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Crystal Pass limestone exposed in a cliff 15 feet high in sec. 30, T.26, S. R. 59 E., south end of Spring Mountains. Clark County, Nevada. December 12, 1924. Plate 5-B in U.S. Geological Survey. Professional paper 162. 1931.
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Thin bedded dolomite of the Goodsprings formation (upper Cambrian) thrust upon the Aztec sandstone (Jurassic) in northeast corner of sec. 21, T. 22 S., R. 58 E. The contact marks the trace of the Keystone thrust. The curve in the trace is due to local irregularities in the surface and to perspective. Clark County, Nevada. Circa 1921. Plate 14-A, with a graphic, in U.S. Geological Survey. Professional paper 162. 1931.
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Ninety-nine Mine, W 1/2 sec. 15, T. 23 S., R. 58 E., the ridge on the left is made up of limestones near the base of the Bird Spring formation which dip eastward (left). The Ninety-nine fault passes through the ravine in the center. Clark County, Nevada. Circa 1921. Plate 31-B in U.S. Geological Survey. Professional paper 162. 1931.
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Beds of the upper part of the Fort Union formation and lower part of the Wasatch formation exposed in the ravine that cuts through Blue Ridge in sec. 5, T. 46 N., R. 97 W. The conspicuous bed near the middle of the section is the massive conglomerate that forms the base of the Wasatch in this region. Hot Springs County, Wyoming. September 29, 1913. Plate 16 in U.S. Geological Survey. Professional paper 145. 1926.
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Aztec sandstone overlying Chinle formation in sec. 22, T. 22 S., R. 58 E., the Aztec sandstone is overlain by thin bedded dolomite of the Goodsprings formation from which it separated by the Keystone thrust fault. Compare with Hewett, photo 365. Clark County, Nevada. Circa 1921. Plate 8-B in U.S. Geological Survey. Professional paper 162. 1931.
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Dolomitized zone (light) in bed of limestone of the Bird Spring formation in sec. 33, T. 25 S., R.58 E., view taken diagonally downward toward a bedding plane. Clark County, Nevada. Circa 1921.
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Trace of the Keystone thrust west of Goodsprings in the SW 1/4 sec. 29, T. 24 S., R. 58 E; on the right crumpled limestones (now dolomitized) of the Bird Spring from (Pennsylvanian): on the left thin bedded dolomite of the Goodsprings formation (Upper Cambrian). The trace is marked by a reddish zone formed by the oxidation of pyrite the curve is due to relief and perspective. Clark County, Nevada. Circa 1921. Plate 14-B, with a graphic, in U.S. Geological Survey. Professional paper 162. 1931.
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Potosi mine, south center of sec. 12, T. 23 S., R. 57 E., the mine workings explore a zone at the base of the Yellowpine limestone. Clark County, Nevada. Circa 1921. Plate 33-B in U.S. Geological Survey. Professional paper 162. 1931.
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Thin bedded dolomites of the upper part of the Goodsprings formation in secs. 28, 26 and 30, T. 24 S., R.58E: due east from the hill (altitude 5,124 feet west of Kirby Wash toward Columbia Pass and Goodsprings. The town is hidden by the hill in the middle distance. Clark County, Nevada. Circa 1921. Plate 5-A in U.S. Geological Survey. Professional paper 162. 1931.
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Unconformity between Meeteetse formation and Fort Union formation in the NE 1/4 sec, 14, T, 50 N., R. 100W. The basal sandstone of the Fort Union forms the crest of the ridge, and the underlying beds are the upper part of the Meeteetse. At this point 1,300 feet of the Lance formation and several hundred feet of the Meeteetse formation have been eroded: forms a panorama with photo 27. Park County, Wyoming. 1912. Plate 13 in U.S. Geological Survey. Professional paper 145. 1926.
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Arrowhead limestone southeast of the Yellow Pine mine in center of sec. 20 T. 54 S., R. 58 E. Clark County, Nevada. December 13, 1924. Plate 6-B in U.S. Geological Survey. Professional paper 162. 1931.
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Supai formation has overlain by the Kaibab limestone east of Cottonwood Pass, in sec. 13 T. 23 S., R. 58 E. The conspicuous sandstone 460 feet thick forms the middle part of the Supai formation. It is overlain successively by gypsum bearing sandy shale at the top of that formation and the two massive beds of limestone of the Kaibab limestone. Potosi Mountain in the distance. Clark County, Nevada. Circa 1921. Plate 8-A in U.S. Geological Survey. Professional paper 162. 1931.
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Seasonal playa caused by damming a small watercourse by sand dunes, NW 1/4 sec. 16, T.52 N., R.101 W. Park County, Wyoming. 1912. Plate 4-C in U.S. Geological Survey. Professional paper 145. 1926.
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Boss mine, NE 1/4 sec. 34, T. 24 S., R. 57 E. The workings explore a crushed zone which, lies between dolomitized limestone of the Monte Cristo formation on the right (east) and similar rocks of the Sultan formation on the left (west). Clark County, Nevada. Circa 1921.
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Potosi Mountain from the northwest, showing faults, in sec. 5. T. 23 S. R. 58 E; showing relation between Sultan limestone and Goodsprings dolomite. Plate 13-B is a detail sketch of this photograph. Clark County, Nevada. Circa 1921. Plate 13-A, with graphics, in U.S. Geological Survey. Professional paper 162. 1931.
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Local anticline lying in the trough of a major syncline, the rocks expose belong to the upper part of the Lance formation: sec. 26, T. 50 N., R. 101W. Park County, Wyoming. 1912. Plate 12-A in U.S. Geological Survey. Professional paper 145. 1926.
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Northwest toward ridge in S. 1/2 sec. 4, T. 23 S., R. 58 E.; the spur is capped by the sandstone at the base of the Bird Spring formation. The prominent cliff is the Yellowpine limestone, the top member of the Monte Cristo limestone, underlain successively by the Arrowhead limestone, Bullion dolomite and the Anchor limestone members. Clark County, Nevada. Circa 1921. Plate 7-A in U.S. Geological Survey. Professional paper 162. 1931.
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Fault in Sec. 2, T. 50 N, R. 100 W. Middle part of the Mesaverde formation (right) abuts against upper part of the Meeteetse formation, horizontal offset 3, 000 feet; stratigraphic displacement 1, 250 feet. Wyoming. 1912. Plate 30-B in U.S. Geological Survey. Bulletin 656. 1917. Plate 7-C in U.S. Geological Survey. Professional paper 145. 1926.
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Massive sandstone of the Lance formation unconformably overlain by gravel of the Wasatch formation at the head of Iron Creek: sec. 8, T. 47 N., R. 100 W. Hot Springs County, Wyoming. 1912. Plate 10-D in U.S. Geological Survey. Professional paper 145. 1926.
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Unconformity between Meeteetse formation and Fort Union formation in the NE 1/4 sec, 14, T, 50 N., R. 100W. The basal sandstone of the Fort Union formWs the crest of the ridge, and the underlying beds are the upper part of the Meeteetse. At this point 1,300 feet of the Lance formation and several hundred feet of the Meeteetse formation have been eroded: forms a panorama with photo 27. Park County, Wyoming. 1912. Plate 13 in U.S. Geological Survey. Professional paper 145. 1926.
map background search result map search result map Local anticline on the upper part of the Lance formation. Park County, Wyoming. 1912. Unconformity between Meeteetse formation and Fort Union formation. Park County, Wyoming. 1912. Unconformity between Meeteetse formation and Fort Union formation. Park County, Wyoming. 1912. Seasonal playa caused by damming a small watercourse by sand dunes. Park County, Wyoming. 1912. Massive sandstone of the Lance formation unconformably overlain by gravel of the Wasatch formation at the head of Iron Creek. Hot Springs County, Wyoming. 1912. Beds of the upper part of the Fort Union formation and lower part of the Wasatch formation exposed in the ravine. Hot Springs County, Wyoming. 1913. Massive sandstone of the Lance formation unconformably overlain by gravel of the Wasatch formation at the head of Iron Creek. Hot Springs County, Wyoming. 1912. Beds of the upper part of the Fort Union formation and lower part of the Wasatch formation exposed in the ravine. Hot Springs County, Wyoming. 1913. Local anticline on the upper part of the Lance formation. Park County, Wyoming. 1912. Unconformity between Meeteetse formation and Fort Union formation. Park County, Wyoming. 1912. Unconformity between Meeteetse formation and Fort Union formation. Park County, Wyoming. 1912. Seasonal playa caused by damming a small watercourse by sand dunes. Park County, Wyoming. 1912.