Pg. 363 (fig. 150). Cubierto shale. Shown on structure section as underlying Hunter sandstone and conglomerate (new) and overlying Blanco shale (new). [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. 1000).
Pg. 521. Cubierto shale (in Puento formation). Thin-bedded gray micaceous clay shale and fine- and medium-grained sandstone. Thickness 864 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: US geologic names lexicon (USGS Bull. 1200, p. 1000).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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