Expired Ring Mountain, Tiburon, 3 or 5 miles “Exotic Blocks-Thermometers in Subduction”

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Ring Mountain is Trip 4 in the Geologic Trips: San Francisco Bay Area; the trip is subtitled “Exotic Blocks — Thermometers in the Subduction Zone.” General details about the hike and the geology can be found here. As usual, the first 15 minutes will be a short background talk on the overall geology of the (more…)