Skip to Main Content
Skip Nav Destination

Amino-acid enantiomeric ratios, or D/L values, in molluscs from central and southern California Quaternary coastal units are compared and summarized using a combination of stratigraphic control, kinetic modeling, and current temperature differences along the coast. Methods for comparison of analytical data obtained by both gas-chromatographic and liquid-chromatographic methods are used to normalize results obtained over nearly 15 years into a common format. Most of the results imply ages that fall within stage 5 of the marine oxygen isotope record. Distinct aminozones representing at least three pre-stage 5 depositional episodes are also recognized. Discrepancies between amino-acid age estimates and those derived from independent evidence are quantified using kinetic modeling, and an anomalous local thermal history is invoked to explain one particular conflict between aminostratigraphic and mor-phostratigraphic interpretations.

You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
Close Modal

or Create an Account

Close Modal
Close Modal