GEOLEX

Summary of Citation: San Pablo

Publication:
Merriam, J.C., 1898, The distribution of the Neocene sea urchins
   of middle California and its bearing on the classification
   of the Neocene formations: University of California Publications
   in Geological Sciences, v. 2, no. 4, p. 109-118

Usage in Publication:
San Pablo formation

Modifications:	Geologic Province:	Dominant Lithology:
Named Biostratigraphic dating	California Coast Ranges province	Sandstone Tuff Ash

Summary:
San Pablo formation occurs on south shore of San Pablo Bay. Is series of marine sandstones with tuffs and ashes prominent in upper portion. Is nearly 1500 ft thick. Characterized by abundant ASTRODAPSIS and SCUTELLA (CLYPEASTER) GABBI [sea urchins]. At San Pablo Bay beds form wide syncline, northern limb of which rests on upper portion of Contra Costa County Miocene with no distinct unconformity. Age is considered Miocene, probably middle Neocene.

Summary of Citation: San Pablo

Publication:
Arnold, R.A., 1906, The Tertiary and Quaternary pectens of
   California: U.S. Geological Survey Professional Paper, 47,
   264 p.

Usage in Publication:
San Pablo formation*

Modifications:	Geologic Province:	Dominant Lithology:
Adopted	California Coast Ranges province

Summary:
San Pablo formation of Merriam (1898) is adopted. Type locality designated on south side of San Pablo Bay near Union Oil refinery [and town of Rodeo], Contra Costa Co, CA. At type consists of sandstones, tuffs, and ashes approximately 1500 to 2000 ft thick. Apparently conformably overlies Contra Costa County Miocene. Equivalents [in sense units contain ASTRODAPSIS and SCUTELLA (CLYPEASTER) GABBI echinoderms] of San Pablo formation unconformably overlie Monterey shale in Salinas Valley (= Santa Margarita formation) and in many other places. Extensive list of late Miocene fossils (echinoderms, pelecypods, and gastropods) included.

Summary of Citation: San Pablo

Publication:
Murata, K.J. and Whiteley, K.R., 1973, Zeolites in the Miocene
   Briones Sandstone and related formations of the central Coast
   Ranges, California: U.S. Geological Survey Journal of Research,
   v. 1, no. 3, p. 255-265

Usage in Publication:
San Pablo Group*

Modifications:	Geologic Province:	Dominant Lithology:
Revised	California Coast Ranges province

Summary:
San Pablo Group in Contra Costa, Alameda, and Santa Clara Cos includes (ascending); Briones, Cierbo, and Neroly Sandstones, all of late Miocene age.

Summary of Citation: San Pablo

Publication:
Fox, K.F., Jr., 1983, Tectonic setting of late Miocene, Pliocene,
   and Pleistocene rocks in part of the Coast Ranges, north of
   San Francisco, California: U.S. Geological Survey Professional
   Paper, 1239, 33 p., (incl. geologic map, scale 1:285,000)

Usage in Publication:
San Pablo Group*

Modifications:	Geologic Province:	Dominant Lithology:
Areal limits	California Coast Ranges province

Summary:
San Pablo Group and its three sandstone formations recognized in southeast Sonoma Co, CA. Age given as late Miocene.

Summary of Citation: San Pablo

Publication:
Bartow, J.A., 1985, Revisions in the Tertiary stratigraphy of
   the east flank of the Diablo Range, central California, IN
   Stratigraphic notes, 1984: U.S. Geological Survey Bulletin,
   1605-A, p. A1-A6

Usage in Publication:
San Pablo Formation*

Modifications:	Geologic Province:	Dominant Lithology:
Areal limits	California Coast Ranges province

Summary:
San Pablo Formation of Anderson and Pack (1915, USGS Bull. 603) is here geographically restricted from the area south of Hospital Creek on east flank of Diablo Range. Its rocks are here reassigned to Poverty Flat Sandstone (new) of late middle and late Eocene age, Valley Springs Formation of late Oligocene and early Miocene age, and Neroly Sandstone of late Miocene age.