1. Coral Patch and Ormonde seamounts as a product of the Madeira hotspot, Eastern Atlantic Ocean
- Author
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Lucilla Capotondi, Luigi Vigliotti, Marinella A. Laurenzi, Luigi Torelli, Teresa Trua, Filippo D'Oriano, Nevio Zitellini, Matthias López Correa, Marco Taviani, and Lorenzo Angeletti
- Subjects
GORRINGE BANK ,geography ,geography.geographical_feature_category ,010504 meteorology & atmospheric sciences ,Lava ,Coral ,Seamount ,Geology ,ALKALINE VOLCANISM ,Volcanism ,PLATE BOUNDARY ,010502 geochemistry & geophysics ,COMPRESSIONAL DEFORMATION ,01 natural sciences ,NORTH-ATLANTIC ,Tectonics ,Oceanography ,Volcano ,Hotspot (geology) ,Bathymetry ,14. Life underwater ,0105 earth and related environmental sciences - Abstract
Terra Nova, 22, 494–500, 2010 Abstract New detailed swath bathymetry and bottom samples from Coral Patch and Ormonde seamounts provide constraints on the emplacement of the Madeira hotspot in the Eastern Atlantic Ocean. Swath bathymetric data document that Coral Patch is a composite structure, made up of at least nine distinct volcanic centres. Lithified pelagic carbonates infilling fissures in lava blocks constrain a minimal age for the volcanism in the Early Miocene and represent the first documentation of Coral Patch acting as an offshore terrigenous-starved seamount. At Coral Patch, as already observed at the Ormonde seamount, volcanism was emplaced on top of a pre-existing relief resulting from the regional tectonic compressive regime.
- Published
- 2010
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