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Published byHerbert Walker Modified over 9 years ago
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Transforming California Landforms of the San Andreas Fault Images & text by Thomas McGuire, Cave Creek Digital, Cave Creek, AZ cavecreekdigital@msn.com “If we intend to live on this planet… we truly need to understand how it works.”
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Exploring ways to find fault…
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3 The author at Parkfield CA, site of USGS seismic experiment. “Be here when it happens!”
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4 Fault Issues 1. Fault Scarps & Alignments 2. Sag Ponds 3. Offset Drainages 4. Distortion of Human-Made Structures 5. Infrastructure Vulnerability
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5 Basic California Geography Imperial Valley Los Angeles Mojave Desert San Joaquin Valley San Francisco San Andreas Fault Death Valley
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6 San Andreas Lakes viewed from the south near San Jose
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7 The San Andreas fault is part of the boundary between the North American and Pacific tectonic plates. It is classified as a right lateral transform fault. (To a person facing the fault, the far side shifts to the right.) Our Dynamic Earth, Robert Tilling, USGS, 1996
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8 The Sea of Cortez.. (Known to Gringos as The Gulf of California.)
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9 The US-Mexican Border (fence line) is as impervious to plate processes as it is to immigration.
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10 The All-American Canal brings Colorado River water to the Imperial Valley of California.
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11 Wind Farm north of Palm Springs near San Gorgonio Pass.
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12 The main trace of the fault runs NE of Los Angeles, but numerous splay faults affect the LA Basin.. (So does smog.)
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13 California Aqueduct at Palmdale, north of Los Angeles.
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14 Gates along the California Aqueduct at Palmdale
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