1. Map showing compilation of isotopic ages of Cenozoic rocks in the Reno 1⁰ x 2⁰ quadrangle, Nevada and California Yale Public content 1994. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. California and Nevada. Cenozoic.