Journal
MARINE MICROPALEONTOLOGY
Volume 50, Issue 3-4, Pages 225-236Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0377-8398(03)00073-2
Keywords
Amphistegina; Hawaiian beach sand; radiocarbon ages
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Radiocarbon dating of tests of Amphistegina spp. from the surface sand of Hawaiian beaches has revealed ages up to 1500 years or more. Preservation is related to age: the residual umbos are older than the intact tests. The antiquity of some of the tests suggests that predictions of a sand turnover rate of less than 100 years time based on Amphistegina productivity studies are in error and that the majority of tests produced in nearshore environments of Hawaii do not accumulate on the beach. (C) 2003 Elsevier B.V. All rights reserved.
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