The structural and industrial materials of California (1906)
Aubury, Lewis E., 1862- · Sacramento, W. W. Shannon, Superintendent state printing · leaf 310
n oxide. Itlies nearly horizontal and rests on metarhyolite, approximately hori-zontally bedded. Strong sulphur efflorescence occurs in the opening,which is in the neighborhood of basic igneous dikes, mentioned in thedescription of the limestone at this point. (See Shasta County lime-stone, page… … >£; S£Cr/OA/ O/V fVOKTH SIDE OF THE G/i£Y ROCKS ILL. No. 131. 304 STRUCTURAL AXD INDUSTRIAL MATERIALS OF CALIFORNIA. SouthAvest of this a belt of limonite croppings, at least 1000 feet awayfrom the limestone, can be followed over a considerable distance in Sec-tion 3, having a northwesterly…
Building stones · Portland cement · Clay · Mines and mineral resources
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