| II. Brief
Geologic History of California |
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| • | D. Cenozoic 66 mya - present |
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| – | 1. 40 mya - volcanism -> ash deposits, lava, |
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| other igneous intrusions |
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| – | 2. 30 mya - uplift of batholith |
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| – | 3. 15 mya - 700,000 ya - final uplift,
basin and |
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| range formation, continued subduction (1”/yr) and |
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| northward drift of southern CA (5” /yr) |
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