Bentonite bed in porcelaneous shale, showing squeezing and local thickening of the dark bentonite bed, southeast of Del Monte, Monterey County, California. 1931.
Dates
Date Taken
1931
Summary
Bentonite bed in porcelaneous shale, showing squeezing and local thickening of the dark bentonite bed, southeast of Del Monte, Monterey County, California. 1931. Plate 12-B, in U.S.Geological Survey Professional paper 212. 1943.
Summary
Bentonite bed in porcelaneous shale, showing squeezing and local thickening of the dark bentonite bed, southeast of Del Monte, Monterey County, California. 1931. Plate 12-B, in U.S.Geological Survey Professional paper 212. 1943.
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