Tag: "lava"
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
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
