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Rhythmic bedding in road cut near entrance to Valley Park Country Club, on north side of Santa Monica Mountains, Los Angeles County, California. 1931. Plate 13-A, in U.S.Geological Survey Professional paper 212. 1943.
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Specimen showing details of two of the rhythmic beds from the same locality, north side of Santa Monica Mountains, Los Angeles County, California. 1931. Plate 13-B, in U.S.Geological Survey Professional paper 212. 1943.
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Thin section of silicified bed in the Obispo tuff member of the Monterey formation at South Point, about 2 miles northwest of Pismo. San Luis Obispo County, California. 1931.
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Intraformational conglomerate in sandstone and diatomaceous shale beds: south of Girard, on north side of Santa Monica Mountains. Los Angeles County, California. 1931. Plate 17-A, in U.S.Geological Survey Professional paper 212. 1943.
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Close folding of the thin-bedded siliceous rocks of the Monterey formation in sea cliffs about 3 miles northwest of Pismo, San Luis Obispo County, California. 1931. Plate 4-A, in U.S.Geological Survey Professional paper 212. 1943.
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Lenticular opaline chert in diatomite. Santa Barbara County, California. 1931. Plate 6-D, in U.S.Geological Survey Professional paper 212. 1943.
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Small step faults in black opaline chert occurring in diatomaceous rock at Malaga Cove, Palos Verdes Hills, Los Angeles County, California. 1931. Plate 18-D, in U.S.Geological Survey Professional paper 212. 1943.
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Chalcedony and quartz (clear areas) filling and partly replacing calcareous foraminiferal shells in porcelanite; enlarged 66 x. San Luis Obispo County, California. 1931. Plate 8- C, in U.S.Geological Survey Professional paper 212. 1943.
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Intraformational deformation due to slumping of beds during deposition. Los Angeles County, California. 1931. Plate 19-B, in U.S.Geological Survey Professional Paper 212. 1943.
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Small step faults in porcelaneous shale from the middle part of the Monterey formation on Chico-Martinez Creek, Kern County, California. 1931. Plate 18-C, in U.S.Geological Survey Professional paper 212. 1943.
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Diatoms in thin section: from the calcareous concretion shown in photo 25, with clear and more coarsely crystalline calcite filling the interior of diatoms. San Luis Obispo County, California. 1931. Plate 11-A, in U.S.Geological Survey Professional paper 212. 1943.
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Lateral uniformity of bedding in rhythmically bedded chert. San Luis Obispo County, California. 1931. Plate 6-A, in U.S.Geological Survey Professional paper 212. 1943.
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Bentonite bed showing abrupt contacts with porcelaneous rocks, Carmel Valley, Monterey County, California. 1931. Plate 12-A, in U.S.Geological Survey Professional paper 212. 1943.
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Chert beds if irregular thickness, some of which pinch out abruptly, in Claremont Canyon of the Berkeley Hills. Alameda County, California. 1931. Plate 6-C, in U.S.Geological Survey Professional paper 212. 1943.
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Large calcareous concretions in cherty shale in road cut near Hollywood Country Club, on north side of Santa Monica Hills, Los Angeles County, California. 1931. Plate 10-A, in U.S.Geological Survey Professional paper 212. 1943.
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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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Chert pebble conglomerate at contact of Monterey formation and tar sands of basal Pismo formation. San Luis Obispo County, California. 1931. Plate 18-A, in U.S.Geological Survey Professional Paper 212. 1943.
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Crest of small fold in the thin-bedded Monterey formation in road cut on Soto Street, north of Alhambra Avenue, Los Angeles. Los Angeles County, California. 1931. Plate 4-B, in U.S.Geological Survey Professional paper 212. 1943.
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Chert pebble with molluscan borings; showing compaction into the adjacent laminated rock (now chert). Santa Barbara County, California. 1931. Plate 17-D, in U.S.Geological Survey Professional paper 212. 1943.
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Details of rhythmic bedding on a scraped surface in road cut along Van Nuys-Beverly Glen Road: on north side of Santa Monica Mountains, Los Angeles County, California. 1931. Plate 13-C, in U.S.Geological Survey Professional paper 212. 1943.


map background search result map search result map Crest of small fold in the thin-bedded Monterey formation. Los Angeles County, California. 1931. Thin section of silicified bed in the Obispo tuff member of the Monterey formation at South Point. San Luis Obispo County, California. 1931. Intraformational conglomerate in sandstone and diatomaceous shale beds. Los Angeles County, California. 1931. Chert pebble conglomerate at contact of Monterey formation and tar sands of basal Pismo formation. San Luis Obispo County, California. 1931. Small step faults in porcelaneous shale from the middle part of the Monterey formation on Chico-Martinez Creek. Kern County, California. 1931. Intraformational deformation due to slumping of beds during deposition. Los Angeles County, California. 1931. Thin section of silicified bed in the Obispo tuff member of the Monterey formation at South Point. San Luis Obispo County, California. 1931. Chert pebble conglomerate at contact of Monterey formation and tar sands of basal Pismo formation. San Luis Obispo County, California. 1931. Small step faults in porcelaneous shale from the middle part of the Monterey formation on Chico-Martinez Creek. Kern County, California. 1931. Crest of small fold in the thin-bedded Monterey formation. Los Angeles County, California. 1931. Intraformational conglomerate in sandstone and diatomaceous shale beds. Los Angeles County, California. 1931. Intraformational deformation due to slumping of beds during deposition. Los Angeles County, California. 1931.