California Rocks!: A Guide to Geologic Sites in the Golden State

California is home to spectacular natural features that are made even more interesting when you know something about their geology. As Katherine Baylor observes in California Rocks! about the landscape of the Golden State, “ This spectacular tableau is the culmination of hundreds of millions of years of geologic processes, from the collision of tectonic plates to volcanic eruptions and earthquakes, to glaciation, sea level changes, erosion, and deposition.”

Geology-wise, California has it a...