Selected resources:

This Dynamic Earth
Online text.
Kious and Tilling, 1996, U.S. Geological Survey

Geology of Southern California
Western Earth Surface Processes Team, U.S. Geological Survey

Images

Visible Earth
"A catalog of NASA images and animations of our home planet."
NASA

Maps

Preliminary Geologic Maps - Southern Region
Preliminary online .pdf versions of geologic maps released by the California Geological Survey.
California Geological Survey