 | | Report (issue) | | Mineral Deposits of the Poncha Springs NE Quadrangle, Chaffee County,Colorado By RALPH E. VAN ALSTINE... 626 Prepared in cooperation with the Colorado State Mining Industrial Development Board UNITED STATES...ash-flow tuff ______________________ _ Nathrop Volcanics _________________________ _ Browns Canyon Formation...Van Alstine and Doak C. Cox _________ _ Colorado-American mine ______________ -_Delay adit and Lloyd shaft...--_-----_Manganese Hill and Chimney Hill mines_Last Chance mine _________________ -_-_Other fluorspar deposits ________ |  | | Report (issue) | | Index of the Geology of the Creede Mining District and Vicinity Colorado By Daniel O. Hayba and Constance...bibliography and index of the geology of the Creede mining district and vicinity was prepared in support of the...information pertaining to the geology of the Creede district. Thus, references range from papers dealing entirely...also PALEONTOLOGY and PALEOENVIRONMENT) GEOLOGY, District GEOLOGY, Regional GEOMORPHOLOGY GEOPHYSICAL SURVEYS...Stable and Radiogenic MAPS MINERAL DEPOSITS, Creede district (see also FLUID INCLUSIONS; ISOTOPES; and ALTERATION) |  | | Book (edition) | | plutonic suite granite OADSIDE “%_ JrEoLocy of COLORADO SECOND EDITION Halka Chronic and Felicie Williams...ion Data Chronic, Halka. Roadside geology of Colorado.—2nd ed. /Halka Chronic and Felicie Williams....0-87842-447-4 (pbk. : alk. paper) 1. Geology—Colorado. 2. Roads—Colorado. I. Williams, Felicie, 1953- II. Title...NEW os °° of and Roads Geology Roadside of Colorado. sections =: S S Can Black Durango NP Verde...History—The Underlying Theme Comingto Terms 4 4 Colorado through the Ages 9 The Final Touch = 17 Gold |  | | Book (edition) | | —Roadside Geology Series $14.00 RCMDSIDE EOLOGY of COLORADO Halka Chronic MAP SYMBOLS SEDIMENTARY ROCKS...Dawson ill Formations Undivided Tertiary E3 z Cfl Browns Park Formation Third phase volcanics Triassic-Jurassic...gneiss Q. Gneiss & schist roadside geology of Colorado Halka Chronic MOUNTAIN PRESS PUBLISHING CO. Missoula...Roadside Geology of Colorado Bibliography: p. 1. Geology—Colorado—Guide-books. Colorado. I. Title. QE91.C49...59806 (406) 728-1900 Colorado’s colorful scenery springs from colorful geology. Its broad eastern plains |  | | Report (issue) | | index. Supt. of Docs. no.: I 19.16: 1. Volcanic ash, tuff, etc.-Idaho. 2. Rhyolite-Idaho. I. Mcintyre, David...Problem of recognizing high-temperature, flowlayered welded tuffs . . . . . . Significance of basal flow breccia...adjacent areas . Rocks of De Lamar and Flint Creek Tuff of Flint Creek . . . . . . . . . . . . . . Rhyolite...Gulch Tuff Member of the Sucker Creek Formation Rocks of Juniper Mountain volcanic center Tuff of Mill...Mountain Tuff . . . . . . . . . . . . . . . Areal distribution of the Swisher Mountain Tuff and descriptions |  | | Journal (article/letter/editorial) | | The last Wild West Silver Mining Camp in Colorado T he Creede mining district, located at a lofty elevation...and rugged San Juan Mountains of southwestern Colorado. Although silver was discovered in the area in...Amethyst, Last Chance, Commodore, and Bachelor. The mining encampment grew from a small settlement to a town...assortment of Wild West characters who gravitated to mining boom towns. In 1890 the settlement was unofficially...into one of the last notorious Wild West silver mining camps that brought fortune to some and financial |  | | Report (issue) | | Petes Canyon sequence ___ _____ _____ ___ August Canyon sequence ______ ___ _____ Mill Canyon sequence...sequence __ ___ ___ ______ __ June Canyon sequence __ ___ _______ __ __ Age and correlation _____ ____ ____...Hanson Creek Formation _______ _____ _____ _ Caesar Canyon Limestone of Kay and Crawford (1964) ____ ________...__________ __ ______ Unnamed limestone in Mill Canyon sequence ____________ _____ _____ __ __________...overlying the Antelope Valley Limestone in June Canyon sequence_ _____ Silurian System __ ____ ______ |  | | Report (issue) | | Miocene diatomite, Trinity Pass Area, Pershing County, Nevada By J. THOMAS NASH* Open-File Report 95-84...diatomite deposits in the Trinity Pass area, Pershing County, Nevada .........................................Stratigraphic column for the Trinity Pass area, Pershing County, Nevada .........................................diatomite resources in the Trinity Pass area, Pershing County, Nevada ........................... 13 Plate 1...geologic map of the Trinity Pass area, Pershing County, Nevada ................................... in |  | | Report (issue) | | of The Geological Society of America Boulder, Colorado, 1973 Edited by BRUCE F. CurTIS 1975 Copyright...SOCIETY OF AMERICA, INC. 3300 Penrose Place Boulder, Colorado 80301 24 AUG 1990 The Memoir series was originally...northwestern Colorado and its implications concerning tectonism and the origin of the Colorado River system...Cenozoic sedimentation and deformation in northern Colorado and AGIOS ATCAGws jaceeet ty pes wien ano os Kar...helt 249 Neogene tectonism in south-central Colorado... a 2) 7 min 4 am ie a - =a, geek @a |  | | Book | | Morrison Formation PRECAMBRIAN San Rafael Group Glen Canyon Group pe Precambrian granite Chinle Formation...sandstone dwarf 800-year-old ruins at White House in Canyon de Chelly. preface Writing this book has been... the Central Highlands (Chapter III), and the Colorado Plateau Province of northern Arizona (Chapter............ eee eeeseeeeeeees FU Interstate 40: Colorado River to Kingman................. 83 U.S. 60/89:...Lok 155 160 165 168 1 SCENIC WONDERLAND — the Colorado Plateau Introductionwed4 s..0.:-ccet. eee ee |  | | Book | | Slide Mountain 49 6. Fire Down Below Steamboat Hot Springs 61 7. Of Lava and Lahars Mount Rose /71 8....193 . Open Pits and Altered Rock Robinson Mining District 203 . Island in the Desert Wheeler Peak 213... We were looking for trilobites but found that mining had long since destroyed the outcrop in question...as a tribute to Austin’s early days as a gold-mining boomtown. —Dave Futey photo GEOLOGY OF CENTRAL...perennially snow-covered peaks and saline lakes, hot springs and rushing streams, volcanoes and faults, and |  | | Report (volume) | | east-west, northwest, and northeast within the district. Hawkins (1982) postulated that the east-west...faults during the basin-and-range event. The Snow Canyon fault, one of the major east-west-trending faults...faults, occurs just north of the Jerritt Canyon window (fig. 57). Similar but smaller scale east-west-trending...east-west-trending faults in the Enfield Bell mine are are the Marlboro Canyon, Bell, and Ridge faults (fig. 58)...upper- and lower-plate rocks in the Jerritt Canyon district is thought to be a high-angle fault. Exposure |  | | Report (issue) | | From the Lower Salmon River and Northern Hells Canyon Area, Idaho, Oregon, and Washington, by S. P. Reidel... . 213 Cenozoic Stratigraphy of Western Owyhee County, Idaho, by E. B. Ekren, D. H. McIntyre, E. H. Bennett... . . . 237 The Cougar Point by Bill Bonnichsen Tuff; Southwestern and G. P. Citron Idaho and Vicinity.... .. Pre-Cougar Point Tuff Volcanic Rocks Near the Idaho-Nevada Owyhee County, Idaho, by John Bernt and...of Tertiary-Quaternary Volcanic Rocks in Caribou County, Idaho, by D. W. Fiesinger, W. D. Perkins, and |  | | Journal (issue) | | 10 Jim Dollar's Lost Mine By KENNETH MARQUISS To the Editor: A friend of mine recently returned from... too, that they were letting water out of Glen Canyon Dam because Lake Mead is so low. I am planning...launching sites write or call the following: Glen Canyon National Recreation Area Headquarters, Page, Arizona...Arizona, Area Code 602, 645-2472; Art Greene Canyon Tours, Wahweap Lodge and Marina, P. O. Box 1356, Page...Blanding, Utah. Phone 678-2281; Gaylord Staveley, Glen Canyon Boating (Castle Butte, Hite) P.O. Box 156, Mexican |  | | Report (issue) | | Lake Springs at the southwestern margin of the Great Salt Lake Desert, Tooele County, Utah. Springs at...at and near Blue Lake Springs discharge 23.44 cubic hectometers of water per year. Carbonate rocks of Paleozoic...Blue Lake Springs at the southwestern margin of the Great Salt Lake Desert, Tooele County, Utah. PLATES...Map showing general locations of the principal mining districts, Bonneville region, Utah and Nevada....Photograph northward from the House Range to Fish Springs Range ........................................ |  | | Journal (article/letter/editorial) | | Porphyry Copper Center in the Superior (Pioneer) District, Arizona SCOTT L. MANSKE† Independent Consultant...has been discovered in the Superior (Pioneer) district of east-central Arizona, lying under thick Tertiary...Conglomerate and the Miocene (18.6 Ma) Apache Leap dacite tuff. The attitude of the basal Tertiary beds shows that...lies within the well-known Superior (Pioneer) district, a base and precious metals camp that has been...approximately 1.5 km south-southeast of shaft 9 of the Magma mine and 120 km north of the city of Tucson, Arizona |  | | Report (issue) | | MILLARD COUNTY, UTAH by Lehi F. Hintze and Fitzhugh D. Davis Cover photo: East face of the Canyon Mountains...detailed studies of these resources including mining district and field studies; develops computerized resource...Printed on recycled paper 3/03 Geology of Millard County, Utah iii Frontispiece. Northern House Range...as viewed looking north from Tatow Knob. Fish Springs Range on central skyline. Small darker hill at...which Sand Pass lies between the two ranges. Fish Springs Flat is the white desert on the right beyond the |  | | Report (issue) | | regional relations of geologic units in a complex mining district \ UNITED STATES GOVERNMENT PRINTING OFFICE...Cambrian System ______________________ _ Scott Canyon Formation ___________ _ Ordovician System _____________________..._______________ _ Jory Member _________________ _ Trenton Canyon Member _______ _ Mill Can you Member __________...Volcanic rocks of Tertiary age ... ______ - _--- -- Welded tuff and associated pyroclastic Page rocks-----...-------------- 64 65 69 Quartz latite welded crystal tuff __ -- __ - __ _ BasaU ________________________________ |  | | Report (issue) | | endorsement by the U.S. Government. 'Denver, Colorado 1995 CONTENTS Geoenvironmental models of mineral..... 70 Porphyry Cu deposits, by L.J. Cox, M.A. Chaffee, D.P. Cox, and Douglas P. Klein .................mineralized areas prior to mining, and conditions that result from mining and mineral processing. Other...as climate, and anthropogenic factors (including mining and mineral processing methods) mostly modify the...exploration, and assessment of abandoned mine lands and mine-site remediation. This compilation presents |  | | Book | | mid-1957, of vvhich 70% is in New Mexico, 16% in Colorado, Utah, and Arizona, and 8% in Wyo1ning. These...doubtless the U.S.S.R., likewise established uranium mining industries. These efforts in the Reid and in the...siliceous and Ruoritic types, and the oxidized Colorado Plateau deposits are desc1ibed vvith those that...origin, e.g., Blind River, \i\litwatersrand, and Colorado Plateau. The writer has attempted to present equitably.... . . . . . . . . . . . . . . . . . . . . . . Colorado Plateau . . . . . . . . . . . . . . . . . . . |  | | Journal (issue) | | ....755 by D. Trinchillo Sapat Gali, Mansehra District, Khyber Pakhtunkhwa Province, Pakistan .........Wilson Black topaz from the Thomas Range, Juab County, Utah .....................805 by A. Sikorski &...“King of Kashmir”), 80 cm, from the Biangsapi Gon mine near Nyet Bruk, Pakistan. Private collection; James...$324/three years, (Canada) $196/one year, (outside USA other than Canada) $275 for one year Subscription...market, including red wulfenite from the Red Cloud mine in Arizona, epidote from Prince of Wales Island |  | Parker, Don F., White, John C., Ren, Minghua, Barnes, Melanie (2017) Basement control of alkalic flood rhyolite magmatism of the Davis Mountains volcanic field, Trans-Pecos Texas, U.S.A. Lithos, 292. 234-249 doi:10.1016/j.lithos.2017.09.011 | Journal (article/letter/editorial) | | lava also occurs in slightly younger units (Adobe Canyon Rhyolite, ~125 km3, 37.1 Ma), Sheep Pasture Formation...Tule Mountain Trachyandesite (~33 Ma), the Pine Canyon caldera of the Chisos Mountains (~33-32 Ma) and...phase basaltic lavas (~25-17 IP Ma) of the Closed Canyon Formation of the Bofecillos Mountains were erupted...pantelleritic Gomez Tuff (~220 km3; 37.33 + 0.07 Ma), volcaniclastic “bedded tuff” units of complex internal...(see Appendix A, this report) to agree with a Fish Canyon sanidine standard of 28.305 + 0.036 Ma (Renne et |  | | Report (volume) | | 250-12,460 ft, sec. 14, T. 45 S., R. 27 E., Lee County, Fla. Named for the nearby Able Canal. The Able...H-20, northwest of Wattsville, northern Accomack County, Va. Reference sections: facies E and F, sand pits...Wattsville, Persimmon Point, and Accomack, Accomack County, Va. The informal Accomack beds of Mixon and others...and west of the Ames Ridge shoreline in Accomack County, Va., and are well developed from Wallops Station...Turnpike exchange, Annandale quadrangle, Fairfax County, Va. The Accotink Schist, here named, is the lower |  | | Report (volume) | | H. MclNTYRE Papers presented at the Northwest Mining Association Convention, Spokane, Washington, Dec...bulletin ; 1658A-S) "Papers presented at the Northwest Mining Association Convention, Spokane, Washington, Dec...Congresses. I. Mclntyre, David H. II. Northwest Mining Association (U.S.). Convention (1983 : Spokane...Volcanic Subsidence in the Custer Graben, Custer County, Idaho, by D. H. Mclntyre and K. M. Johnson. 109...Douglas-Fir at the Red Mountain Stockwork, Yellow Pine District, Idaho, by J. A. Erdman, B. F. Leonard, and D |  | | Book | | Halka. Time, rocks, and the Rockies. 1. Geology—Colorado—Rocky Mountain National Park— Guide-books. 2... 34 Granby to Rocky Mountain National Park .. Colorado 7 Lyons to Estes Park......... III Roadside Geology:...Lake Trail.. Chasm Lake Trail Lawn Lake Trail Colorado River—Little Yellowstone Trail .. Glossary \snsitieens:...geologic map in Chapter II is derived from the map of Colorado published by the USGS in 1979, with changes suggested...theses by University of Colorado, Colorado State University, and Colorado School of Mines graduate |
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