title: Cation-ratio and accelerator radiocarbon dating of rock varnish on mojave artifacts and landforms.
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(+) + 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.
authors.forename: R I
authors.initials: RI
authors.lastname: Dorn
authors.forename: D B
authors.initials: DB
authors.lastname: Bamforth
authors.forename: T A
authors.initials: TA
authors.lastname: Cahill
authors.forename: J C
authors.initials: JC
authors.lastname: Dohrenwend
authors.forename: B D
authors.initials: BD
authors.lastname: Turrin
authors.forename: D J
authors.initials: DJ
authors.lastname: Donahue
authors.forename: A J
authors.initials: AJ
authors.lastname: Jull
authors.forename: A
authors.initials: A
authors.lastname: Long
authors.forename: M E
authors.initials: ME
authors.lastname: Macko
authors.forename: E B
authors.initials: EB
authors.lastname: Weil
authors.forename: D S
authors.initials: DS
authors.lastname: Whitley
authors.forename: T H
authors.initials: TH
authors.lastname: Zabel