Tag: "volcanic rocks"
Side Trips from Interstate 5: Sutter Buttes
The Sutter Buttes are an oak-studded island of extinct volcanoes in the Sacramento Valley bottomlands. Step off the freeway to see California's nearest thing to Shangri-La.
Post on Apr 26, 2012 by Andrew Alden from QUEST Northern California
Geological Outings Around the Bay: New Almaden
The New Almaden area looms large in Gold Rush history. Today it's an open-air museum of California mining practices and quicksilver geology.
Post on Mar 15, 2012 by Andrew Alden from QUEST Northern California
Geological Outings Around the Bay: The Moraga Formation
The Moraga Formation's distinctive set of volcanic rocks can be visited in many places in the East Bay hills. Let's have a look at five localities.
Post on Aug 25, 2011 by Andrew Alden from QUEST Northern California
Geological Outings Around the Bay: The Cordelia and Green Valley Faults
The Cordelia fault is about as user-friendly as a fault can be, and its appearance west of Fairfield is the best fault exposure in the Bay Area.
Post on Jun 16, 2011 by Andrew Alden
Bay Area Volcanoes
Lava flows and ashfall beds are widespread in our rocks, marking the progress of an ancient volcanic center through the area. Indeed, volcanism helps you read this story.
Post on Apr 28, 2011 by Andrew Alden
Geological Outings Around the Bay: Marin Headlands
The Marin Headlands are a textbook location to see some classic rocks of the Franciscan Complex, rocks that literally shape San Francisco's worldview.
Post on Apr 21, 2011 by Andrew Alden
