Geologic features of the San Andreas Fault Zone from Fort Tejon State Park to Pallet Creek : field guide

166 Pages·1993·54.2 MB·English

by  United States. Bureau of Land Management. Bakersfield District

FIELD GUIDE
GEOLOGIC FEATURES OF THE
SAN ANDREAS FAULT ZONE
FROM FORT TEJON STATE PARK
TO PALLET CREEK
SPONSORED BY
U.S.D.I. BUREAU OF LAND MANAGEMENT
BAKERSFIELD DISTRICT OFFICE
March 6, 1993

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FIELD GUIDE
GEOLOGIC FEATURES OF THE
SAN ANDREAS FAULT ZONE
FROM FORT TEJON STATE PARK TO PALLET CREEK
Sponsored by
U.S.D.I. BUREAU OF LAND MANAGEMENT
BAKERSFIELD DISTRICT OFFICE
FIELD TRIP LEADERS
Gregg Wilkerson, Geologist
Anne Falcon, Geologist
Phil Lopez, Soil, Water, and Air
Frank Mesa, Assistant Technician
CONTRIBUTORS
Danny Conway, Lake Hughes Community Club
Devil's Punchbowl L. A. County Park
Fort Tejon State Park
Charles Foss, Geologist
National Cement Company
Southern California Edison
and other BLM personnel and volunteers
BLM Library
Bidg, 50 |
Denver Federal Center
P.O, Box 25047
Denver, Colorado 80225
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THE SAN ANDREAS FAULT: FORT TEJON STATE PARK TO PALLET CREEK
This field trip is one of a series of geologic excursions offered
to the general public by the Bureau of Land Management in order to
increase awareness and appreciation of the geology, mineral
resources, and geologic hazards of southern California. For copies
of this field guide, for additional information on college credit
offered through the California State University-Bakersfield, and/or
to be placed on a mailing list for future geologic excursions
write:
Bureau of Land Management
800 Truxtun Avenue, Rm. 311
Bakersfield, CA 93301
(805) 861-4210
OVERVIEW
The trip starts from Fort Tejon State Park parking lot, located on
the west side of I-5, north of Gorman, south of Bakersfield, in the
town of Fort Tejon, the headquarters of the Tejon Ranch. From Fort
Tejon, the tour will proceed along the San Andreas Fault through
Gorman, the National Cement Company, Lake Hughes lunch stop,
Palmdale, Devil's Punchbowl, and ends at Pallet Creek.
In order to present the maximum amount of information, most stops
are limited to 20 minutes, except for the lunchtime stop and the
National Cement stop which will be longer. Participants are
encouraged to bring a sack lunch and beverages. All vehicles are
encouraged to bring a CB radio set to channel 20.
A CB RADIO OR HIGH-CLEARANCE VEHICLE IS NOT A REQUIREMENT FOR THIS
TRIP. ALL TRAVEL IS ON PAVED ROADS.
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FIELD STOPS
STOP # 1. Fort Tejon State Park
STOP # 2. Overlook of the San Andreas and Garlock Fault
intersection
| STOP? 03" National Cement mine and plant
LUNCHSTOP AT LAKE HUGHES COMMUNITY CLUB
STOP # 4. Roadcut at State Highway 14 & Avenue S in Palmdale
STOP # 5. Devil's Punchbowl Los Angeles County Park
STOP # 6. Pallett Creek site
FIGURES
FIGURE # 1. ‘Truncated river terrace and alluvial fan near
intersection of San Andreas and Garlock Faults.
FIGURE # 2. Example of accelerated erosional processes in road cut
near Gorman along the San Andreas Fault.
FIGURE # 3. Soil and vegetation contrasts at along San Andreas
Fault. Neenach Formation to right. Quartz Monzonite to left.
FIGURE # 4. Truncated Hillside.
FIGURE # 5. Truncated Hillside.
FIGURE # 6. Lake Hughes, a sag pond along the San Andreas Fault
zone.
FIGURE # 7. Deformed Hungry Valley Formation in pressure ridge
within San Andreas Fault zone at Highway 14 roadcut near Palmdale.
FIGURE # 8. Punchbowl Formation rocks at Devil's Punchbowl County
Park.
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TABLES
TABLE # 1. Geologic Time Scale
TABLE # 2. Soil Weathering
TABLE # 3. Soil Descriptions
TABLE # 4. Lithologic Descriptions
MAPS
Maps of the route from Fort Tejon to Pallett Creek. These are all
shown on U.S. Geological Survey Topographic map bases.
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