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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