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Assessing subsidence rates and paleo water-depths for Tahiti reefs using U Th chronology of altered corals

Abstract:

We present uranium-thorium chronology for a 102 m core through a Pleistocene reef at Tahiti (French Polynesia) sampled during IODP Expedition 310 “Tahiti Sea Level”. We employ total and partial dissolution procedures on the older coral samples to investigate the diagenetic overprint of the uranium-thorium system. Although alteration of the U Th system cannot be robustly corrected, diagenetic trends in the U Th data, combined with sea level and subsidence constraints for the growth of the cora...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Author's Original

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Publisher copy:
10.1016/j.margeo.2011.12.006

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Institution:
University of Oxford
Oxford college:
Hertford College
Department:
Mathematical,Physical & Life Sciences Division - Earth Sciences
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Institution:
University of the Ryukyus, Okinawa, Japan
Department:
Department of Physics and Earth Sciences
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Institution:
Tohoki University, Sendai, Japan
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Institution:
Aix-Marseille Université, CNRS, IRD, Collège de France, Europole de l'Arbois, Aix-en-Provence, France
Department:
CEREGE
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Institution:
Institut de Recherche pour le Dévelloppement BP, Nouméa Cedez New Caledonia France
Department:
Research Unit 'Paleotropique'
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Funding agency for:
Alexander L. Thomas
Publisher:
Elsevier Publisher's website
Journal:
Marine Geology Journal website
Volume:
295-298
Pages:
86-94
Publication date:
2012-02-05
DOI:
ISSN:
0025-3227
URN:
uuid:b411e21d-92f9-4e4f-81e7-1f6698dedf82
Local pid:
ora:6305

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