Point Reyes National Seashore Association
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Geology of the San Francisco Waterfront

Point Reyes National Seashore Association
Point Reyes National Seashore
Point Reyes Station, CA 94956
Saturday, Mar. 16, 2013
9:00 AM  - 5:00 PM

John Karachewski, Instructor

Discover the interesting geology along the San Francisco waterfront in the Golden Gate National Recreation Area from Fort Mason to the San Andreas Fault in Daly City. San Francisco is underlain by five terranes or blocks comprised of rocks that formed in different plate tectonic settings with fascinating histories. At Fort Mason, we will examine sandstones of the Alcatraz Terrane and the only natural exposure along the northeastern shoreline of the city. At Fort Point we will observe serpentine that formed in the upper mantle of the Farallon Plate and was subsequently accreted to North America. At Lands End, we will hike down to view sandstone and shale turbidites near the former Sutro Baths and explore adjacent sea caves, if wave conditions permit. At our last stop in Daly City, we will visit the edge of the North American Plate near Mussel Rock and discuss the evolution of the San Andreas Fault System. During our trip, we will also learn about Ice Age sand dunes that blanket the city, erosion and sediment transport along Ocean Beach, the 1906 earthquake, natural hazards, and climate change.

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Point Reyes National Seashore Association Purchase/refund policy: Membership Refund Policy: Notification must be received within one week from transaction date (minus a $10 processing fee for each membership). Field Seminar Refund Policy: Notification must be received at least 14 days before the first day of the class if you cancel and wish to receive a refund (minus a $10 processing fee for each person registered) or a full credit toward another seminar (good for one year). No refunds, transfers or credits will be issued on cancellations made less than 14 days in advance. We regret that NO EXCEPTIONS to this cancellation policy can be made, even for medical reasons. In the rare event that Point Reyes Field Seminars cancels a program, we will issue a full refund or credit.

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