California has a very complex and varied geology. Posted below are geologic reports, bulletins and maps to help you understand where you are most likely to find the gold.

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Geologic Map of California
USGS, 1966, Scale 1:2,500,000

This is a basic Geologic Map of the entire State of California. This is a good place to start to get an overview of the basic geologic make-up of the state.

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