Tinted detail of a photo: Aerial view of steep limestone mountain ridges whose pale rock layers are tilted almost vertical, with green grassy slopes between them, a deep shadowed valley and a building with a mast on the left summit.
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Tectonics and Structural Geology
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William Elder

San Francisco: Where the Plates Meet

San Francisco: Where the Plates Meet

San Francisco has been a natural gathering place for people across the millennia. It is not a coincidence that this city, situated at the entrance to the largest estuary on the U.S. West Coast, owes its dramatic setting to active geology on the North American plate margin. The first people of the San Francisco Peninsula, …[Read More]