Presentation on theme: "Transforming California"— Presentation transcript:
1Transforming California Landforms of theSan Andreas FaultImages & text by Thomas McGuire,Cave Creek Digital, Cave Creek, AZ“If we intend to live on this planet…we truly need to understand how it works.”
3The author at Parkfield CA, site of USGS seismic experiment The author at Parkfield CA, site of USGS seismic experiment. “Be here when it happens!”
4Fault Issues 1. Fault Scarps & Alignments 2. Sag Ponds 3. Offset Drainages4. Distortion of Human-Made Structures5. Infrastructure Vulnerability
5Basic California Geography SanAndreasFaultSan FranciscoSanJoaquinValleyBasicCaliforniaGeographyDeath ValleyMojave DesertLos AngelesImperialValley
6San Andreas Lakes viewed from the south near San Jose
7The 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
8The Sea of Cortez.. (Known to Gringos as The Gulf of California.)
9The US-Mexican Border (fence line) is as impervious to plate processes as it is to immigration.
10The All-American Canal brings Colorado River water to the Imperial Valley of California.
11Wind Farm north of Palm Springs near San Gorgonio Pass.
12The main trace of the fault runs NE of Los Angeles, but numerous splay faults affect the LA Basin.. (So does smog.)
13California Aqueduct at Palmdale, north of Los Angeles.