April 01, 2006 by Doris Sloan
All of the familiar landforms we see here in the Bay Area—ridges, cliffs, lakes, and even San Francisco Bay itself—are products of the same titanic encounters between tectonic plates that produce our frequent quakes. Through a geologist’s trained eye, we learn to interpret the signs these forces have left on the land around us.
October 01, 2002 by Doris Sloan
A: The oldest rocks in the Bay Area are metamorphic rocks associated with the granitic rocks at Point Reyes, Bodega …