English: Chevron folds in ribbon cherts of the Marin Headlands, California.
Date
Source
Private collection, American Geophysical Union.
Author
Photo was taken by Nam Thai, photographer under contract for the American Geophysical Union. As an editor of a field trip guide published by the American Geophysical Union, I have received express written permission from the American Geophysical Union to publish this photo to Wikimedia Commons for use in Wikipedia articles.
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