Description:
Radiogenic age determinations, which involve precise field studies and
detailed laboratory analyses, are expensive. Results have been included in
many scientific publications, some of which are obscure. The purpose of
this report is to make radiometric age determinations for Arizona more
accessible to users. we have attempted to assemble all published determinations
to collate them and index them to facilitate their use. The determinations
are indexed by age, geographic location, and rock unit. The location
for each determination is plotted on the accompanying maps. To the
best of our knowledge, this is one of the first computerized and cross indexed
age compilations of its kind.