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In August 2017, the U.S. Geological Survey acquired high-resolution P- and S-wave seismic data near six Southern California Seismic Network (SCSN) recording stations in southern California: CI.OLI Olinda; CI.SRN Serrano; CI.MUR Murrieta; CI.LCG La Cienega; CI.RUS Rush; and CI.STC Santa Clara (Figure 1). These strong-motion recording stations are located inside Southern California Edison electrical substations, critical infrastructures that provide essential services to millions of customers. The primary goals of the seismic survey were to understand the potential for amplified ground shaking and to evaluate lateral variability in shear-wave velocity at these sites. We deployed up to 88 geophones at 2-m or 4-m...
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Part of the Barrow unit of the Gubik Formation at Nunavak, showing gray blocky sandy silty clay at base, a thin lens of clean yellow sand in the center, and yellow-brown blocky clayey silty sand at top. Barrow district, Northern Alaska region, Alaska. August 10, 1946. Published as figure 26 in U. S. Geological Survey Professional Paper 302-C. 1964.
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Death Valley National Park, California. Thin-bedded middle member of the Bonanza King Formation on the north side of Trail Canyon. View is north. This member, about 600 feet thick, forms a distinctive unit separating massive thick-bedded dolomite comprising the upper and lower members of the formation. Circa 1960. Figure 22, U.S. Geological Survey Professional Paper 494-A.
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This data release contains the concentration results for basic water-quality constituent class parameters (water temperature, pH, turbidity, and specific conductance), total nitrogen, total phosphorous, chloride, and trace elements in surface-water samples collected from two subsites within two vernal pools near Pleasant Grove, New Jersey in 2022-23. In the winter (December 2022 and February 2023) samples were collected at opposing ends of the ponds, or wherever ponding was sufficient for a sample to be taken. An additional sample was collected in July 2023 during the amphibian breeding season. The number of samples collected during each sampling event varied based on water availability and in July 2023 only one...
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Bishop Conglomerate (Oligocene, light pink) unconformably overlying Moenkopi Formation (Triassic, orange and white) near east end of Diamond Mountain. Exposed thickness of Bishop here is 400-500 feet. Sec. 31, T. 2 S., R. 25 E., Uintah County, Utah. June 1984.
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Specimens showing injection gneiss formed by intimate intrusion of quartz biotite schist of the Idaho Springs formation by granite pegmatite; taken from dump of Golden Rod tunnel, Silver Creek. Gilpin County, Colorado. Circa 1911. Plate 10-B, natural size, in U.S. Geological Survey Professional Paper 94. 1917.
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Pleistocene formations in San Pedro: North side of Second Street in block between Pacific Avenue and Mesa Street. Lomita marl conformably overlain by Timms Point silt (on right): both formations unconformably overlain by Palos Verdes sand and nonmarine terrace cover (top). Los Angeles County, California. 1930. Plate 15-A, U.S.Geological Survey Professional Paper 207. 1946.
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Contact between Claggett formation and Judith River beds shown by line of trees, on Birch Creek near mouth. Chouteau County, Montana. 1904. U.S. Geological Survey Bulletin 257, Plate 4-B. 1905.
    map background search result map search result map Specimens showing injection gneiss formed by intimate intrusion of quartz biotite schist of the Idaho Springs formation by granite pegmatite. Gilpin County, Colorado. Circa 1911. Part of the Barrow unit of the Gubik Formation at Nunavak. Northern Alaska region, Alaska. 1946. Bishop Conglomerate (Oligocene, light pink) unconformably overlying Moenkopi Formation (Triassic, orange and white) near east end of Diamond Mountain. Uintah County, Utah. 1984. Thin-bedded middle member of the Bonanza King Formation on the north side of Trail Canyon. Death Valley National Park, California. Circa 1960. Contact between Claggett formation and Judith River beds shown by line of trees, on Birch Creek near mouth. Chouteau County, Montana. 1904. Pleistocene formations in San Pedro. Los Angeles County, California. 1930. High-resolution seismic data acquired at six Southern California Seismic Network (SCSN) recording stations in 2017 Nutrient and trace element results for the U.S. Geological Survey vernal ponds study, Pleasant Grove, New Jersey, 2022-23 Nutrient and trace element results for the U.S. Geological Survey vernal ponds study, Pleasant Grove, New Jersey, 2022-23 Bishop Conglomerate (Oligocene, light pink) unconformably overlying Moenkopi Formation (Triassic, orange and white) near east end of Diamond Mountain. Uintah County, Utah. 1984. Contact between Claggett formation and Judith River beds shown by line of trees, on Birch Creek near mouth. Chouteau County, Montana. 1904. High-resolution seismic data acquired at six Southern California Seismic Network (SCSN) recording stations in 2017 Pleistocene formations in San Pedro. Los Angeles County, California. 1930. Thin-bedded middle member of the Bonanza King Formation on the north side of Trail Canyon. Death Valley National Park, California. Circa 1960. Part of the Barrow unit of the Gubik Formation at Nunavak. Northern Alaska region, Alaska. 1946.