Pg. 363 (fig. 150). Peculiar shale. Shown on structure section as underlying Mahala sandstone and conglomerate (new) and overlying Hunter sandstone and conglomerate. [Age is late Miocene.]
Recognized locally southwest of Chino fault in San Bernadino Co., southern CA.
Source: Publication; US geologic names lexicon (USGS Bull. 1200, p. 2963).
Pg. 521. Peculiar shale (in Puento formation). Micaceous sandy shale with poor stratification. Thickness 657 feet. Upper part of Puente. Measured section noted. Recognized in southern California. Age is late Miocene.
Exposed in Slaughter Canyon in southeastern Puente Hills, between Chino and the Santa Ana River, San Bernardino Co., southern CA.
Source: Publication; US geologic names lexicon (USGS Bull. 1200, p. 2963).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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