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Folder: ROOT ( Show direct descendants )

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Three miles northwest of Chattanooga, Tennessee. Exposure of bed in Clinton iron ore. Hamilton County, Tennessee. No date.
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Dissected and wooded plateau in northwestern part of county. Elk County, Pennsylvania. May 6, 1921.
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Minor fold with thrust plane in quartzite-amphibolite sequence. Hammer handle is 38 centimeters long. 70-foot knob, 1.0 mile south, 58 degrees east of intersection of Nooseneck Hill and Chase Hill roads, Hopkinton. Washington County, Rhode Island. October 24, 1963.
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Pegmatite dike in Scituate Granite Gneiss. Dike formed late in the crystallization of the gneiss. Note sharp, straight contacts, but flow structure in adjacent gneiss is deformed. North shore of Wincheck Pond, 0.5 mile west of intersection of Old Rockville and Conochet Roads. Hopkinton. Washington County, Rhode Island. July 11, 1962.
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Very large wrinkles (forming stairway in photograph) in schist in the northern part of the area. The main schistosity and the bedding strike north 60 degrees west and dip 50 degrees southwest (parallel to the crests of the wrinkles). A second schistosity is developed locally that strikes north 67 degrees east and dips 40 degrees northwest (parallel to the axial planes of the Wrinkles). The geologic pick rests on a sinuous quartz vein about 1 inch thick that follows the crenulations of wrinkles. The knobby character of the schist is caused by quartz-sillimanite knots. Custer County South Dakota. Published in U. S. Geological Survey Bulletin 1142-E. 1963.
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Five miles north of Chattanooga Tennessee. Three beds of Clinton iron ore indicated by hammers and bag. Hamilton County, Tennessee. No date.
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Tionesta Creek valley looking south from upland northeast of Balltown. Elk County, Pennsylvania. May 9, 1921.
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Cherty Mississippian limestone bluffs on Duck River on highway between Waverly and Hustburg. Humphreys County, Tennessee. August 18, 1927.
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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. Furnace Creek Formation at the north end of the Black Mountains. View is southwest and west of Zabriskie Point, an overlook by Highway 190 about 3 miles up Furnace Creek Wash from Furnace Creek Inn. The base of the Furnace Creek Formation is at the topographic break between the badlands and the rougher, higher ground in the distance on the left. Light-colored playa beds about 2,500 feet thick extend to the base of a conglomerate which forms the dark cliff at the right. The beds are dipping to the right (north) into the Texas Spring Syncline. The center of the photograph looks west across Death Valley to the Panamint Range at Aguereberry Point; Tucki Mountain on the right....
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Irregular dike of Narragansett Pier Granite in amphibolite. Cut on north side of Westerly-Bradford Road, immediately east of Pound Road. Westerly. Washington County, Rhode Island. October 1963.
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Early mafic dike (?), now amphibolite, in alaskite Potter Hill Granite Gneiss. Pinches and swells from less than one to 13 inches in thickness. Exposed 50 feet along strike. Boudinaged (?) in one place. North 77 degrees east, 57 degrees north. Abandoned quarry, south slope of Bumpin Hill, 0.23 mile north of west end of Spring Brook Avenue. Westerly. Washington County, Rhode Island. October 1963.
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Trap boulders, French Creek Falls. Chester County, Pennsylvania. No date. (Geological Society of America image number 987.)
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North Peak, Chisos Mountains. Chisos Mountains quadrangle. Brewster County, Texas. 1899.
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Panorama with image 049 (right to left). Figuerdo Wash, 4000 feet above Highway 666 at type of locality of Nakaibito formation. Nakaibito formation above and gravels of Gamerco formation below. Mexican Springs Experimental Station. San Juan County, New Mexico. October 1949.
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Porphyritic granite gneiss showing slabby aspect of outcrop which parallels the foliation. Note slightly discordant quartz vein under hammer with ladder fractures. 0.45 mile north, 70 degrees west of benchmark 337 on Woody Hill Road, Exeter. Washington County, Rhode Island. September 1962.
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Drill rig on location approximately 10 miles east of Kermit. Winkler County, Texas. May 1970.
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Drill rig on location approximately six miles northeast of Andrews. Andrews County, Texas. May 1970.
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Nine Point Mesa, showing moving cloud effects. Nine Point Mesa quadrangle. Brewster County, Texas. 1899.
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Elephant Mesa and Whirlwind Plateau, looking north. Brewster County, Texas. 1899.
map background search result map search result map Part of the Barrow unit of the Gubik Formation at Nunavak. Northern Alaska region, Alaska. 1946. Furnace Creek Formation at the north end of the Black Mountains. Death Valley National Park, California. Circa 1960. Panorama with image 049 (right to left). Figuerdo Wash, 4000 feet above Highway 666 at type of locality of Nakaibito formation. San Juan County, New Mexico.1949. Panorama with image 049 (right to left). Figuerdo Wash, 4000 feet above Highway 666 at type of locality of Nakaibito formation. San Juan County, New Mexico.1949. Furnace Creek Formation at the north end of the Black Mountains. Death Valley National Park, California. Circa 1960. Part of the Barrow unit of the Gubik Formation at Nunavak. Northern Alaska region, Alaska. 1946.