The structural and industrial materials of California (1906)
Aubury, Lewis E., 1862- · Sacramento, W. W. Shannon, Superintendent state printing · leaf 188
e limestoneoccurs in regular beds from 1 to 4 feet thick, which dip to the north atan angle of 40 degrees. It is partly crystallized and very fossiliferous,being composed largely of a mass of broken shells, not many of whichare preserved entire. It is probably of Lower Cretaceous age. The limestone… … (ISl) 182 STRUCTURAL AND INDUSTRIAL MATERIALS OF CALIFORNIA. limestone at the quarry. Steam drills and d3namite are used in quarry-ing the limestone, and a steam shovel for loading the clay is soon tobe added. A fault-plane runs through the quarry and shows quite prominentlyon the south wall, where…
Building stones · Portland cement · Clay · Mines and mineral resources
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