 | | Report (volume) | | Nicholas M. Ratcliffe .................... 79 Scotts Hill Member (new name) of the Cretaceous Peedee Formation...and northwesternmost Massachusetts, p. A 79 Scotts Hill Member of Peedee Formation, southeasternmost North...northwestern Nevada Johnson, M. G., 1977, Geology and mineral deposits of Pershing County, Nevada: Nevada Bur...Silver Cliff and Rosita volcanic centers, Custer County, Colorado: U.S. Geol. Survey Misc. Geol. Inv. Map...Geology of central Peloncillo Mountains, Hidalgo County, New Mexico: New Mexico Bur. Mines and Mineral |  | | Report (volume) | | Pioneer District Montana GEOLOGICAL SURVEY BULLETIN Gold Placer Deposits of the Pioneer District Montana...___ .__________..___-The mountainous part cf the district-_______,. ._.____.-_.______--___ Tertiary intrusive...benchlands . _ _ ..-___________ ._..__._____________ Gold Hill. __.__.. ________________________________________...__-_____----Ballard Hill, French Gul4i, and Jobs Point...... .____--____-_Reservoir Hill ......... ...____________... Geologic map of the benchlands area, Pioneer district, Montana _______________-________---___-__-_-___----__In |  | | Report (volume) | | Hahns Peak and Farwell Mountain Quadrangles, Routt County, Colorado By KENNETH SEGERSTROM and E. J. YOUNG................................................. Quartz diorite gneiss................................................... Altered gneiss with dark-gray quartz and garnet-epidote skarn Pegmatite........................................................... Windy Hill Sandstone Member...............................Hahns Peak and Farwell Mountain quadrangles, Routt County, Colo........................ In pocket FIGURE |  | | Report (issue) | | Arizona—Continued 36°23'4(T ................ ........ Windy Valley ............ ........ ........ 36°27' .....C9 .. CIO Owl Canyon ...... Sheep Mountain Moon Hill ......... Ditch Creek ...... Bellvue .............C30 Tabernash ............. Four Mile Canyon LO7 Hill ............. Burns ..................... Elk Creek...... Granby ........... Boulder .......... LO 7 Hill ....... Leadville I°x2° ......do ............ C31...10 S., 85 W. (un) Highland Peak ........... Red Hill Gap ........... NE'/4 14, 9 S., 77 W ......... |  | | Report (volume) | | its subdivisions are correlated from the Wanakah mine area near Telluride and Ouray into western Black...revised to agree with the formation in the Wanakah mine area. The relationship between the lower part of...measured by Steele (1985), and the section at Cedar Hill 6 mi north of Ouray (sec. 5, fig. 3) was measured...31 9 23 2 7 14 209 15 82 112 5. Cedar Hill-Measured 6 mi north of Ouray, Table 1. Number...disseminated, sparse, well-rounded, medium grains of clear quartz. The coarser grains of the Entrada, which are informally |  | | Report (issue) | | that runs from Lake Mead in Mohave County southeastward to Cochise County. Five locations are listed in table...masses, and commonly crystallizes with calcite, quartz, and pyrite. Fluorspar occurs in Arizona chiefly...feed, and petroleum refining. Silica, quartz, and quartzite Quartz or silica (silicon dioxide, SiO2) is...resistance to corrosion, fracture, and abrasion, quartz persists through weathering and erosion and is...consists of detrital quartz grains held together with silica cement. Most of the quartz and quartzite produced |  | | Report (issue) | | Resource Area (including the Virginia City mining district), Madison and Beaverhead Counties, southwest...Muddy mining district Blacktail mining district Cherry Creek mining district Chinatown mining district...Prairie mining district Medicine Lodge mining district Monida mining district Pony mining district Red Bluff...Bluff mining district Revenue mining district Ruby Mountains mining district Sheridan mining district...district Silver Star mining district Virginia City mining district Mapleton mine Browns Gulch area Alameda-Cornucopia-U |  | | Report (volume) | | Highway 49 (Skyway Road) near town of Abel, Cleburne County. Absaroka Supergroup/Volcanic Supergroup U ABRK03...volcanic field, Yellowstone National Park, Park County, Wyo. Academy Church Shale Member (Springer Formation)...W1/2NW1/4NE1/4SE1/4 sec. 1, T. 3 s., R. 2 E., Carter County. Adams Formation ADMS01 1. Holocene 2. Alaska (SE)...Quadrangle, lat 45° N., long 70°50'-55' W., Oxford County. Adamstown Member (Frederick Limestone) U ADMS06...section W of Lime Kiln in Frederick Valley, Frederick County. Named for town of Adamstown. Adobe Town Member |  | | Report (issue) | | rocks J21 Early Late Jurassic erosion J23 The Windy Hill sea J24 Nearshore sandy rocks J24 Late Jurassic...Rockies and from the craton. During the Late Jurassic Nevada orogeny, extensive mountain building occurred along...fifth and final marine invasion creating the Windy Hill sea. This sea began its retreat during the middle...Morrison Formation -^1 5 ID O Q. Q. Ti" o Windy Hill Sandstone Member Oxfordian S Swift Formation...added two additional members (Pine Butte and Windy Hill Sandstone Members). Pipiringos and O'Sullivan |  | | Journal (article/letter/editorial) | | Stephen B. CASTOR§ Nevada Bureau of Mines and Geology, University of Nevada, Reno Nevada 89557, U.S.A. Abstract...Information The Mountain Pass operation of Chevron Mining Inc. (originally under the name of Molycorp Inc...international competition (mostly from China). Mining and rareearth separations ceased by 2002; however...north of Interstate Highway 15, and the Mineral Hill area, which lies south of the highway (Figs. 1,...also are present in the Mountain Pass and Mineral Hill areas. The composition of the Mountain Pass carbonatite |  | | Journal (article/letter/editorial) | | OLOGIC UNIT u) uJ uJ o9 Upper STAGE Tithonian NEVADA, CALIFORNIA ARIZONA -Salt - "Wash ~ - ' * ~ /Mbr...Eastern facies- 5 c h n e b l y ~ Toroweap Fro. Hill 3ocoolno Ss. Fro. ~ _ . . ~ ~ ~ Esplanade Ss... pl. 15-C). Paleogeographic reconstructions in Nevada and California by Rich (1977) suggest that the...west-central and northwestern Utah and northeastern Nevada (Rich, 1977; Jordan and Douglas, 1980). Some reconstructions...that stretched north-northeastward across central Nevada (McKee et al., 1975, pl. 15-C; Rich, 1977). Two |  | | Journal (issue) | | petrography Windy Hill centre 2 Hurricane Hill centre 9 Gades Bay centre 11 Saddle Hill centre 12 Round...Round Hill-Red Cliff centre 14 Butler's Mountain volcanics 15 Nevis Peak volcano 15 Cognate xenoliths Notes...highly altered rocks of Nevis Farrn Estate 28 Saddle Hill 28 Belmont Estate 29 Notes on the mineralogy of...3 Pyroxene-dacites, Windy Hill centre 10 Opacite-pyroxene-dacites, Hurricane Hill centre 10 Dacites, Gades...Bay centre 12 Low-silica pyroxene-dacites, Saddle Hill centre 13 Hornblende-pyroxene-dacites, Butler's |  | | Report (issue) | | Assessment of the Tonopah 1° by 2° Quadrangle, Nevada by Greta J. Orris and Frank J. Kleinhampl U.S...Tonopah 1° x 2° quadrangle, Nevada, covers over 19,000 km2 in central Nevada. The region is largely dominated... Location of the Tonopah 1° by 2° quadrangle, Nevada x / 7 v* Most of the granitoid rocks are...small Triassic to early Jurassic granodiorite and quartz monzodiorite bodies in the southwest part of the...porphyries occur in the San Antonio Range, Rock Hill, and Paradise Ranges. The Hall porphyry molybdenum |  | | Book | | the Peak District 2 Mining and Quarrying 4 Ornamental Stone 8 Minerals of the Peak District 10 Selected...1 18 Castleton 2 21 Calton Hill 23 Ecton Hill 25 Masson Hill 27 Ashford in the Water 29 Brassington...rather, millenia. For it is difficult in the Peak District to find a viewpoint that does not include a relic...around a ruined mine head-gear and the rabbits scurry over a grasscovered mound of mining waste. And the...unless you are experienced, do not venture into old mine workings. That inviting adit may lead the unwary |  | | Report (volume) | | The Wallapai Mining District Cerbat Mountains Mohave County Arizona GEOLOGICAL SURVEY BULLETIN 978-E...978-E The Wallapai Mining District Cerbat Mountains Mohave County Arizona By MCCLELLAND G. DINGS CONTRIBUTIONS...shoots.___________________________________________ Quartz-sulfide stockwork deposit________________________---_..._____ Champion mine.__--_--___________-____-_____ ___----______-___ Emerald Isle mine.______________...Descriptions of mines and prospects Continued Golconda mine-_______________________________________________ |  | | Report (volume) | | Member__-__-___--------_ Pine Butte Member_____________ Windy Hill Sandstone Member_ __ Stratigraphic sections_____-___--_...Canyon Springs Sandstone, Lak(?), Pine Butte, and Windy Hill Sandstone Members. The Canyon Springs is equivalent...base of member (feet) Fossil identification Windy Hill Sandstone Member [Ostracodes, identified by...Sandstone, Lak, Pine Butte, Redwater Shale, and Windy Hill Sandstone Members (Pipiringos, 1968, p. D18-D25)... the Pine Butte, the Redwater Shale, and the Windy Hill Sandstone Members. Mapping by W. J. Hail, Jr |  | | Report (issue) | | in the San Francisco volcanic field in Ooconino County was studied. Over most of the area the Devonian...calcispheres are found locally. Many beds contain detrital quartz grains and secondary chert. Both the fetid and...and layers, spherulitic replacements, authigenic quartz, and as replacement of fossil skeletons, especially...replacement (by calcite or dolomite) of detrital quartz grains. This process is reversible or cyclical...in northern Gila County, southwesternmost Navajo County, northeastern Yavapai County, and southernmost |  | Richard, S.M., Priznar, N., Miksa, E., Spencer, J., Nations, D. (2000, November) Geology and archaeology of the Theodore Roosevelt Dam area and Tonto National Monument. Guidebook. Arizona Geological Society | Report (issue) | | north-south zone that crosses the basin in the Windy Hill area. Elevation of the water level in Theodore...lower Mescal Limestone in the hills north of Windy Hill, and Dripping Spring Quartzite in the southeastern...and southwest-dipping correlative strata in the Windy Hill and southwestern Sierra Ancha are. The timing...mudstone and conglomerate in the basin east of Windy Hill may be younger than similar strata in the northwestern...Sierra Ancha Wilderness and Salome Study Area, Gila County, Arizona: U. S. Geological Survey MF MF-I I62-A |  | | Report (issue) | | in the Pacific Coast region from California and Nevada to Washington————————————— Index map of Jurassic...region in California, Nevada, and western to eastcentral Oregon: A. Western Nevada and eastern California...east in Nevada. The deepest part of the sea probably trended northward through westernmost Nevada into eastern...that included much volcanic material, except in Nevada. Deposition of beds of Bathonian Age in the Pacific...Utah. In this sea was deposited a thin unit (Windy Hill Sandstone Member of the Sundance Formation) of |  | | Report (volume) | | = Geology of the Flint Hill Quadrangle, Fall River County, South Dakota CJm/ _^^^ GEOLOGICAL SURVEY...Commission 1063-M Geology of the Flint Hill Quadrangle, Fall River County, South Dakota By HENRY BELL III and...____________________ 563 Structure in the Flint Hill quadrangle________--__--____---_____ 564 in IV...PLATE 32. Geologic map and sections of the Flint Hill quadrangle. __ In pocket 33. Diagram showing correlation...FIGURE 92. Index map showing location of the Flint Hill and other !%minute quadrangles mapped in the southern |  | | Journal (issue) | | deer in Nevada, tentatively set by State fish and game commission, subject to revision by county commissioners...commissioners. 1-Nov. 15 Imperial county dove season. 3-4 Feast Day of St. Francis of Assisi (Patron Saint...Southwest District convention Kiwanis International, at Albuquerque; Frank Lawrence, Gallup, district governor...partridge) in Nevada, tentatively set by State fish and game commission, subject to revision by county commissioners...Federation of Labor, at Yuma, Arizona. 21 University of Nevada Wolves to celebrate Homecoming Day at Reno. 21 |  | | Journal (article/letter/editorial) | | Morrison Formation (Upper Jurassic), Western Interior, USA Stan P. Dunagan a,*, Christine E. Turner b a Department...Martin, TN 38238, USA b U.S. Geological Survey, Box 25046, MS-939, Denver, CO 80225-0046, USA Abstract During...(Vancorum, CO), 25 (Lisbon Valley, CO), 26 (Norwood Hill, CO), 27 (Big Gypsum Valley, CO), 28 (Montezuma...‘‘lower’’ Morrison and Colorado Plateau equivalents (Windy Hill, Tidwell, Salt Wash, Junction Creek, and lower...b), and Turner and Fishman (1991). above the Windy Hill Member and equivalents, chiefly in the ‘‘lower’’ |  | | Report (volume) | | mineralisation 10 Geophysical surveys around Talnotry mine, Kirkcudbrightshire, Scotland 39 11 A study of...Introduction 1 1 1 Stratigraphy 1 Structure 3 Mining and mineralisation Geology 3 Geochemical surveys...Clouds, Birkett Common, Crosby Garrett Fell and Windy Hill. VLF-EM and IP surveys at Stennerskeugh Clouds...Brownber Pebble Beds, an oolitic limestone with quartz pebbles. The lime- GEOLOGY OF RAVENSTONEDALE...is not exposed to the east of the Dent Fault. MINING AND MINERAUSA TlON Within the area investigated |  | | Report (issue) | | 10 12 13 1 . Asbestos ore 2. Lead ore, Balmat mine, N. Y. 3. Chromite-chromium ore, Washington 4....matrix consisting principally of potassium feldspar, quartz, and iron and manganese oxides. Total rare-earth...based on what cutoff grade may be needed during mining. The size is large as the 2,000 ppm total rare-earth...deposits, their large size and relative cheapness of mining make them an important future resource. Vein deposits...Gangue minerals are commonly potassium feldspar, quartz, or cristobalite intermixed with varying amounts |  | | Report (issue) | | the confluence of Horton and Tonto Creeks, Gila County, Ariz_______________-_________________________...Canyon area, Merriam's Devils Gate formation of Nevada, Stevenson's Sly "Gap formation and the Percha...the State, chiefly in Gila County and the adjacent part of Navajo County (figs. 8, 9). This area lies...Troy quartzite. In the northwestern part of Gila County, the Tapeats sandstone of Cambrian age overlies...River 2 Salt River 3 Flying "V" Canyon 4 Horseshoe Mine Road 5 Prochnow Mines 6 Rockhouse Butte 7 Salt River |
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