 | | Report (issue) | | the Aspen 15-minute Quadrangle, Pitkin and Gunnison Counties, Colorado By BRUCE BRYANT GEOLOGICAL SURVEY...A study of an area at the intersection of the Colorado mineral belt with the west flank of the Sawatch...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...stratigraphic relations of Cambrian rocks in west-central Colorado in a northwest-southwest section through Aspen |  | | Thesis/Dissertation | | PART OF THE BONANZA VOLCANIC FIELD, SAGUACHE COUNTY, COLORADO By John D. Mayhew ProQuest Number: 10781649...to the Faculty and the Board of Trustees of the Colorado School of Mines in partial ful fillment of the...Signed Golden, Colorado Date : Thesis Advisor ad of Department Golden, Colorado Date : T 1226...of the Bonanza volcanic field in south-central Colorado was studied primarily to determine its volcanic...rocks. The oldest units, Rawley Andes !te and Hayden Peak Latite, were erupted contemporaneous I y in |  | | Report (issue) | | GEOLOGICAL SURVEY Locatable Mineral Reports for Colorado, South Dakota, and Wyoming provided to the U.S.............................................. 1 COLORADO ................................................San Isabel and White River National Forests Lake County Land Exchange Offer (Iocmin40) .................................. 138 FIGURES OR ATTACHMENTS COLORADO Pike National Forests Shepard and Associates Land...National Forests Lake County Land Exchange Offer 1. Exhibit A: Property that Lake County will consider exchanging |  | | Thesis/Dissertation | | mapping technique in the Italian Mountain area, Colorado Item Type text; Thesis-Reproduction (electronic)...MAPPING TECHNIQUE IN THE ITALIAN MOUNTAIN AREA, COLORADO By Henry Albert Truebe A Thesis submitted to...tectonic setting of the Italian Mountain area in Colorado. . . . . . . . . . : ................... 2 Generalized...mapped by dividing the Italian Mountain area, Colorado into 884 100-meter grid spaces and inventory...technique was tested in the Italian Mountain area of Colorado and the resulting maps provide insights into the |  | | Report (issue) | | COLORADO GEOLOGICAL SURVEY BOULDER R. D. GEOqGE, State Geologi.t BULLETIN 22 MINERAL DEPOSITS OF THE...oozi5137 EAME"S BROS, STATE PRINTERS FOR COLORADO DENVER. COLORADO GEOLOGICAL B O A R D His Excellency...Shoup George Norlin Governor of Colorado President University of Colorado Victor C. Aldersox.. Charles...TRANSMITTAL State Geological Survey, Uxiversity of Colorado, October 28, 1920. Governor Oliver H. Shoup. Chairman...honor to transmit herewith Bulletin 22 of the Colorado Geological Survey. Very respectfully, R. D. George |  | | Report (issue) | | AND ORE DEPOSITS OF THE BONANZA MINING DISTRICT, COLORADO BY W. S. BURBANK WITH A SECTION ON HISTORY AND...W. HENDERSON Prepared in cooperation with the COLORADO METAL MINING FUND UNITED STATES GOVERNMENT PRINTING...__ Petrography.. ---_----_-----__--___ Porphyry Peak rhyolite.-------________. General character and..._______ Alteration and mineralization _______ Hayden Peak latite_________.________ General character and..._______--___----_____ Joe Wheeler mine.-_-_--__ _-_.__-________ Colorado Belle mine-____-_-__-_-_--------_Other mines and |  | | Report (volume) | | CHARLES D. WALCOTT, DIRECTOR A GAZE~?TEER OF COLORADO BY HEN.R Y GANNETT WASHINGTON GOVERNMENT PRINTING... _A GAZETTEER OF COLORADO. By HENRY ' GANNET,T. GENERAL DESCRIPTION. Colorado is_situated about midway...north, and extending southw.ard terminat~s ~n Pike~ Peak. The rise _from the east is in long spurs stretching...GAZETTEER OF COLORADO. through the Park Range on its way to join Green River, forming the Colorado. Middle...Mexico, the San Juan flo wing westward to the Colorado, and many branches of Gran9. and Gunnison rivers |  | | Report (volume) | | THE ! UNCOMPAHGRE PRIMITIVE AREA, "OT TTHWESTERN COLORADO - c-t SURVEY BULLETIN 1391-E Mineral Resources...Primitive Area, San Juan Mountains, Southwestern Colorado By T. A. STEVEN, P. W. LIPMAN, F. S. FISHER, U...primitive area, San Juan Mountains, southwestern Colorado. (Studies related to wilderness primitive areas)...I 19.3-.1391-E 1. Mines and mineral resources Colorado San Juan Mountains. I. Steven, Thomas August,...Primitive Area, San Juan Mountains, southwestern Colorado, and some adjoining national forest lands that |  | | Journal (article/letter/editorial) | | DEFINITION OF SOUTH A MINERAL CENTRAL BELT COLORADO. IN • JOHN W. GABELMAN. CONTENTS. PAGE Abstract............... Geologichistory of south central Colorado ................................ 180 182 182.................................. South central Colorado mineral belt ...................................east-directedmovementin the south toward the old central Colorado basin, formed structural intersectionsof probable...RiO GRAN DE l F•o. 1. Index map of southcentral Colorado. wood,Alta, AmericanFork, Bingham,Stockton,Ophir |  | | Report (issue) | | geol·ogy Occurrence of refractory clay in Randolph County, W.Va., by K. J. Englund and H. J. Goett______________________...apatite-bearing ultramafic chlorite rock, Harford County, Md., by D. L. Southwick_______ Quartz diorite-quartz...Upper Cretaceous Mancos Shale, Slick Rock district,Colorado, by D. R. Shawe ____________________________________________...Formation (Paleocene) in southeastern Hardeman County, Tenn., by S. M. Herrick and D. R. Rima-------...Formation in the Alvord ~ountain area, San Bernardino County, Calif., by G. E. Lewis----------------------- |  | | Report (volume) | | GEOLOGY OF THE SAN JUAN REGION OF SOUTHWESTERN COLORADO BY WHITMAN CROSS AND ESPER S. LARSEN UNITED...quadrangle._________________j____________-_____ Sunshine Peak rhyolite._-_--_____________-_-__-'____-_---_--_-Potosi...of the San Juan region, Colorado _________ In pocket 2. Relief map of Colorado showing the relation of...San Juan region to the other mountain masses of Colorado.__________ 10 3. Drainage map of the San Juan...area of about 12,000 square miles in southwestern Colorado. The greater part of the area is occupied by high |  | | Report (issue) | | --------------Cleburne County ----------~----------------- Tallapoosa County --------------------------Alaska...------------------Cochise County -----------------------------Gila County --------------------------------Greenlee...ee County ----------------------------R[aricopa County ----------------------------R[ohave County --...-----------------------------Pima County -------------------------------Pinal County -------------------------------Santa...-------Santa Cruz County --------------------------'ravapai County -----------------------------'ruma |  | | Report (volume) | | Metal-Mining Districts of the San Juan Mountains Colorado GEOLOGICAL SURVEY --*_-. BULLETIN T»^^ This...Metal-Mining Districts of the San Juan Mountains Colorado By C. T. PIERSON, W. F. WEEKS, and F. J. KLEINHAMPL...metal-mining districts of the San Juan Mountains, Colorado, by C. T. Pierson, W. F. Weeks, and F. J. Kleinhampl...tested for radioactivity in the San Juan region, Colorado. 44. Generalized geologic map showing location...Uncompahgre mining district, Ouray County, Colo. Page FIGUEE 48. Index map* of Colorado showing location of the |  | | Book | | Oligocene some Small intrusions push upward, 1 Colorado River feet; with uplift, canyons. of rich with...shale. oil lakes develop between them and the Colorado- Wyoming Rockies. Fine lake siltstones and silty...Uncompahgre Highland rises in eastern Utah and Colorado. -286 nvnciim nntiKh rlpnrmitpri in ... nrp-pxktinn rock In this book, most of the Colorado Plateau Province is discussed in Chapter I. The...Price US 40 Heber City — Duchesne US 40 Duchesne — Colorado US 89 Arizona — Kanab US 163 Arizona — Bluff US |  | | Report (issue) | | in the Little Snake River area of northwestern Colorado, by E. J. McKay. . Disseminated sulfide deposits...ages of the Mount Stuart Granodiorite and Beckler Peak stock, North Cascades, Wash., by J. C. Engels and...lacustrine Pliocene tuffs near Wikieup, Mohave County, Ariz., by R. A. Sheppard and A. J. Gude 3d . .... . . Permian deformation in the Eagle basin, Colorado, by V. L. Freeman . . . . . . . . . . . . . ....rock units in the Causey Dam quadrangle, Weber County, Utah, by T. E. Mullens 89 99 105 Sedimentation |  | | Report (issue) | | Carbonate-Hosted Sulfide Deposits of the Central Colorado Mineral Belt DAVID W . BEATY, GARY P . LANDIS...Carbonate-hosted sulfide deposits of the central Colorado mine ral belt: Introduction, general discussion...Regional geologic and tectonic setting of the central Colorado mineral belt . . . . Alan R. Wallace Paleozoic...thennal history, and basin evolution of central Colorado ..... . 19 . . . . . . . . . . . . . . . . ...and carbonate-hosted ore deposits of the central Colorado mineral belt ......... . ...... ....... ..... |  | | Report (issue) | | thrust-a major fault in the eastern part of Inyo County, Calif., by J. H. Stewart, D. C. Ross, C. A. Nelson...Permian-Triassic boundary in eastern Uintah County, Utah, and western Moffat County, Colo., by E. M. Schell and E....southeastern Wyoming and adjacent parts of Nebraska and Colorado, by M. E. LowrY------------------------------...WINDOW IN THE ELK RANGE THRUST SHEET NEAR ASPEN, COLORADO By BRUCE BRYANT, Denver, Colo. Abstract.-Structurally...section of rock from the interior of the central Colorado trough. In the Elk Mountains, on Conundrum Creek |  | | Report (issue) | | was based partly on information collected by the Hayden Survey from 1872 to 1878 and partly on later detailed...Coalville, Strawberry Valley, Hayden Peak, Gilbert Peak, and Marsh Peak sheets-; were available for a...the divide to the headwaters of the West Fork and Hayden Fork of Bear Eiver. These examinations proved beyond...West forks of Black Fork, East, Stillwater, and Hayden forks of Bear River; and thence westward to the...southern Wyoming and most of the area in northwestern Colorado shown on the map accompanying this report (PL |  | | Report (issue) | | in southwestern Wyoming and adjacent parts of Colorado and Utah By W. H. BRADLEY THE GREEN RIVER AND...in southwestern Wyoming and adjacent parts of Colorado and Utah. Washington, U.S. Govt. Print. Off.,...Fontenelle Tongue _____________________ _ Wilkins Peak Member __________________ _ Laney Shale Member __________...Wilkins Peak Member of the Green River Formation___________ Contact between the Wilkins Peak and Laney...Crystal molds of an unknown salt from the Wilkins Peak Member of the Green River Formation______________ |  | | Journal (article/letter/editorial) | | Mountain Intrusive Complex, eastern Elk Mountains, Colorado CHARLES G. CUNNINGHAM, JR. U.S. Geological Survey...Survey, Denver Federal Center, Denver, Colorado 80225 I06°40' ABSTRACT T h e Italian M o u n t a i...I L O M E T R E S Almont j DENVER MAP AREA COLORADO MINERAL BELT /Gunnison EXPLANATION Tertiary...Italian Mountain Intrusive Complex, Gunnison County, Colorado. Base from U.S. Geological Survey Pearl Pass...MOUNTAIN INTRUSIVE COMPLEX, EASTERN ELK MOUNTAINS, COLORADO oriented p e r p e n d i c u l a r to t h e contact |  | | Report (issue) | | Petrology of the San Juan Region Southwestern Colorado By ESPER S. LARSEN, JR., and WHITMAN CROSS GEOLOGICAL...an area of I2fiOO square miles in southwestern Colorado UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON...GEOLOGY AND PETROLOGY OF THE SAN JUAN REGION, COLORADO vard University contributed liberally by financing...GEOLOGY AND PETROLOGY OF THE SAN JUAN REGION, COLORADO Pre-Cambrian rocks Continued Granitic rocks Continued...Chemical analyses ______________________ Sunshine Peak rhyolite._____________________ Occurrence and general |  | | Report (issue) | | original corners discovered by William Newbrough, county surveyor^ and marked for the corners oh the east...Wagon roads of sec. 20, T. 20 N., R. 116 W., Uinta County. Wyo.; scale, I inch to 000 feet. Map from Kenuuerer...Newbrough: Southern Uinta County, Wyo., showing lands covered by tax list of county, March 1, 1905; scale...scale, 1 inch to 2 miles. Southern part of Uinta County, Wyo., showing land entries, State and railroad patented...ranch of Beckwith, Quinn & Co. in Uinta County,. Wyo., and Rich County Utah, 1903; scale, 2 inches to 1 mile |  | | Book | | Acknowledgments SOME TWENTY MILES northwest of Boulder, Colorado, about halfway between the plains and the icy...of all, was Longs Peak. Eastward lay foothills and the great high plains of Colorado. There was Denver...Goodykoontz, my major professor at the University of Colorado, whose excellent guidance aided my original research... librarian of the State Historical Society of Colorado. In The National Archives I give special thanks...gratitude.) For further information on Gardner and Hayden I am indebted to Mrs. Anne Gardiner Pier of Williamstown |  | | Report (issue) | | 72 Geology of the Flaming Gorge Area Utah-Colorado-Wyoming By WALLACE R. HANSEN GEOLOGICAL A reexamination...through the Territorial Surveys of Powell, King, and Hayden UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON...1920- Geology of the Flaming Gorge area, Utah-Colorado-Wyoming. Washington, U.S. Govt. Print. Off., 1964...188-192. 1. Geology-Ut~h-Daggett Co. 2. Geology-Colorado-Moffat Co. 3. Geology-,Vyoming-Sweetwater Co....I. Title. II. Title: Flaming Gorge area, Utah-Colorado-,Vyoming. (Series) For sale by the Superintendent |  | | Report (volume) | | ............................................. Colorado.................................................counties....................................... Colorado....................................................................................... Map of Colorado, showing location of mining districts...........though the data are supposed to be on file with the county authorities. The name does not always correspond...embracing the mountainous area of southwestern Colorado. The mining region consists of a number of mining |
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