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