Geologic Highlights of the San Francisco Bay

Region

Doris Sloan

with photographs by

John Karachewski

Earth Day ECL Presentation

April 22, 2009

Chapter 4 Marin County

Bolinas Lagoon and Point Reyes Peninsula

Geologic Map of Marin Co.

Pt. Reyes Lighthouse

Pt. Reyes Conglomerate

McClures Beach, Pt. Reyes National Seashore

Kehoe Beach, Pt. Reyes National Seashore

Drakes Bay/Purisima Formation, Drakes Beach, Pt. Reyes

Nicasio Reservoir, Golden Gate National Recreation Area

Marin Headlands, Golden Gate National Recreation Area

Murchey

Pt. Bonita Lighthouse

Ring Mountain Preserve

Chapter 5 San FranciscoSunrise

Geologic Map of San Francisco

Richmond District, 1900San Francisco History Center San Francisco Public Library

Ocean Beach, Golden Gate National Recreation Area

Golden Gate National Recreation Area

San Francisco

Artificial Fill since 1847

South of Market Area

Chapter 6, The Bay and Islands

Angel Island

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

Alcatraz Island

Red Rock

Chapter 7 The Peninsula

Año Nuevo State Reserve

San Gregorio State Beach

San Gregorio State Beach

Pebble Beach, Pescadero State BeachUSGS

James Fitzgerald Marine Reserve

Terraces near Davenport

Chapter 8, The South Bay

Diablo Range

Almaden Quicksilver Mine Photo by C.E. Watkins in Up and Down California, by Wm. Brewer

Almaden Quicksilver County Park

Los Trancos Open Space Preserve

Chapter 9, The East Bay

Mount Diablo and Delta

Geologic Map of the East Bay

Mt. Diablo

Mt. Diablo and Sierra Nevada

Black Diamond Mines Regional Preserve

Sand Mine, Black Diamond Mines Regional Preserve

Chapter 10, The North Bay

Mount St. Helena

Geologic Map of the North Bay

Silverado Trail, Napa Valley

Petrified Forest

The Geysers, 1920s The Bancroft LibraryUniversity of California

The Geysers

Jack London Winery, Sonoma County

Point Molate