Tectonic Terrane Map
This map shows the eight tectonic terranes of the Franciscon Complex in the San Francisco Bay area, as well as the important San Andreas and Hayward faults. Each terrane is characterized by a specific history of rock deposition and degree of metamorphism.
Did You Know?
Colonel Albert Sidney Johnston, commander of the Pacific branch of the army, prepared the defenses of the San Francisco Bay and ordered the first garrison of Fort Point. Kentucky-born Johnston then resigned his commission to join the Confederate Army; he was killed at the battle of Shiloh in 1862.