THE GEOLOGIC STORY OF THE SAN JACINTO MOUNTAINS

Mt. San Jacinto, 10834 ft.

Mt San Jacinto northern escarpment as seen from the tram

Why are the San Jacinto Mountains so strikingly vertical from the valley floor? Geologic forces are at fault (hint) and have been in play as far back as 70 million years ago. Do you wonder why the vertical rock faces you see from the tram look so different from the rocks at the top?

Join Park Interpreter Ali Barnes to investigate the complicated geologic story behind the making of these towering peaks. She will begin with an hour long illustrated presentation and then we’ll take a 1.5-mile walk around Long Valley to apply that newly gained knowledge to our immediate surroundings that have been in the making for over 200 million years!

Date: October 21, 2017
Time: 9:00-12:00 PM
Meet at: Nichols Room to the left of the ground floor terrace of the mountain station.
Hike Level: Easy to moderate
Instructor: Allison Barnes, B.S. Geology, Astronomy, State Park Interpreter
Class Size: Limited, register early

Questions: sjprograms@msjnha.org

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