The data presented in this study demonstrate the feasibility of using amino acid
racemization in ostracodes for geochronology. The sample size required for
an analysis is an order of magnitude less than for AMS 14C dating and presents
a new opportunity to derive ages for deposits that are organic poor or suffer
from large 14C reservoir effects. Because ostracodes are common in subaqueous
depositional settings, the technique can be integrated into studies of lake
sediment cores. These environments are ideally suited for amino acid geochronology
because, unlike materials collected from emerged deposits, the temperature
history of ostracodes recovered in sediment cores from deep lacustrine and
marine settings can be estimated confidently within narrow limits.
Version 1.0
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Posted June 2005 |
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