Calera limestone member of Cahil sandstone, Franciscan Group, Calera Point, San Mateo quadrangle; the limestone contains layers of dark chert.
Dates
Date Taken
1913
Summary
Calera limestone member of Cahil sandstone, Franciscan Group, Calera Point, San Mateo quadrangle; the limestone contains layers of dark chert. San Mateo County, California. 1913. Plate 3 in U.S. Geological Survey. Folio 193. 1914.
Summary
Calera limestone member of Cahil sandstone, Franciscan Group, Calera Point, San Mateo quadrangle; the limestone contains layers of dark chert. San Mateo County, California. 1913. Plate 3 in U.S. Geological Survey. Folio 193. 1914.
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