Beds of cobble on Chumash Rock that may be from a 60 million year-old fan delta.
alt="According to the Dibblee geologic map of the area, these beds of cobble on Chumash Rock might have been deposited as part of a fan delta some 60 million years ago. January 29, 2006." border="0">
According to the Dibblee geologic map of the area, these beds of cobble on Chumash Rock might have been deposited as part of a fan delta some 60 million years ago. January 29, 2006.