Geologic Trips, Fort Funston

Fort Funston Bluff


The bluff below the Viewing Platform at Fort Funston is made up of sedimentary rocks that were deposited in a small sedimentary basin that had formed along the San Andreas fault during Pleistocene time. These sediments, called the Merced Formation, are exposed as distinct layers that can be seen along the bluff from Lake Merced southward to the San Andreas fault near Mussel Rock, a distance of about four miles. Some of the layers of sedimentary rocks are nearly horizontal and some are tilted to the north, indicating that the rocks have been uplifted and folded in the few hundred thousand years since they were deposited.

Related Links

Geologic background: Fort Funston (pdf)

Geologic trips: Fort Funston Bluff Ocean Beach


Exterior Websites

Golden Gate National Parks Conservancy: Fort Funston

National Park Service: Fort Funston

Viewing platform