RADIOISOTOPES IN THE
DIABASE SILL (UPPER
PRECAMBRIAN) AT BASS
RAPIDS, GRAND
CANYON, ARIZONA: AN
APPLICATION AND TEST OF
THE ISOCHRON DATING
METHOD
STEVEN A. AUSTIN, Ph.D.
ANDREW A. SNELLING, Ph.D.
WILLIAM A. HOESCH
This paper also gives evidence for a past acceleration in radioactive decay.