This is a past event.

A Geologic History of the Catalina and Rincon Mountains

Geologist Bill Peachey speaks about three events that formed the Catalina and Rincon Mountains and other geologic features around the Tucson basin from 1 to 2 p.m., Sunday, Dec. 6. Free. Call 615-7855, or e-mail eeducation@pima.gov for more information.