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Active and Fossil Rhyolite-Hosted Epithermal Systems of the Mojave Desert

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Published:
January 01, 1991

Abstract

Our trip departs from San Diego near the border between the United States and Mexico. Unfortunately we have a long trip to the first major stop, but you will get a chance to see a lot of Southern California geology and scenery along the way.

Proceeding north along route 15/215 we pass through the hills and valleys of the relatively lush coastal region and into the more typical semi-arid interior of southern California. Knobs of granitic rock belonging to Peninsular Ranges Batholith can be seen separating the valleys in which irrigated farms and housing developments abound. Much of the water used for both of these is imported, either from the Colorado River to the east, or from the Owens Valley, near the destination of todays' drive.

As we approach the city of Riverside, larger mountains become visible to the north and east. These are the San Jacinto mountains to the east and the Transverse Ranges (San Bernardino and San Gabriel mountain ranges) to the north which reach elevations of over 10,000 ft. thanks to the prodding of the San Andreas Fault Zone.

Nearing the city of San Bernardino we cross the San Jacinto Fault (one of the more active strands of the San Andreas transform fault trend) conveniently located directly beneath the interchange for the 10 and 215 freeways.

We then climb up into the Cajon Pass where we cross the main strand of the San Andreas Fault, forming a saddle between the San Gabriel mountains to the west and

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Contents

Society of Economic Geologists Guidebook Series

The Diversity of Mineral and Energy Resources of Southern California

Michael A. McKibben
Michael A. McKibben
Search for other works by this author on:
Society of Economic Geologists
Volume
12
ISBN electronic:
9781934969656
Publication date:
January 01, 1991

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