40270
Accession Number
6984
Author
Bischoff, James L.; Childers, W. Morlin
Title Of Article Chaper
Temperature calibration of amino acid racemization: age implications for the Yuha skeleton
Title Of Journal Book
Earth Planet. Sci. Lett
Volume
45
Issue
1
Pages
172-180
Literature Type
Serial
Literature Level
Analytic
Abstract
The D-aspartic acid-to-L-aspartic acid ratio ranged 0. 52-0.56 for femur samples of a Yuha skeleton. Subsurface temperature measurements made at the burial site indicate the average annual temperature is 18° and diagenetic temperature is 21.6°. These data and a relation derived for the dependence of the aspartic acid rate constant on diagenetic temperature indicate an age of 23,600 years. The result is consistent with<sup>14</sup>C and <sup>230</sup>Th dating of calcrete found coating the bones. -- AATA
pub_id
40270