Visit a Pluton, Origin & Geology of Mt. San Jacinto, Long Valley Walkabout

VISIT A PLUTON(Find out what a pluton is)This course will examine the Rock Cycle in general, and the origin of Mt. San Jacinto in particular. We will spend about an hour in the classroom, then proceed to the field to examine the plutonic nature of the Mountain, and how the titanic forces of creation and the subtle, but inexorable forces of destruction have played out locally, over geologic time. It’s a big story that has played out for over 200 million years and it never ends. Mt San Jacinto has become the second highest peak in Southern California over the last 2 million years or so. But, the rock is much older! Find out why.

Date and Time: Saturday June 17, 9 am to ~12 pm
Meet at: The Nichols Room off the ground floor terrace of the mountain station.
Instructor: Robert Pellenbarg has a Doctorate in Chemical Oceanography, has worked for the US Navy for over 25 years, and, most recently, taught Earth Science, and Oceanography at College of the Desert.
Hike level: easy, about 2 hours Long Valley
Class size: limited to 15 participants

If you have any questions please contact the NHA at: sjprograms@msjnha.org

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