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| San An·dre·as Fault [ sàn an drày əss fáwlt ] |
noun |
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| Definition: |
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geologic fault zone: a geologic fault zone between two tectonic plates that runs from San Francisco south to San Diego in California. It is an area of frequent earthquakes caused by the plates sliding past each other. Length: 1,000 km (600 mi.)
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| [Because it runs along the San Andreas valley] |
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