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10 results on '"Bralower, Timothy J."'

5. Cretaceous Extinctions: Evidence Overlooked [with Response]

Author

KELLER, GERTA, ADATTE, THIERRY, PARDO, ALFONSO, BAJPAI, SUNIL, KHOSLA, ASHU, SAMANT, BANDANA, SCHULTE, PETER, ALEGRET, LAIA, ARENILLAS, IGNACIO, ARZ, JOSÉ A., BARTON, PENNY J., BOWN, PAUL R., BRALOWER, TIMOTHY J., CHRISTESON, GAIL L., CLAEYS, PHILIPPE, COCKELL, CHARLES S., COLLINS, GARETH S., DEUTSCH, ALEXANDER, GOLDIN, TAMARA J., GOTO, KAZUHISA, GRAJALES-NISHIMURA, JOSÉ M., GRIEVE, RICHARD A. F., GULICK, SEAN P. S., JOHNSON, KIRK R., KIESSLING, WOLFGANG, KOEBERL, CHRISTIAN, KRING, DAVID A., MACLEOD, KENNETH G., MATSUI, TAKAFUMI, MELOSH, JAY, MONTANARI, ALESSANDRO, MORGAN, JOANNA V., NEAL, CUVE R., NORRIS, RICHARD D., PIERAZZO, ELISABETTA, RAVIZZA, GREG, REBOLLEDO-VIEYRA, MARIO, REIMOLD, WOLF UWE, ROBIN, ERIC, SALGE, TOBIAS, SPEIJER, ROBERT P., SWEET, ARTHUR R., URRUTIA-FUCUGAUCHI, JAIME, VAJDA, VIVI, WHALEN, MICHAEL T., and WILLUMSEN, PI S.

Published
2010

6. The Chicxulub Asteroid Impact and Mass Extinction at the Cretaceous-Paleogene Boundary

Author

Schulte, Peter, Alegret, Laia, Arenillas, Ignacio, Arz, José A., Barton, Penny J., Bown, Paul R., Bralower, Timothy J., Christeson, Gail L., Claeys, Philippe, Cockell, Charles S., Collins, Gareth S., Deutsch, Alexander, Goldin, Tamara J., Goto, Kazuhisa, Grajales-Nishimura, José M., Grieve, Richard Á. F., Gulick, Sean P. S., Johnson, Kirk R., Kiessling, Wolfgang, Koeberl, Christian, Kring, David A., MacLeod, Kenneth G., Matsui, Takafumi, Melosh, Jay, Montanari, Alessandro, Morgan, Joanna V., Neal, Clive R., Nichols, Douglas J., Norris, Richard D., Pierazzo, Elisabetta, Ravizza, Greg, Rebolledo-Vieyra, Mario, Reimold, Wolf Uwe, Robin, Eric, Salge, Tobias, Speijer, Robert P., Sweet, Arthur R., Urrutia-Fucugauchi, Jaime, Vajda, Vivi, Whalen, Michael T., and Willumsen, Pi S.

Published
2010
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8. Rock fluidization during peak-ring formation of large impact structures

Author

Riller, Ulrich, Poelchau, Michael H., Rae, Auriol S. P., Schulte, Felix M., Collins, Gareth S., Melosh, H. Jay, Grieve, Richard A. F., Morgan, Joanna V., Gulick, Sean P. S., Lofi, Johanna, Diaw, Abdoulaye, McCall, Naoma, Kring, David A., Green, Sophie L., Chenot, Elise, Christeson, Gail L., Claeys, Philippe, Cockell, Charles S., Coolen, Marco J. L., Ferrière, Ludovic, Gebhardt, Catalina, Goto, Kazuhisa, Jones, Heather, Long, Xiao, Lowery, Christopher M., Ocampo-Torres, Rubén, Pérez-Cruz, Ligia, Pickersgill, Annemarie E., Rasmussen, Cornelia, Rebolledo-Vieyra, Mario, Sato, Honami, Smit, Jan, Tikoo-Schantz, Sonia M., Tomioka, Naotaka, Whalen, Michael T., Wittmann, Axel, Yamaguchi, Kosei E., Fucugauchi, Jaime Urrutia, Bralower, Timothy J., IODP–ICDP Expedition 364 Science Party, Institut für Geologie, Universität Hamburg (UHH), Department of Geology, University of Freiburg [Freiburg], Department of Earth Science and Engineering [Imperial College London], Imperial College London, Department of Earth, Atmospheric, and Planetary Sciences [West Lafayette] (EAPS), Purdue University [West Lafayette], Centre for Planetary Science and Exploration [London, ON] (CPSX), University of Western Ontario (UWO), Institute of Geophysics [Austin] (IG), University of Texas at Austin [Austin], Department of Geological Sciences [Austin], Jackson School of Geosciences (JSG), University of Texas at Austin [Austin]-University of Texas at Austin [Austin], Géosciences Montpellier, Institut national des sciences de l'Univers (INSU - CNRS)-Université de Montpellier (UM)-Université des Antilles (UA)-Centre National de la Recherche Scientifique (CNRS), Universities Space Research Association (USRA), British Geological Survey [Edinburgh], British Geological Survey (BGS), Biogéosciences [UMR 6282] [Dijon] (BGS), Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Centre National de la Recherche Scientifique (CNRS), Analytical, Environmental and Geo- Chemistry, Vrije Universiteit Brussel (VUB), SUPA School of Physics and Astronomy [Edinburgh], University of Edinburgh, WA-Organic and Isotope Geochemistry Centre (WA-OIGC), The Institute for Geoscience Research [Perth] (TIGeR), School of Earth and Planetary Science [Perth - Curtin university], Curtin University [Perth], Planning and Transport Research Centre (PATREC)-Planning and Transport Research Centre (PATREC)-Curtin University [Perth], Planning and Transport Research Centre (PATREC)-Planning and Transport Research Centre (PATREC)-School of Earth and Planetary Science [Perth - Curtin university], Planning and Transport Research Centre (PATREC)-Planning and Transport Research Centre (PATREC), Natural History Museum [Vienna] (NHM), Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung (AWI), International Research Institute of Disaster Science, Tohoku University [Sendai], Pennsylvania State University (Penn State), Penn State System, China University of Geosciences [Beijing], Institut de chimie et procédés pour l'énergie, l'environnement et la santé (ICPEES), Université de Strasbourg (UNISTRA)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Instituto de Geofisica [Mexico], Universidad Nacional Autónoma de México (UNAM), School of Geographical and Earth Sciences, University of Glasgow, NERC Argon Isotope Facility [Glasgow], Scottish Universities Environmental Research Centre (SUERC), University of Glasgow-University of Edinburgh-University of Glasgow-University of Edinburgh-Natural Environment Research Council (NERC), Unidad de Ciencias del Agua, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Faculty of Earth and Life Sciences [Amsterdam] (FALW), Vrije Universiteit Amsterdam [Amsterdam] (VU), Department of Earth and Planetary Sciences [Piscataway], Rutgers, The State University of New Jersey [New Brunswick] (RU), Rutgers University System (Rutgers)-Rutgers University System (Rutgers), Kochi Institute for Core Sample Research, Department of Geosciences, University of Alaska [Fairbanks] (UAF), Eyring Materials Center, Arizona State University [Tempe] (ASU), Department of Chemistry, Toho University, NASA Astrobiology Institute (NAI), Work supported by the Priority Programs 527 and 1006 of the German Science Foundation (grants Ri 916/16-1 and PO 1815/2-1), National Science Foundation grants (OCE-1737351, OCE-1450528 and OCE-1736826), and Natural Environment Research Council (grants NE/P011195/1 and NE/P005217/1), by the European Consortium for Ocean Research Drilling (ECORD) and the IODP as Expedition 364 with co-funding from the ICDP., Science and Technology Facilities Council (STFC), Natural Environment Research Council (NERC), Analytical, Environmental & Geo-Chemistry, Earth System Sciences, and Chemistry

Subjects
Solar System, 010504 meteorology & atmospheric sciences, ACOUSTIC FLUIDIZATION, General Science & Technology, Flow (psychology), [SDU.STU]Sciences of the Universe [physics]/Earth Sciences, Deformation (meteorology), 010502 geochemistry & geophysics, 01 natural sciences, Brittleness, DEFORMATION, Fluidization, Impact structure, Petrology, COLLAPSE, IODP–ICDP Expedition 364 Science Party, 0105 earth and related environmental sciences, Multidisciplinary, Science & Technology, EXAMPLE, Drilling, SIMULATIONS, CHICXULUB CRATER, Multidisciplinary Sciences, TARGET, Meteorite, SUDBURY, general, ASYMMETRY, Science & Technology - Other Topics, VREDEFORT, Geology
Abstract

8 pages; International audience; Large meteorite impact structures on the terrestrial bodies of the Solar System contain pronounced topographic rings, which emerged from uplifted target (crustal) rocks within minutes of impact. To flow rapidly over large distances, these target rocks must have weakened drastically, but they subsequently regained sufficient strength to build and sustain topographic rings. The mechanisms of rock deformation that accomplish such extreme change in mechanical behaviour during cratering are largely unknown and have been debated for decades. Recent drilling of the approximately 200-km-diameter Chicxulub impact structure in Mexico has produced a record of brittle and viscous deformation within its peak-ring rocks. Here we show how catastrophic rock weakening upon impact is followed by an increase in rock strength that culminated in the formation of the peak ring during cratering. The observations point to quasi-continuous rock flow and hence acoustic fluidization as the dominant physical process controlling initial cratering, followed by increasingly localized faulting.

Published
2018

9. Drilling-induced and logging-related features illustrated from IODP–ICDP Expedition 364 downhole logs and borehole imaging tools

Author

Lofi, Johanna, Smith, David, Delahunty, Chris, Le Ber, Erwan, Brun, Laurent, Henry, Gilles, Paris, Jehanne, Tikoo, Sonia, Zylberman, William, Pezard, Philippe A., Célérier, Bernard, Schmitt, Douglas R., Nixon, Chris, Gulick, Sean P. S., Morgan, Joanna V, Chenot, Elise, Christeson, Gail, Claeys, Phillipe, Cockell, Charles S, Coolen, Marco J L, Ferrière, Ludovic, Gebhardt, Catalina, Goto, K., Green, S., Jones, Heather, Kring, David A, Lowery, C., Mellett, C., Ocampo-Torres, R., Perez-Cruz, Ligia, Pickersgill, Annemarie E, Poelchau, Michael, Rae, Auriol S. P., Rasmussen, C., Rebolledo-Vieyra, M., Riller, Ulrich, Sato, H., Smit, J., Tomioka, N., Urrutia-Fucugauchi, J., Whalen, Michael, Wittmann, Axel, Xiao, L., Yamaguchi, Kosei E, Bralower, Timothy J, Analytical, Environmental & Geo-Chemistry, Earth System Sciences, Chemistry, Géosciences Montpellier, Institut national des sciences de l'Univers (INSU - CNRS)-Université de Montpellier (UM)-Université des Antilles (UA)-Centre National de la Recherche Scientifique (CNRS), British Geological Survey (BGS), DOSECC Exploration Services, Department of Geology [Leicester], University of Leicester, Department of Earth and Planetary Sciences [Piscataway], Rutgers, The State University of New Jersey [New Brunswick] (RU), Rutgers University System (Rutgers)-Rutgers University System (Rutgers), Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Collège de France (CdF (institution))-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Recherche Agronomique (INRA), Department of Physics, University of Alberta, Department of Earth, Atmospheric, and Planetary Sciences [West Lafayette] (EAPS), Purdue University [West Lafayette], Institute of Geophysics [Austin] (IG), University of Texas at Austin [Austin], Department of Geological Sciences [Austin], Jackson School of Geosciences (JSG), University of Texas at Austin [Austin]-University of Texas at Austin [Austin], Department of Earth Science and Engineering [Imperial College London], Imperial College London, Biogéosciences [UMR 6282] [Dijon] (BGS), Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Centre National de la Recherche Scientifique (CNRS), Analytical, Environmental and Geo- Chemistry, Vrije Universiteit Brussel (VUB), UK Centre for Astrobiology, SUPA School of Physics and Astronomy [Edinburgh], University of Edinburgh-University of Edinburgh, WA-Organic and Isotope Geochemistry Centre (WA-OIGC), The Institute for Geoscience Research [Perth] (TIGeR), School of Earth and Planetary Science [Perth - Curtin university], Curtin University [Perth], Planning and Transport Research Centre (PATREC)-Planning and Transport Research Centre (PATREC)-Curtin University [Perth], Planning and Transport Research Centre (PATREC)-Planning and Transport Research Centre (PATREC)-School of Earth and Planetary Science [Perth - Curtin university], Planning and Transport Research Centre (PATREC)-Planning and Transport Research Centre (PATREC), Natural History Museum [Vienna] (NHM), Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung (AWI), International Research Institute of Disaster Science, Tohoku University [Sendai], British Geological Survey [Edinburgh], Department of Geosciences [PennState], College of Earth and Mineral Sciences, Pennsylvania State University (Penn State), Penn State System-Penn State System-Pennsylvania State University (Penn State), Penn State System-Penn State System, Lunar and Planetary Institute [Houston] (LPI), Institut de chimie et procédés pour l'énergie, l'environnement et la santé (ICPEES), Université de Strasbourg (UNISTRA)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Instituto de Geofisica [Mexico], Universidad Nacional Autónoma de México (UNAM), School of Geographical and Earth Sciences, University of Glasgow, University of Glasgow, Department of Geology, University of Freiburg [Freiburg], Institut für Geologie, Universität Hamburg (UHH), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Faculty of Earth and Life Sciences [Amsterdam] (FALW), Vrije Universiteit Amsterdam [Amsterdam] (VU), Kochi Institute for Core Sample Research, Department of Geosciences, University of Alaska [Fairbanks] (UAF), LeRoy Eyring Center for Solid State Science, China University of Geosciences [Beijing], Department of Chemistry, Toho University, Funded by IODP withco-funding from ICDP and implemented by ECORD, with contributionsand logistical support from the Yucatán state government and the National Autonomous University of Mexico., Institut national des sciences de l'Univers (INSU - CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA), Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Collège de France (CdF)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Institut National de la Recherche Agronomique (INRA), Centre National de la Recherche Scientifique (CNRS)-Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Vrije Universiteit [Brussels] (VUB), WA Organic and Isotope Geochemistry Centre (WA OIGC), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et nanosciences d'Alsace, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Biogéosciences [UMR 6282] (BGS), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg (UNISTRA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Universidad Nacional Autónoma de México = National Autonomous University of Mexico (UNAM), and Geology and Geochemistry

Subjects
Geochemistry & Geophysics, 010504 meteorology & atmospheric sciences, Drill, Mechanical Engineering, 04 Earth Sciences, lcsh:QE1-996.5, Borehole, Drilling, [SDU.STU]Sciences of the Universe [physics]/Earth Sciences, Energy Engineering and Power Technology, 010502 geochemistry & geophysics, 01 natural sciences, Coring, Seafloor spreading, lcsh:Geology, Impact crater, Sedimentary rock, SDG 14 - Life Below Water, Petrology, Casing, Geology, 0105 earth and related environmental sciences
Abstract

13 pages; International audience; Expedition 364 was a joint IODP and ICDP mission-specific platform (MSP) expedition to explore the Chicxulub impact crater buried below the surface of the Yucatán continental shelf seafloor. In April and May 2016, this expedition drilled a single borehole at Site M0077 into the crater's peak ring. Excellent quality cores were recovered from ∼505 to ∼1335 m below seafloor (m b.s.f.), and high-resolution open hole logs were acquired between the surface and total drill depth. Downhole logs are used to image the borehole wall, measure the physical properties of rocks that surround the borehole, and assess borehole quality during drilling and coring operations. When making geological interpretations of downhole logs, it is essential to be able to distinguish between features that are geological and those that are operation-related. During Expedition 364 some drilling-induced and logging-related features were observed and include the following: effects caused by the presence of casing and metal debris in the hole, logging-tool eccentering, drilling-induced corkscrew shape of the hole, possible re-magnetization of low-coercivity grains within sedimentary rocks, markings on the borehole wall, and drilling-induced changes in the borehole diameter and trajectory.

Published
2018

10. Rapid diversification of planktonic foraminifera in the...

Author

Kelly, D. Clay and Bralower, Timothy J.

Subjects
*GEOLOGY, *PLANKTON, *MORPHOLOGY
Abstract

Reports on the findings of an study of the planktonic foraminiferal and calcareous nannoplankton responses in the tropical Pacific (ODP Site 865) during the late Paleocene thermal maximum. Study methodology; Findings revealed that near-surface dwelling planktonic foraminifera experienced changes; Applications of single-specimen stable isotope data; Evolutionary and paleoecological implications; Paleoceanographic interpretations.

Published
1996
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