Direct U/Th Dating of the Marine Oxygen Isotope Record
Direct U/Th Dating of the Marine Oxygen Isotope Record
批准号:
9632376
负责人:
Robert Anderson
金额:
$21.79万
依托单位:
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
1996
资助国家:
美国
项目状态:
已结题
起止时间:
1996-08-01 至 2000-01-31
中文摘要
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英文摘要
OCE-9632376 This project will develop a new technique (U-Th) for dating marine aragonite sediments beyond the range achievable by 14C. Preliminary results on aragonite have produced ages for Stages 5 and 7 in agreement with the orbitally-tuned 18O scale. The project will test these results by attempting to duplicate them elsewhere, extend the dating to Stage 9, and improve the precision. Direct and independent age control on deep-sea carbonates is essential for models concerning the ocean's role in global climate change, especially such aspects as regional linkages and feedbacks.
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