Cation-ratio and accelerator radiocarbon dating of rock varnish on Mojave artifacts and landforms

Ronald I. Dorn, D. B. Bamforth, T. A. Cahill, J. C. Dohrenwend, B. D. Turrin, D. J. Donahue, A. J.T. Jull, A. Long, M. E. Macko, E. B. Weil, D. S. Whitley, T. H. Zabel

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

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 + + Ca2+/Ti4+ 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.

Original languageEnglish (US)
Pages (from-to)830-833
Number of pages4
JournalScience
Volume231
Issue number4740
DOIs
StatePublished - Jan 1 1986
Externally publishedYes

ASJC Scopus subject areas

  • General

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