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California Subduction Rocks
A photographic field trip to classic subduction-related rocks across northern California.

San Francisco Bay Area
Geological photo tour of the San Francisco Bay area, California.

Cascade Range and Columbia Plateau - Geology Picture Gallery
This pair of volcanic provinces stretches throughout the Pacific Northwest and adjacent states.

Great Valley of California
A dozen shots from the Central Valley and its foothills.

California Desert Geology
A select gallery of photos from the Mojave Desert and surrounding region.

Creeping Segment of the San Andreas Fault
Follow the creeping segment of the San Andreas fault as it traverses classic western countryside from Hollister to Parkfield, California.

Aleutian Islands, Alaska
Photos and diary excerpts from a research cruise in the Aleutians and the western Gulf of Alaska.

Central California Ranges
Between King City and Panoche lies the San Andreas fault zone, the New Idria mining district, and lots of quiet countryside.

Gulf of Alaska Coast
One of the world's grandest and wildest coasts, this part of the globe is a profoundly impressive place. Includes Glacier Bay.

Hayward Fault, California
Join a group of geologists on a tour of the dangerous Hayward fault from the north end to the south.

Hector Mine Earthquake, Mojave Desert
The 16 October 1999 Hector Mine quake was a benign bonanza for science.

Joshua Tree National Park
A show-and-tell about a classic geologic destination including its rocks, landforms and vegetation.

Mohawk Valley/Finger Lakes, New York
Photos, maps and information about the classic Paleozoic and glacial landscape of upstate New York.

Oakland, California
A slow-growing tree of pages where I celebrate the remarkable features of my home town, starting at Lake Merritt.

The Oregon Outback
The Oregon Outback may be the prettiest part of the Basin and Range.

Western Transverse Ranges, California
The rugged mountains north of Santa Barbara are pierced by state route 33, between Ojai and Cuyama.

Yakutat, Southeastern Alaska
The wilderness around Dry Bay and the Alsek River delta is the highlight of this tour.