pE - Precambrian Rocks
pE - Precambrian Rocks
(Includes Metamorphic and Granitic Rocks)
Approximate Thickness
20,000 feet.
Lithologic Description
Metamorphosed volcanic and tuffaceous sedimentary rocks intruded by diorite and quartz porphyry.
Water-Bearing Characteristics
May yield small amounts of water to wells and springs if fractured.
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