Jere Lipps explains the deposition of non-marine and marine sedimentary rocks at Millerton Point State Park along Tomales Bay. (photo by Trish Roque)
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Jere (behind post) explains how these pillow lavas, exposed along the Pt. Reyes-Petaluma Road near Nicasio Reservoir, were formed in sea water. (photo by Trish Roque)
Jere outlines the origins of San Francisco Bay. (photo by Trish Roque)

May, 2005
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