A visit to Kehoe Beach takes you on a journey to one of the Bay Area’s most dramatic geologic sites, where you can see rocks that have traveled far through time and space to pause temporarily in the Bay Area.
Doris Sloan
Doris Sloan's articles on the geology of the Bay Area have been appearing in Bay Nature since our first issue. Her book Geology of the San Francisco Bay Region was published by UC Press in 2006.
The Story of Salt Point State Park is Written in Stone
July 1, 2010 •
You’ll find some of Central California’s most remarkable rocks at this state park on the Sonoma coast. Waves, fault lines, and changes in sea level have left sublime stories written into the landscape.
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The Fremont Peak Experience
April 1, 2008 •
Discover rare rocks, distant stars, beautiful wildflowers, and a bit of California history all at one small state park south of San Juan Bautista.
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On The Move
April 1, 2006 •
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.
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Down to the Sea Again
January 1, 2005 •
Daly City’s cliffs hold tales of ancient seas and volcanic eruptions. But don’t count on them to stand still under your feet, or your home.
What, and where, are the oldest rocks in the Bay Area?
October 1, 2002 •
A: The oldest rocks in the Bay Area are metamorphic rocks associated with the granitic rocks at Point Reyes, Bodega Head, and Montara Mountain. They have traveled a long way in space and time to get here. They all occur … Read more
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Goat Rock State Beach
July 1, 2001 •
The Pacific Coast north of San Francisco is justly renowned for its scenic beauty. It is also geology writ large, where evidence of powerful forces still at work on our region is exposed at many places. Goat Rock State Beach … Read more