Erosion Road: the Borrego Badlands

Sunday, March 15, 2015 - 8:00am to 4:00pm


Instructor: Paul Remeika
$70 / $60 for ABF members

This introductory field trip leads east from Borrego Springs through Anza-Borrego’s most dynamic landscape. On either side of S-22 (Erosion Road), mountain-building, stretching and horizontal shifting of the disjointed Coyote and Santa Rosa Mountains, and weathering and erosion of the landscape highlight this driving tour. The excitement of geologic forces at work here is ever-changing, revealing an untamed and rugged basin-and-range setting unlike any in southern California.

Since the Miocene Epoch, tectonic activity has pulled apart the earth’s crust, moving mountain masses around on great fault lines, while the opposing forces of weathering and erosion tear them down. This on-going conflict has formed canyons, alluvial fans, bajadas, playas, and arroyos, plus deposited in the basins colorful sedimentary layerings repleat with fossil resources that have been uplifted and exposed as the Borrego Badlands. The area continues to be one of the most seismically active regions in North America. Join retired ranger Paul Remeika to make sense of it all.

Hiking Level: This 7-hour auto tour includes various stops and a few short, yet strenuous hikes to points of geologic interest.

Meet: Anza-Borrego Desert State Park Visitor Center parking lot at 8:00 a.m.

Bring: adequate water, lunch, and a camera. Wear sturdy hiking boots and hat. Four wheel drive is required. We may need to carpool to reduce the number of vehicles.