US GEOLOGICAL SURVEY / SCIENCE PHOTO LIBRARY US GEOLOGICAL SURVEY / SCIENCE PHOTO LIBRARY
Aerial photograph of the San Andreas fault as it crosses the Carrizo Plain approximately 450km (300 miles) south of San Francisco & 160km (100 miles) north of Los Angeles. One of the world's great seismic faults, the San Andreas extends almost the full length of California & is responsible for major earthquakes. A linear valley has eroded along the main track of the fault, running from top left to bottom right of the photograph. Cultivated fields on the Carrizo Plain are seen at top right.The desolate landscape consists of pressure ridges formed as a result of hundreds of fault movements. Location: Carrizo Plain area, Sec. T32S, R22E.
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