Massif on the western flank of the Mid-Atlantic Ridge (MAR) to study the links between serpentinization processes and microbial activity in the shallow subsurface of highly altered ultramafic and mafic sequences that have been uplifted to the seafloor along a major detachment fault zone. The primary goals of this expedition were to (1) examine the role of serpentinization in driving hydrothermal systems, sustaining microbial communities, and sequestering carbon; (2) characterize the tectonomagmatic processes that lead to lithospheric heterogeneities and detachment faulting; and (3) assess how abiotic and biotic processes change with variations in rock type and progressive exposure on the seafloor. To accomplish these objectives, we developed a coring and sampling strategy centered on the use of seabed drills—the first time that such systems have been used in the scientific ocean drilling programs. This technology was chosen in the hope of achieving high recovery of the carbonate cap sequences and intact contact and deformation relationships. The expedition plans also included several engineering developments to assess geochemical parameters during drilling; sample bottom water before, during, and after drilling; supply synthetic tracers during drilling for contamination assessment; acquire in situ electrical resistivity and magnetic susceptibility measurements for assessing fractures, fluid flow, and extent of serpentinization; and seal boreholes to provide opportunities for future experiments. Seventeen holes were drilled at nine sites across Atlantis Massif, with two sites on the eastern end of the southern wall (Sites M0068 and M0075), three sites in the central section of the southern wall north of the Lost City hydrothermal field (Sites M0069, M0072, and M0076), two sites on the western end (Sites M0071 and M0073), and two sites north of the southern wall in the direction of the central dome of the massif and Integrated Ocean Drilling Program Site U1309 (Sites M0070 and M0074). Use of seabed drills enabled collection of more than 57 m of core, with borehole penetration ranging from 1.30 to 16.44 meters below seafloor and core recoveries as high as 74.76% of total penetration. This high level of recovery of shallow mantle sequences is unprecedented in the history of ocean drilling. The cores recovered along the southern wall of Atlantis Massif have highly heterogeneous lithologies, types of alteration, and degrees of deformation. The ultramafic rocks are dominated by harzburgites with intervals of dunite and minor pyroxenite veins, as well as gabbroic rocks occurring as melt impregnations and veins, all of which provide information about early magmatic processes and the magmatic evolution in the southernmost portion of Atlantis Massif. Dolerite dikes and basaltic rocks represent the latest stage of magmatic activity. Overall, the ultramafic rocks recovered during Expedition 357 reveal a high degree of serpentinization, as well as metasomatic talc-amphibole-chlorite overprinting and local rodingitization. Metasomatism postdates an early phase of serpentinization but predates late-stage intrusion and alteration of dolerite dikes and the extrusion of basalt. The intensity of alteration is generally lower in the gabbroic and doleritic rocks. Chilled margins in dolerite intruded into talc-amphibole-chlorite schists are observed at the most eastern Site M0075. Deformation in Expedition 357 cores is variable and dominated by brecciation and formation of localized shear zones; the degree of carbonate veining was lower than anticipated. All types of variably altered and deformed ultramafic and mafic rocks occur as components in sedimentary breccias and as fault scarp rubble. The sedimentary cap rocks include basaltic breccias with a carbonate sand matrix and/or fossiliferous carbonate. Fresh glass on basaltic components was observed in some of the breccias. The expedition also successfully applied new technologies, namely (1) extensively using an in situ sensor package and water sampling system on the seabed drills for evaluating real-time dissolved oxygen and methane, pH, oxidation-reduction potential (ORP), temperature, and conductivity during drilling; (2) deploying a borehole plug system for sealing seabed drill boreholes at four sites to allow access for future sampling; and (3) proving that tracers can be delivered into drilling fluids when using seabed drills. The rock drill sensor packages and water sampling enabled detection of elevated dissolved methane and hydrogen concentrations during and/or after drilling, with “hot spots” of hydrogen observed over Sites M0068–M0072 and methane over Sites M0070–M0072. Shipboard determination of contamination tracer delivery confirmed appropriate sample handling procedures for microbiological and geochemical analyses, which will aid all subsequent microbiological investigations that are part of the science party sampling plans and will verify this new tracer delivery technology for seabed drill rigs. Shipboard investigation of biomass density in select samples revealed relatively low and variable cell densities, and enrichment experiments set up shipboard reveal growth. Thus, we anticipate achieving many of the deep biosphere–related objectives of the expedition through continued scientific investigation in the coming years. Finally, although not an objective of the expedition, we were serendipitously able to generate a high-resolution (20 m per pixel) multibeam bathymetry map across the entire Atlantis Massif and the nearby fracture zone, MAR, and eastern conjugate, taking advantage of weather and operational downtime. This will assist science party members in evaluating and interpreting tectonic and mass-wasting processes at Atlantis Massif.
- Published
- 2017
- Full Text
- View/download PDF
35. Central sites. Atlantis Massif: Serpentinisation and life
- Author
-
Früh-Green, G.L., Orcutt, B.N., Green, S.L., Cotterill, C., Morgan, S., Akizawa, N., Bayrakci, G., Behrmann, J.-H., Boschi, C., Brazleton, W.J., Cannat, M., Dunkel, K.G., Escartin, J., Harris, M., Herrero-Bervera, E., Hesse, K., John, B.E., Lang, S.Q., Lilley, M.D., Liu, H.-Q., Mayhew, L.E., McCaig, A.M., Menez, B., Morono, Y., Quéméneur, M., Rouméjon, S., Sandaruwan Ratnayake, A., Schrenk, M.O., Schwarzenbach, E.M., Twing, K.I., Weis, D., Whattham, S.A., Williams, M., and Zhao, R.
- Abstract
International Ocean Discovery Program (IODP) Expedition 357 successfully cored an east–west transect across the southern wall of Atlantis Massif on the western flank of the Mid-Atlantic Ridge (MAR) to study the links between serpentinization processes and microbial activity in the shallow subsurface of highly altered ultramafic and mafic sequences that have been uplifted to the seafloor along a major detachment fault zone. The primary goals of this expedition were to (1) examine the role of serpentinization in driving hydrothermal systems, sustaining microbial communities, and sequestering carbon; (2) characterize the tectonomagmatic processes that lead to lithospheric heterogeneities and detachment faulting; and (3) assess how abiotic and biotic processes change with variations in rock type and progressive exposure on the seafloor. To accomplish these objectives, we developed a coring and sampling strategy centered on the use of seabed drills—the first time that such systems have been used in the scientific ocean drilling programs. This technology was chosen in the hope of achieving high recovery of the carbonate cap sequences and intact contact and deformation relationships. The expedition plans also included several engineering developments to assess geochemical parameters during drilling; sample bottom water before, during, and after drilling; supply synthetic tracers during drilling for contamination assessment; acquire in situ electrical resistivity and magnetic susceptibility measurements for assessing fractures, fluid flow, and extent of serpentinization; and seal boreholes to provide opportunities for future experiments. Seventeen holes were drilled at nine sites across Atlantis Massif, with two sites on the eastern end of the southern wall (Sites M0068 and M0075), three sites in the central section of the southern wall north of the Lost City hydrothermal field (Sites M0069, M0072, and M0076), two sites on the western end (Sites M0071 and M0073), and two sites north of the southern wall in the direction of the central dome of the massif and Integrated Ocean Drilling Program Site U1309 (Sites M0070 and M0074). Use of seabed drills enabled collection of more than 57 m of core, with borehole penetration ranging from 1.30 to 16.44 meters below seafloor and core recoveries as high as 74.76% of total penetration. This high level of recovery of shallow mantle sequences is unprecedented in the history of ocean drilling. The cores recovered along the southern wall of Atlantis Massif have highly heterogeneous lithologies, types of alteration, and degrees of deformation. The ultramafic rocks are dominated by harzburgites with intervals of dunite and minor pyroxenite veins, as well as gabbroic rocks occurring as melt impregnations and veins, all of which provide information about early magmatic processes and the magmatic evolution in the southernmost portion of Atlantis Massif. Dolerite dikes and basaltic rocks represent the latest stage of magmatic activity. Overall, the ultramafic rocks recovered during Expedition 357 reveal a high degree of serpentinization, as well as metasomatic talc-amphibole-chlorite overprinting and local rodingitization. Metasomatism postdates an early phase of serpentinization but predates late-stage intrusion and alteration of dolerite dikes and the extrusion of basalt. The intensity of alteration is generally lower in the gabbroic and doleritic rocks. Chilled margins in dolerite intruded into talc-amphibole-chlorite schists are observed at the most eastern Site M0075. Deformation in Expedition 357 cores is variable and dominated by brecciation and formation of localized shear zones; the degree of carbonate veining was lower than anticipated. All types of variably altered and deformed ultramafic and mafic rocks occur as components in sedimentary breccias and as fault scarp rubble. The sedimentary cap rocks include basaltic breccias with a carbonate sand matrix and/or fossiliferous carbonate. Fresh glass on basaltic components was observed in some of the breccias. The expedition also successfully applied new technologies, namely (1) extensively using an in situ sensor package and water sampling system on the seabed drills for evaluating real-time dissolved oxygen and methane, pH, oxidation-reduction potential (ORP), temperature, and conductivity during drilling; (2) deploying a borehole plug system for sealing seabed drill boreholes at four sites to allow access for future sampling; and (3) proving that tracers can be delivered into drilling fluids when using seabed drills. The rock drill sensor packages and water sampling enabled detection of elevated dissolved methane and hydrogen concentrations during and/or after drilling, with “hot spots” of hydrogen observed over Sites M0068–M0072 and methane over Sites M0070–M0072. Shipboard determination of contamination tracer delivery confirmed appropriate sample handling procedures for microbiological and geochemical analyses, which will aid all subsequent microbiological investigations that are part of the science party sampling plans and will verify this new tracer delivery technology for seabed drill rigs. Shipboard investigation of biomass density in select samples revealed relatively low and variable cell densities, and enrichment experiments set up shipboard reveal growth. Thus, we anticipate achieving many of the deep biosphere–related objectives of the expedition through continued scientific investigation in the coming years. Finally, although not an objective of the expedition, we were serendipitously able to generate a high-resolution (20 m per pixel) multibeam bathymetry map across the entire Atlantis Massif and the nearby fracture zone, MAR, and eastern conjugate, taking advantage of weather and operational downtime. This will assist science party members in evaluating and interpreting tectonic and mass-wasting processes at Atlantis Massif.
- Published
- 2017
- Full Text
- View/download PDF
36. Paleomagnetic study of the ages of lavas on the island of Lanai'i, Hawai'i
- Author
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Herrero-Bervera, E., Margas-Viñuela, J., and Valet, J.-P.
- Published
- 2000
- Full Text
- View/download PDF
37. Geomagnetic field secular variation in Pacific Ocean: A Bayesian reference curve based on Holocene Hawaiian lava flows
- Author
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Tema, E., primary, Herrero-Bervera, E., additional, and Lanos, Ph., additional
- Published
- 2017
- Full Text
- View/download PDF
38. Northern sites. Atlantis Massif: Serpentinisation and life
- Author
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Früh-Green, G.L., Orcutt, B.N., Green, S.L., Cotterill, C., Morgan, S., Akizawa, N., Bayrakci, G., Behrmann, J.-H., Boschi, C., Brazleton, W.J., Cannat, M., Dunkel, K.G., Escartin, J., Harris, M., Herrero-Bervera, E., Hesse, K., John, B.E., Lang, S.Q., Lilley, M.D., Liu, H.-Q., Mayhew, L.E., McCaig, A.M., Menez, B., Morono, Y., Quéméneur, M., Rouméjon, S., Sandaruwan Ratnayake, A., Schrenk, M.O., Schwarzenbach, E.M., Twing, K.I., Weis, D., Whattham, S.A., Williams, M., Zhao, R., Früh-Green, G.L., Orcutt, B.N., Green, S.L., Cotterill, C., Morgan, S., Akizawa, N., Bayrakci, G., Behrmann, J.-H., Boschi, C., Brazleton, W.J., Cannat, M., Dunkel, K.G., Escartin, J., Harris, M., Herrero-Bervera, E., Hesse, K., John, B.E., Lang, S.Q., Lilley, M.D., Liu, H.-Q., Mayhew, L.E., McCaig, A.M., Menez, B., Morono, Y., Quéméneur, M., Rouméjon, S., Sandaruwan Ratnayake, A., Schrenk, M.O., Schwarzenbach, E.M., Twing, K.I., Weis, D., Whattham, S.A., Williams, M., and Zhao, R.
- Abstract
International Ocean Discovery Program (IODP) Expedition 357 successfully cored an east–west transect across the southern wall of Atlantis Massif on the western flank of the Mid-Atlantic Ridge (MAR) to study the links between serpentinization processes and microbial activity in the shallow subsurface of highly altered ultramafic and mafic sequences that have been uplifted to the seafloor along a major detachment fault zone. The primary goals of this expedition were to (1) examine the role of serpentinization in driving hydrothermal systems, sustaining microbial communities, and sequestering carbon; (2) characterize the tectonomagmatic processes that lead to lithospheric heterogeneities and detachment faulting; and (3) assess how abiotic and biotic processes change with variations in rock type and progressive exposure on the seafloor. To accomplish these objectives, we developed a coring and sampling strategy centered on the use of seabed drills—the first time that such systems have been used in the scientific ocean drilling programs. This technology was chosen in the hope of achieving high recovery of the carbonate cap sequences and intact contact and deformation relationships. The expedition plans also included several engineering developments to assess geochemical parameters during drilling; sample bottom water before, during, and after drilling; supply synthetic tracers during drilling for contamination assessment; acquire in situ electrical resistivity and magnetic susceptibility measurements for assessing fractures, fluid flow, and extent of serpentinization; and seal boreholes to provide opportunities for future experiments. Seventeen holes were drilled at nine sites across Atlantis Massif, with two sites on the eastern end of the southern wall (Sites M0068 and M0075), three sites in the central section of the southern wall north of the Lost City hydrothermal field (Sites M0069, M0072, and M0076), two sites on the western end (Sites M0071 and M0073), and two si
- Published
- 2017
39. Expedition 357 summary
- Author
-
Früh-Green, G. L., Orcutt, B. N., Green, S. L., Cotterill, C., Morgan, S., Akizawa, N., Bayrakci, G., Behrmann, Jan H., Boschi, C., Brazleton, W. J., Cannat, M., Dunkel, K. G., Escartin, J., Harris, M., Herrero-Bervera, E., Hesse, K., John, B. E., Lang, S. Q., Lilley, M. D., Liu, H.-Q., Mayhew, L. E., McCaig, A. M., Menez, B., Morono, Y., Quéméneur, M., Rouméjon, S., Sandaruwan Ratnayake, A., Schrenk, M. O., Schwarzenbach, E. M., Twing, K. I., Weis, D., Whattham, S. A., Williams, M., Zhao, R., Früh-Green, G. L., Orcutt, B. N., Green, S. L., Cotterill, C., Morgan, S., Akizawa, N., Bayrakci, G., Behrmann, Jan H., Boschi, C., Brazleton, W. J., Cannat, M., Dunkel, K. G., Escartin, J., Harris, M., Herrero-Bervera, E., Hesse, K., John, B. E., Lang, S. Q., Lilley, M. D., Liu, H.-Q., Mayhew, L. E., McCaig, A. M., Menez, B., Morono, Y., Quéméneur, M., Rouméjon, S., Sandaruwan Ratnayake, A., Schrenk, M. O., Schwarzenbach, E. M., Twing, K. I., Weis, D., Whattham, S. A., Williams, M., and Zhao, R.
- Abstract
International Ocean Discovery Program (IODP) Expedition 357 successfully cored an east–west transect across the southern wall of Atlantis Massif on the western flank of the Mid-Atlantic Ridge (MAR) to study the links between serpentinization processes and microbial activity in the shallow subsurface of highly altered ultra- mafic and mafic sequences that have been uplifted to the seafloor along a major detachment fault zone. The primary goals of this ex- pedition were to (1) examine the role of serpentinization in driving hydrothermal systems, sustaining microbial communities, and se- questering carbon; (2) characterize the tectonomagmatic processes that lead to lithospheric heterogeneities and detachment faulting; and (3) assess how abiotic and biotic processes change with varia- tions in rock type and progressive exposure on the seafloor. To ac- complish these objectives, we developed a coring and sampling strategy centered on the use of seabed drills—the first time that such systems have been used in the scientific ocean drilling pro- grams. This technology was chosen in the hope of achieving high recovery of the carbonate cap sequences and intact contact and de- formation relationships. The expedition plans also included several engineering developments to assess geochemical parameters during drilling; sample bottom water before, during, and after drilling; sup- ply synthetic tracers during drilling for contamination assessment; acquire in situ electrical resistivity and magnetic susceptibility mea- surements for assessing fractures, fluid flow, and extent of ser- pentinization; and seal boreholes to provide opportunities for future experiments. (...)
- Published
- 2017
- Full Text
- View/download PDF
40. Eastern sites
- Author
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Früh-Green, G.L., Orcutt, B.N., Green, S.L., Cotterill, C., Morgan, S., Akizawa, N., Bayrakci, G., Behrmann, Jan H., Boschi, C., Brazleton, W.J., Cannat, M., Dunkel, K.G., Escartin, J., Harris, M., Herrero-Bervera, E., Hesse, K., John, B.E., Lang, S.Q., Lilley, M.D., Liu, H.-Q., Mayhew, L.E., McCaig, A.M., Menez, B., Morono, Y., Quéméneur, M., Rouméjon, S., Sandaruwan Ratnayake, A., Schrenk, M.O., Schwarzenbach, E.M., Twing, K.I., Weis, D., Whattham, S.A., Williams, M., Zhao, R., Früh-Green, G.L., Orcutt, B.N., Green, S.L., Cotterill, C., Morgan, S., Akizawa, N., Bayrakci, G., Behrmann, Jan H., Boschi, C., Brazleton, W.J., Cannat, M., Dunkel, K.G., Escartin, J., Harris, M., Herrero-Bervera, E., Hesse, K., John, B.E., Lang, S.Q., Lilley, M.D., Liu, H.-Q., Mayhew, L.E., McCaig, A.M., Menez, B., Morono, Y., Quéméneur, M., Rouméjon, S., Sandaruwan Ratnayake, A., Schrenk, M.O., Schwarzenbach, E.M., Twing, K.I., Weis, D., Whattham, S.A., Williams, M., and Zhao, R.
- Published
- 2017
- Full Text
- View/download PDF
41. Geomagnetic field Secular Variation in Pacific Ocean: A first Bayesian reference curve based on Hawaiian Lava Flows
- Author
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Tema, Evdokia, Herrero Bervera, E., and Lanos, P. h.
- Subjects
Secular Variation ,Bayesian modeling ,Lava flows ,Hawaii - Published
- 2016
42. High amplitude geomagnetic field variations registered by historical and radiocarbon dated Hawaiian Lavas: A contribution on the question of the Pacific non-dipole low
- Author
-
Tema, E., Herrero-Bervera, E., Lanos, Philippe, Université, Bordeaux Montaigne, Dipartimento di Scienze della Terra [Torino], Università degli studi di Torino (UNITO), ALP, Alpine Laboratory of Paleomagnetism, Géosciences Rennes (GR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Centre National de la Recherche Scientifique (CNRS), IRAMAT-Centre de recherche en physique appliquée à l’archéologie (IRAMAT-CRP2A), Institut de Recherches sur les Archéomatériaux (IRAMAT), Université de Technologie de Belfort-Montbeliard (UTBM)-Université d'Orléans (UO)-Université Bordeaux Montaigne-Centre National de la Recherche Scientifique (CNRS)-Université de Technologie de Belfort-Montbeliard (UTBM)-Université d'Orléans (UO)-Université Bordeaux Montaigne-Centre National de la Recherche Scientifique (CNRS), Università degli studi di Torino = University of Turin (UNITO), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS), Université de Technologie de Belfort-Montbeliard (UTBM)-Université d'Orléans (UO)-Université Bordeaux Montaigne (UBM)-Centre National de la Recherche Scientifique (CNRS)-Université de Technologie de Belfort-Montbeliard (UTBM)-Université d'Orléans (UO)-Université Bordeaux Montaigne (UBM)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), and Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Université Bordeaux Montaigne-Université de Technologie de Belfort-Montbeliard (UTBM)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Université Bordeaux Montaigne-Université de Technologie de Belfort-Montbeliard (UTBM)
- Subjects
[SHS.ARCHEO] Humanities and Social Sciences/Archaeology and Prehistory ,[SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory ,ComputingMilieux_MISCELLANEOUS - Abstract
International audience
- Published
- 2016
43. Improving our knowledge of the geomagnetic field intensity in South America: New archaeointensity data from potsherds derived from three archaeological sites in Ecuador
- Author
-
Herrero Bervera, E., Tema, Evdokia, and Athens, S.
- Published
- 2015
44. Archaeointensity determination of the Earth's magnetic field in coastal Ecuador during the last six millennia: New data from Ecuadorian Potsherds
- Author
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Herrero Bervera, E., Tema, Evdokia, and Athens, S.
- Published
- 2015
45. Full vector geomagnetic field variation during the Holocene registered by Hawaiian lava flows
- Author
-
Tema, Evdokia and Herrero Bervera, E.
- Published
- 2015
46. Rapid regional perturbations to the recent global geomagnetic decay revealed by a new Hawaiian record
- Author
-
de Groot, L.V., Biggin, A.J., Dekkers, M.J., Langereis, C.G., Herrero-Bervera, E., NWO-ALW Open: A new approach for determining the absolute paleointensity of the Earth's magnetic field: Inclination error and anisotropy or ARM in red beds from the Lodève Basin (Southern France), and Paleomagnetism
- Subjects
Earth sciences ,Geology and geophysics ,Planetary sciences - Abstract
The dominant dipolar component of the Earth’s magnetic field has been steadily weakening for at least the last 170 years. Prior to these direct measurements, archaeomagnetic records show short periods of significantly elevated geomagnetic intensity. These striking phenomena are not captured by current field models and their relationship to the recent dipole decay is highly unclear. Here we apply a novel multi-method archaeomagnetic approach to produce a new high-quality record of geomagnetic intensity variations for Hawaii, a crucial locality in the central Pacific. It reveals a short period of high intensity occurring ~1,000 years ago, qualitatively similar to behaviour observed 200 years earlier in Europe and 500 years later in Mesoamerica. We combine these records with one from Japan to produce a coherent picture that includes the dipole decaying steadily over the last millennium. Strong, regional, short-term intensity perturbations are superimposed on this global trend; their asynchronicity necessitates a highly non-dipolar nature.
- Published
- 2013
47. IODP Expeditions 309 and 312 drill and intact section of upper oceanic basement into gabbros
- Author
-
Alt, J. C., Teagle, D. A. H., Umino, S., Miyashita, S., Banerjee, N. R., Wilson, D. S., Acton, G. D., Anma, R., Barr, S. R., Belghoul, A., Carlut, J., Christie, D. M., Coggon, R. M., Cooper, K. M., Cordier, C., Crispini, L., Durand, S. R., Einaudi, F., Galli, L., Gao, Y., Geldmacher, J., Gilbert, L. A., Hayman, N. W., Herrero-Bervera, E., Hirano, N., Holter, S., Ingle, S., Jiang, S., Kalberkamp, U., Kerneklian, M., Koepke, J., Laverne, Ch., Lledo, Vasquez, Maclennan, H. L., Morgan, J., Neo, S., Nichols, H. J., Park, S. H., Reichow, M. K., Sakuyama, T., Sano, T., Sandwell, R., Scheibner, B., Smith-Duque, Ch. E., Swift, S. A., Tartarotti, P., Tikku, A. A., Tominaga, M., Veloso, E. A., Yamasaki, T., Yamazaki, S., and Ziegler, Ch.
- Published
- 2007
48. Drilling to gabbro in intact ocean crust formed at the East Pacific Rise
- Author
-
Wilson, D. S., Teagle, D. A. H., Alt, J. C., Banerjee, N. R., Umino, S., Miyashita, S., Acton, G. D., Anma, R., Barr, S. R., Belghoul, A., Carlut, J., Christie, D. M., Coggon, R. M., Cooper, K. M., Cordier, C., Crispini, Laura, RODRIGUEZ DURAND, S., Einaudi, F., Galli, L., Gao, Y. J., Geldmacher, J., Gilbert, L. A., Hayman, N. W., HERRERO BERVERA, E., Hirano, N., Holter, S., Ingle, S., Jiang, S. J., Kalberkamp, U., Kerneklian, M., Koepke, J., Laverne, C., Vasquez, H. L. L., Maclennan, J., Morgan, S., Neo, N., Nichols, H. J., Park, S. H., Reichow, M. K., Sakuyama, T., Sano, T., Sandwell, R., Scheibner, B., SMITH DUQUE, C. E., Swift, S. A., Tartarotti, P., Tikku, A. A., Tominaga, M., Veloso, E. A., Yamasaki, T., Yamazaki, S., and Ziegler, C.
- Subjects
Ocean Crust ,Mid-ocean ridges - Published
- 2006
49. Caracterización geomagnética del sistema cónico de diques traquíticos de Tejeda (Gran Canaria)
- Author
-
Quintana Uribe, Aitor, Mangas, J., and Herrero Bervera, E.
- Subjects
2506 Geología - Abstract
[ES] En la cuenca de Tejeda (Gran Canaria) existe un sistema cónico de más de 500 diques de composición traquítica y fonolítica. La investigación se ha centrado en el estudio de las características geológicas y magnéticas de siete diques traquíticos (con texturas afaníticas y porfídicas) representativos del sistema cónico. El estudio de la "anisotropía de la susceptibilidad magnética" (ASM) en 84 cilindros de roca confirma que: 1) es una propiedad magnética medible en este tipo de materiales sálicos, 2) el flujo de magma traquítico no fue homogéneo en el conducto de cada dique, ni existe una tendencia cónica de los planos de flujo de magma en los diques estudiados hacia una cámara magmática profunda
- Published
- 2004
50. Rapid regional perturbations to the recent global geomagnetic decay revealed by a new Hawaiian record
- Author
-
NWO-ALW Open: A new approach for determining the absolute paleointensity of the Earth's magnetic field: Inclination error and anisotropy or ARM in red beds from the Lodève Basin (Southern France), Paleomagnetism, de Groot, L.V., Biggin, A.J., Dekkers, M.J., Langereis, C.G., Herrero-Bervera, E., NWO-ALW Open: A new approach for determining the absolute paleointensity of the Earth's magnetic field: Inclination error and anisotropy or ARM in red beds from the Lodève Basin (Southern France), Paleomagnetism, de Groot, L.V., Biggin, A.J., Dekkers, M.J., Langereis, C.G., and Herrero-Bervera, E.
- Published
- 2013
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