- Usage in publication:
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- Gabilan Mesa quartz diorite
- Modifications:
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- Original reference
Summary:
Pg. 9. Discussed in paper dealing with potassium-argon (K-Ar) age determinations. Age of 83.8 Ma years given [Cretaceous].
Occurs in Gabilan Mesa, which covers an area of approx. 250 sq mi east of Salinas Valley, west-central CA. Oldest sedimentary rock resting in depositional contact on flanks of mesa is Miocene in age. Dated specimen collected in sec. 29, T. 17 S., R. 7 E., on road to Pinnacles National Monument, 3.2 mi east of its junction with Metz Road.
Source: US geologic names lexicon (USGS Bull. 1200, p. 1449).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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