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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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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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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.


    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. 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. Part of the Barrow unit of the Gubik Formation at Nunavak. Northern Alaska region, Alaska. 1946.