 | | Report (issue) | | the Aspen 15-minute Quadrangle, Pitkin and Gunnison Counties, Colorado By BRUCE BRYANT GEOLOGICAL SURVEY...PROFESSIONAL PAPER 1073 A study of an area at the intersection of the Colorado mineral belt with the west flank...the Aspen 15-Minute quadrangle, Pitkin and Gunnison Counties, Colorado (Geological Survey Professional...Bibliography: p. 123 1. Geology Colorado Aspen region. 2. Mines and mineral resources Colorado Aspen region. I. Title...................................... Peerless Formation .................................. Manitou Dolomite |  | | Report (volume) | | State Bridge Formation in the Woody Creek Quadrangle, Pit kin and Eagle Counties, Colorado By VAL L. FREEMAN...__________________________--_---_-_-____--__-Maroon Formation-_______________________________________________...Fryingpan River.______________________________ Sloane Peak Member_______________---__-_-__-_--------_--_-_Coarse...central Colorado showing locations of the stratigraphic sections of the State Bridge Formation and of...STATE BRIDGE FORMATION IN THE WOODY CREEK QUADRANGLE, PITKIN AND EAGLE COUNTIES, COLORADO By VAL L. FREEMAN |  | | Report (issue) | | Paleozoic Rocks in the Upper Colorado River Basin in Arizona, Colorado, New Mexico, Utah, and Wyoming^...Paleozoic Rocks in the Upper Colorado River Basin in Arizona, Colorado, New Mexico, Utah, and Wyoming...GELDON REGIONAL AQUIFER-SYSTEM ANALYSISUPPER COLORADO RIVER BASIN, EXCLUDING SAN JUAN BASIN U.S. GEOLOGICAL...Paleozoic Rocks in the Upper Colorado River Basin in Arizona, Colorado, New Mexico, Utah, and Wyoming...p. cm. (Regional aquifer-system analysis Upper Colorado River Basin, Excluding the San Juan Basin) (U |  | | Report (issue) | | 15-Minute Quadrangle, Eagle and Summit Counties, Colorado By OGDEN TWETO and THOMAS S. LOVERING G E 0 L...PAPER 9 56 Prepared in cooperation with the Colorado Mining Industrial Development Board Geology of...district and the Vail recreational area, with emphasis on the Minturn Formation of Pennsylvanian age UNITED...Quartzite ...... . ....................... . Peerless Formation ............................. . Ordovician System..................................... . Parting Formation .......................... . Dyer Dolomite .. |  | | Report (volume) | | MINERAL DEPOSITS OF THE SNOWMASS MOUNTAIN AREA GUNNISON COUNTY, COLORADO BY JOHN W. VANDERWILT Prepared in...cooperation with the STATE OF COLORADO, COLORADO METAL MINING FUND, COLORADO MINING ASSOCIATION and GEOLOGICAL...GEOLOGICAL SURVEY BOARD OF COLORADO UNITED STATES GOVERNMENT PRINTING OFFICE WASHINGTON : 1937 For sale...____________________________________________ Devonian (Chaffee formation) _ ____________________________ . Devonian-Mississippian...(Hermosa? formation) ________________________ Permian and Pennsylvanian (?) (Maroon formation) ___________ |  | | Report (volume) | | Ranger District of the Arapaho National Forest, Colorado U.S. GEOLOGICAL SURVEY BULLETIN 2035 Mineral...Ranger District of the Arapaho National Forest, Colorado By MARGO I. TOTH, ANNA B. WILSON, THERESA M. COOKRO...Ranger District of the Arapaho National Forest, Colorado / by Margo I. Toth ... [et al.]; with a section...mineral resources Colorado White River National Forest. 2. Mines and mineral resources Colorado Arapaho National...National Forest. 3. Geology Colorado White River National Forest. 4. Geology Colorado Arapaho National Forest |  | | Report (issue) | | BASIN AND NORTHERN ASPEN SUB-BASIN, NORTHWEST COLORADO by Samuel Y. Johnson U.S. Geological Survey,...MS-916, Box 25046, Denver Federal Center, Denver, Colorado 80225 Open File Report 87-286 This report is...Basin and northern Aspen sub-basin, west-central Colorado. Strata investigated include the Eagle Valley...Valley Evaporite (upper part), the Maroon Formation, the School house Tongue of the Weber Sandstone, and the...of the Maroon Formation. The contact between the Eagle Valley Evaporite and Maroon Formation is markedly |  | | Report (issue) | | Resources of the Bull Gulch Wilderness Study Area, Eagle County, Colorado U.S. GEOLOGICAL SURVEY BULLETIN 1717-C...place. Assignment of high resource potential to an area requires some positive knowledge that mineral-forming...processes have been active in at least part of the area. UNKNOWN mineral resource potential is assigned...for a specific type of resource in a well-defined area. Levels of Certainty t U/A HIGH o CL UNKNOWN...the San Isabel National Forest, south-central Colorado: U.S. Geological Survey Bulletin 1638, p. 40-42 |  | | Report (issue) | | ASPEN DISTRICT, COLORADO By ADOLPH INTRODUCTION \ , The Aspen district of Colorado was mapped and studied...monograph.1 With the lapse of 30 years mining in the area surveyed by Spurr has come to a standstill. During...correlation of the occurrence of ore in the Richmond Hill area with geologic structure, the account of the relation...detailed figures of the output of metals in Pitkin County, from 1880 to 1922, inclusive, as assembled...to Aspen, but the remainder of the output of the county has come almost entirely from Aspen. The production |  | | Report (volume) | | the Garo uranium-vanadium-copper deposit, Park County, Colo., by Verl R. Wilmarth__________________ ___...(B) Uranium resources of the Cedar Mountain area, Emery County, Utah, by Henry S. Johnson, Jr____________________...and uranium deposits of Monument Valley, San Juan County, Utah, by Richard Q. Lewis, Sr., and Donald E....Geology and ore deposits of the Kern River uranium area, California, by E. M. MacKevett, Jr_________________________...______________________ (H) Geology of the Clay Hills area, San Juan County, Utah, by Thomas E. Mullens____________ |  | | Report (volume) | | Glenwood Springs Quadrangle and Vicinity Northwestern Colorado B'Y N. WOOD BASS and STUART A. NORTHROP CONTRIBUTIONS...Limestone Member_______________________ Manitou Formation __________________________________ -----Dead Horse...Formation_____________________ ________________ Paradox Formation ______________________ -----_________ Pennsylvanian...Pennsylvanian and Permian________________________________ Maroon Formation____________________________________ Tongue...the Glenwood Springs quadrangle and vicinity, Colorado. Page FIGURE 1. Principal physiographic features |  | | Journal (article/letter/editorial) | | and sandstones of Pennsylvanian–Permian age, Colorado, USA: implications for provenance and metamorphic...UniÕersity, 108 Thompson Hall, Manhattan, KS 66506-3201, USA Received 27 October 1998; accepted 12 October 1999...Sangre de Cristo, Belden, and Maroon Formations from central Colorado were examined petrographically...from the Belden Formation have higher quartzrfeldspar ratios than do those from the Maroon and Sangre de...the order Sangre de Cristo Formation) Maroon Formation) Belden Formation, but the CIWX Žchemical index |  | | Journal (article/letter/editorial) | | BRAUNITE FROM SNOWMASS.PITKIN COUNTY. COLORADO; AusrrN F. Rocnns,Stanford,Unitersity,Cal,ifornia. Alsrnacr...country, is recorded from a new locality in Pitkin County, Colorado. It is a massive, somewhat granular, black...characteristic of it. Associated minerals are calcite, barite, a pleochroic mica [probably manganophyll...latter and probably the muscovite are detrital. Calcite and barite are "persistent minerals" and thus give...(2); Mason County, Tex. (3); Iron County, Mo. (4); Shannon County, Mo. (a); Humboldt County, Calif. (5) |  | | Journal (article/letter/editorial) | | PALEOZOIC SECTION IN THE VICINITY OF DOTSERO, COLORADO BY CHARLES FERNANDO BASSETT CONTENTS Abstract....................................... Chaffee formation....................................................................................... McCoy formation.......................................................................................... Maroon formation.............................................canyon and near the junction of the Eagle and Colorado rivers. Although the formations are folded and |  | | Report (volume) | | and mineralization in the Beaver-Tarryall area, Park County, Colo., a reconnaissance report, by Quentin...deposits of the Shafter mining district, Presidio County, Tex., by Clyde P. Ross _______ ______ (C) Adsorbent...on concentration tests on manganese from Perry County, by H. S. Rankin______ 1 45 127 223 ILLUSTRATIONS...PLATE 1. Geologic map of Beaver-Tarryall area, Park County, Colo__ In pocket 2. Geologic sections of...pocket 3. Generalized map of Beaver-Tarryall area, showing area of metamorphosed rocks and outlines of larger |  | | Report (issue) | | Ore Deposits of the· Kokomo-Tenmile District, Colorado By M. H. BERGENDAHL and A. H. KOSCHMANN . I... PAPER 652 Prepared in cooperation with the Colorado Mining Industrial Development Board .. 1\ UNITED...____________ _ Minturn Formation ________________________ _ Maroon Formation _________________________...Varieties of garnet from the Jacque Peak-Tucker Mountain-Copper Mountain area _______ -------------Primary and... ORE DEPOSITS OF THE KOKOMO-TENMILE DISTRICT, COLORADO By M. H. BERGENDAHL ABSTRACT .... • The Kokomo-Tenmile |  | | Journal (issue) | | questions. We will consider papers on any producing formation in the basin but with an intention to focus on...35 Welcome New RMAG Members! COVER PHOTO Avery Peak as seen from Gothic Campground, north of Crested...Dakota Sandstone through the Lower Permian Maroon Formation are tilted 40-45° to the southwest. The bedding...of the Maroon Formation are spectacularly exposed as slabs on the distinctive face of Avery Peak. Photo...locations where sackungen are well displayed in Colorado. They develop on the gentle part of a narrow ridge |  | | Journal (article/letter/editorial) | | AUGUST 1949 GEOLOGY OF THE McCOY AREA, EAGLE AND ROUTT COUNTIES, COLORADO BY HENEY F. CONNER CONTENTS Page...Distribution Introduction 1216 Source of flows Location of area and outline of geology... 1216 Method of mapping...considerations 1222 Pre-Laramide structural setting McCoy formation 1223 Laramide structures Pennsylvanian or Permian...McCoy Plate 5, figure 1 1241 area 1216 2. Columnar section for the McCoy area 1220 Plate Facing page 1.... Geologic map of the McCoy area 1215 3. Relation of separate lava flows of Plate 4, figure 1 1236 2. |  | | Report (issue) | | DIRECTOR C MIONIFEROUS FORMATIONS AND FAUNAS OF COLORADO BY GEORGE H. G-IIITT-Y. WASHINGTON GOVERNMENT...meridian 76° 30', from Tompkins County, New York, to Bradford County, Pennsylvania, by H. S. Williams...33 pp. B 16. Higher Devonian faunas of Ontario County, New York, by J. M. Clarke. 1885. 86 pp., 3 pls...B 56. Fossil wood and lignite of the Potomac formation, by F. H. Knowlton. 1889. 72 pp., '7 pls. B 63... Colo., and other points in the Tertiaries of Colorado and Utah, by S. H. Scudder. 1892. 35 pp., 3 pls |  | | Report (issue) | | Series 30 Bibliography and Index of Colorado Geology, 1984-1989 Colorado Geological Survey Department of...Resources Denver, Colorado 1990 Information Series 30 Bibliography and Index of Colorado Geology, 1984-1989...Institute under contract to the Colorado Geological Survey Colorado Geological Survey Department of...of Natural Resources Denver, Colorado 1990 ii FOREWORD In recognition of the need to more effectively...published literature on the state's geology, the Colorado Geological Survey is pleased to release Information |  | | Journal (article/letter/editorial) | | lake sediments in Fort Rock Valley, northern Lake County, Oregon. They range up to several hundred feet...structure to the joint and fault patterns of the area, but with one exception the adjoining lake beds...CENOZOIC STRUCTURE AND SEDIMENTATION OF THE SANTA FE AREA, NEW MEXICO* Brewster Baldwin New Mexico Bureau...and Mineral Resources, Socorro, N. M. The Santa Fe area—a 15-minute quadrangle, with Santa Fe, New Mexico...Mesozoic rocks are exposed just south of the Santa Fe area. In the southwest part are late Eocene sandstone |  | | Report (issue) | | WALCOTT, DIRECTOR GEOLOGY ASPEN MINING DISTRICT, COLORADO WITH ATLAS JOSIAH EDWARD SFURR SAMUEL FRANKLIN...blue limestone 22 28 ..... Weber formation 30 Maroon formation ... 33 .. Triassic formations _...Gunnison formation _ _ _ 39 _ Cretaceous series 41 Dakota formation ; Colorado formation 42 43...descriptive geology 41 41 _ Montana formation. Laramie formation xvii _ 53 _ 54 _ 54 Aspen special...Weber shales 114 _ Lenado Canyon . 118 XIV. Maroon sandstones on north side of Woody Creek Valley |  | | Report (issue) | | DEPOSITS OF THE BRECKENRIDGE MINING DISTRICT, COLORADO BY T. S. LOVERING UNITED STATES GOVERNMENT PRINTING....__ General geology___...__-_--_--_.___._--... Maroon formation_--_---_-_--__-_----. Morrison format...Benton shale._-_______.--____.__---... Niobrara formation ____________________ Pierre shale_---_--__---...PLATE 1. Map of part of the Breckenridge district, Colorado, showing some of the principal mine workings and...parts of the area mapped. The lower Paleozoic beds are not present. The Maroon formation (of Permian and |  | | Report (issue) | | geol·ogy Occurrence of refractory clay in Randolph County, W.Va., by K. J. Englund and H. J. Goett______________________...distinguishes Tertiary basalts in the Grays River area, southwestern Washington, by E. H. ~cKee-------...apatite-bearing ultramafic chlorite rock, Harford County, Md., by D. L. Southwick_______ Quartz diorite-quartz...monzonite and granite plutons of the Pasayten River area, Washington-Petrology, age, and emplacement, by...Upper Cretaceous Mancos Shale, Slick Rock district,Colorado, by D. R. Shawe ____________________________________________ |  | | Report (issue) | | Oxidized Zinc Deposits of the United States Part 3. Colorado By ALLEN V. HEYL GEOLOGICAL SURVEY BULLETIN...deposits and the resources of oxidized zin.c ores in Colorado UNITED STATES· GOVERNMENT PRINTING OFFICE, WASHINGTON...19180xidized zinc deposits of the United States. Part 3. Colorado. Washington, U.S. Govt. Print. Off., 1964. vi...Bibliography : p. 88-91. 1. Zinc ores-Colorado. 2. Zinc mines and mining-Colorado. I. Title. (Series) For sale...County_________________________________________________ Hahns Peak district________________________________________ |
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