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U-234/U-238 RATIOS AND TH-230 AGES FOR HATERUMA ATOLL CORALS - IMPLICATIONS FOR CORAL DIAGENESIS AND SEAWATER U-234/U-238 RATIOS

Abstract:

Published results for corals that are more than ca. 50 ka old from, for example, Barbados and Vanuata, often yield initial ( 234U 238U) activity ratios that are significantly greater than 1.144 (±0.004), the value for modern seawater. This study reports results for corals from Hateruma Atoll, Japan, and investigates the effects of diagenesis on the initial ( 234U 238U) ratios of the corals. Hateruma consists of over 95% reef material of less than 500 ka in age. Because groundwaters associated...

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Publication status:
Published

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Institution:
University of Oxford
Department:
Oxford, MPLS, Earth Sciences
Journal:
EARTH AND PLANETARY SCIENCE LETTERS
Volume:
115
Issue:
1-4
Pages:
65-73
Publication date:
1993-03-05
DOI:
ISSN:
0012-821X
URN:
uuid:b08ea186-82ba-4b74-8b5b-ab166d43502c
Source identifiers:
205584
Local pid:
pubs:205584

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