Deep (or not so deep) history of the San Francisco Bay

Doris Sloan

Department of Earth & Planetary Science, UCB

John Karachewski

After Cohen, 2000

After Conomos, 1979

John Karachewski

Geologic Processes that Form the BayGeologic Processes that Form the Bay

• Crustal (Tectonic) Movements

• Sea Level Rise and Fall

• Crustal (Tectonic) Movements

• Sea Level Rise and Fall

Plummer & McGeary, 1991

View north from Mt. TamalpaisJohn Karachewski

Geologic Processes that Form the BayGeologic Processes that Form the Bay

• Crustal Movements

• Sea Level Rise and Fall

• Crustal Movements

• Sea Level Rise and Fall

Sea-level lowstand, 20,000 years ago K. Kalamars

John Karachewski

After LaJoie, 2001

Amy Lesen

Atwater et al., 1981

USGS

The San Francisco Chronicle

The San Francisco Chronicle