Anza-Borrego main content.

Anza-Borrego

Part of Hall of Planet Earth.

Anza-Borrego AMNH/R.Mickens

This strand of the San Andreas cuts through layers of sedimentary rock in the Anza-Borrego Desert in southern California. The pebbly layer was off-set about 1 meter when the block on the right dropped during movement on the fault.