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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 102m 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 coral...

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Journal:
Marine Geology More from this journal
Volume:
295-298
Pages:
86-94
Publication date:
2012-02-15
DOI:
ISSN:
0025-3227
Language:
English
Keywords:
Pubs id:
pubs:341493
UUID:
uuid:1cd5767c-0fc8-4a30-82bf-2ff2ee9af0bb
Local pid:
pubs:341493
Source identifiers:
341493
Deposit date:
2012-12-19

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