Publication Date:
1986-02-21
Description:
The first accelerator radiocarbon dates of rock varnishes are reported along with potassium/argon ages of lava flows and conventional radiocarbon dates of pluvial lake shorelines, in an empirical calibration of rock varnish K(+) + Ca(2+)/Ti(4+) ratios with age in the Mojave Desert, eastern California. This calibration was used to determine the cation-ratio dates of 167 artifacts. Although cation-ratio dating is an experimental method, some dates suggest human occupation of the Mojave Desert in the late Pleistocene.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dorn, R I -- Bamforth, D B -- Cahill, T A -- Dohrenwend, J C -- Turrin, B D -- Donahue, D J -- Jull, A J -- Long, A -- Macko, M E -- Weil, E B -- Whitley, D S -- Zabel, T H -- New York, N.Y. -- Science. 1986 Feb 21;231(4740):830-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17774077" target="_blank"〉PubMed〈/a〉
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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