 | | Report (issue) | | ALONG THE FRONT RANGE FROM DENVER TO BOULDER, COLORADO Clay Minerals Society 39th Annual Meeting and...Geological Survey Open-File Report 02-413 Denver, Colorado 2002 U.S. DEPARTMENT OF THE INTERIOR GALE A........................ 11 The clay industry in Colorado ..................................... 13 Rubey................. 67 Nederland; mining in Boulder County .............................. 67 Boulder Canyon..................... 12. Line-drawing of the Dakota Hogback and Red Rocks formations north of Morrison |  | | Report (volume) | | Refractory Clayrocks of the Dakota Group Along the Northern Front Range, Colorado By KARL M. WAAGE GEOLOGICAL...refractory clayrocks of the Dakota group along the northern Front Range, Colorado. Washington, U.S. Govt....Stratigraphic-Cretaceous. Clay-Colorado. ( Series) 2. Geology-Colorado. 3. For sale by the Superintendent...of clayrocks of the Dakota group________________________ Subdivisions of the Dakota group________________________________...features_______________________________________________ Douglas County area____ _ _ _ _ _ __ __ __ _ _ _ _ _ _ _ _ _ __ |  | | Report (issue) | | COLORADO STATE GEOLOGICAL SURVEY BOULDER R. D. GEORGE, STATE GEOLOGIST I Bulletin s\ Clays d Eastern...Eastern Colorado BY G. MONTAGUE BUTLER 1914 DENVEU,COLORADO THF. SMITH-BROOKS PRINTING COMPANY, STATE...STATE PRINTERS 1915 The Clays of Eastern Colorado AND DATA CoNCERNING THoSE NEAR SoME CENTERS oF PoPULATION...ASSOCIATE PROFESSOR OF GEOLOGY AND MINERALOGY COLORADO SCHOOL OF MINES GEOLOGICAL BOARD Hrs ExcELLENCY.... Governor of Colorado LIVINGSTON FARRAND ........... President University of Colorado WILLIAM G. HALDANE |  | | Report (issue) | | Dakota Group in Northern Front Range Foothills, Colorado GEOLOGICAL SURVEY PROFESSIONAL PAPER 274-B ... Dakota Group in Northern Front Range Foothills, Colorado By KARL M. WAAGE A SHORTER CONTRIBUTION TO... A revised subdivision and terminology for the Dakota group and local details of its stratigraphy UNITED...Introduction ______________________________________ Dakota terminology and subdivision_. _______________ Stratigraphy...locality_________ _________________ Intermediate phase—Boulder County..-------Northern marine phase______________________ |  | | Report (issue) | | Geologic Map of the Morrison Quadrangle, Jefferson County, Colorado By Howard E. Simpson and Stephen S....Geologic Map of the Morrison Quadrangle, Jefferson County, Colorado By Howard E. Simpson and Stephen S....Council of Governments (DRCOG), (then the Inter-County Regional Planning Council) and formerly supported...parallel to the mountain front, and lie east of the hogback. Within a single fossil zone the clay-mineral composition...illitemontmorillonite somewhat less, illite still less, and kaolinite the least. As more than one kind of clay mineral |  | | Report (issue) | | 99.37 [100.0] 100.00 (1) Oxford Co., Maine, USA. (2) Alto Bernardino, Brazil; by electron microprobe...barite, quartz (Wigu carbonatite, Tanzania); kaolinite (alteration zones); diamonds (river sands; may...about 20 km northwest of Picuı́, Paraı́ba. In the USA, from the Palermo #1 mine, near North Groton, Grafton...and elsewhere. In Colorado, along the Dakota hogback, from Turkey Creek, Jefferson Co., to Boxelder Creek |  | | Journal (article/letter/editorial) | | ALTERED TUFF BEDS OF CRETACEOUS AGE NEAR DENVER, COLORADO DON M. TRIPLEHORN AND BRUCE F. BOHOR United...States Geological Survey, Federal Center, Denver, Colorado 80225 Abstract-A hydrated alumino-phosphate mineral...Cretaceous Dakota Group and the overlying Mowry Shale in the Dakota hogback west of Denver, Colorado. It occurs...of the beds. Key Words-Diagenesis, Goyazite, Kaolinite, Phosphorus, Volcanic ash. INTRODUCTION Hydrated...and Sr varieties are usually associated with kaolinite. They are of interest because of their rarity |  | | Report (volume) | | Refractory Clay Deposits of South-Central Colorado GEOLOGICAL SURVEY BULLETIN 993 Refractory Clay...Clay Deposits of South-Central Colorado By KARL M. WAAGE GEOLOGICAL SURVEY BULLETIN 993 A description...semirefractory clays in the Purgatoire formation and Dakota sandstone UNITED STATES GOVERNMENT PRINTING OFFICE...__________________________________________________ Dakota sandstone.____________________________________________...______________________________________ Uniform bodies of Dakota sandstone.________________________ Fossils.___ |  | | Report (issue) | | r~~~J Geology of the Golden Quadrangle, Colorado GEOLOGICAL SURVEY PROFESSIONAL ~i''(': u (,, PAPER..." 872 ' GEOLOGY OF THE GOLDEN QUADRANGLE, COLORADO FRONTISPIECE.-Physiographic setting of the Golden...left middle ground is a hogback formed by resistant sandstone in the Dakota approximate directions of...quadrangle. Geology of the Golden Quadrangle, Colorado By RICHARD VAN HORN GEOLOGICAL SURVEY PROFESSIONAL...872 Geology of part of the Denver urban area, Colorado, with emphasis on deposits of Pleistocene age |  | | Report (volume) | | Eldorado Springs Quadrangle Boulder and Jefferson , Counties, Colorado C_-J / By JOHN D. WELLS CONTRIBUTIONS...Morrison Formation____________________________ ____ Dakota Group________________________________________ Benton...ELDORADO SPRINGS QUADRANGLE BOULDER AND JEFFERSON COUNTIES, COLORADO By JOHN D. WELLS ABSTRACT The Eldorado...and Mesozoic rocks form The Flatirons and the hogback ridges to the east. The eastern part of the quadrangle...Formation, Ralston Creek and Morrison Formations, Dakota Group, Benton Shale, Niobrara Formation, and Pierre |  | | Report (issue) | | of the Front Range Urban Corridor and Vicinity, Colorado By WALLACE R. HANSEN and ELEANOR J. CROSBY With...of the Front Range Urban Corridor and vicinity, Colorado. (Geological Survey Professional Paper 1230) Bibliography:...Geology Front Range, Colo. and Wyo. 2. Geology Colorado Denver region. 3. Environmental protection Front...Environmental protection Colorado Denver region. 5. Sediments (Geology) Colorado-Denver region-Testing...................... Hogback belt ............ ........................... Colorado Piedmont ......... |  | | Report (issue) | | Bibliography and Index of Colorado Geology 1981 1982 by American Geological · Institute Colorado Geological Survey...Resources Denver, Colorado I 1983 Information Series 19 BIBLIOGRAPHY AND INDEX OF COLORADO GEOLOGY 1981-1982...Geological Institute Colorado Geological Survey Department of Natural Resources Denver, Colorado 1983 ii CONTENTS...• • . . . . . • • . • • • . . • . . • • . 47 County Index............................................Geological S Institute, Falls Church, Virginia. Colorado Geological This volume contains 595 citations |  | | Book (edition) | | —Roadside Geology Series $14.00 RCMDSIDE EOLOGY of COLORADO Halka Chronic MAP SYMBOLS SEDIMENTARY ROCKS...Shale o«oooo| Castle Rock °°°°00l Conglomerate Dakota Sandstone Denver & Dawson ill Formations Undivided...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...and the rugged volcanic regions of southwestern Colorado are geologi¬ cally and scenically different from |  | | Journal (issue) | | green grass and blooming wildflowers. The secondary county road into the Pana mine was well maintained at...mine, in Harney County, and the Rabbit Basin and Little Eagle Butte, in Lake County—noteworthy is this...get off the blacktop at the green sign marking Hogback Road/Plush. This will be a left turn if you are...right turn if you are coming from the south. The Hogback Road is well-maintained gravel. Stay on this road...& MINERAL SHOW Nov. 10, 11, & 12, 2017 Jackson County Fairgrounds Pascagoula,MS admission $3.00 or $5 |  | | 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 |  | | Report (volume) | | Formation exposed on the west slope of the Dakota hogback just north of Morrison, Colo. Sample taken...taken approximately 25 feet below the Morrison-Dakota contact, NW% sec. 26, T. 4 S., R. 70 W. The major clay...hydration, etc. Heating to 550° C destroys the kaolinite crystalline structure and consequently the 7 A..._ 7-_-__-_-_-__________-____-_-_____ X X X Kaolinite X X _ X X __ X X __ X DESCRIPTION OF METHODS...cesium, and manganese methods Ammonium Sample Kaolinite 4_ _________ Montmorillonite 11__. Montmorillonite |  | | Report (volume) | | WALCOTT, DIKECTOK GEOLOGY OF THE BOULDER DISTRICT, COLORADO BY M. WASHINGTON GOVERNMENT PRINTING OFFICE.......................................... ...... Dakota formation...................... ........-....---....-.....-.---........... Intrusive rocks in the Dakota and Benton ..................... Intrusive rocks...___.________._.___._____----.--_--.---.--._ 62 Dakota sedimentation........_.......................--....--...^ .................... 67 Water in the Dakota............................................... |  | | Report (issue) | | Sandstone 48 Wanakah equivalent 48 CRETACEOUS 48 Dakota Sandstone 49 Graneros Shale 49 Greenhorn Limestone...compared with adjacent areas in New Mexico and Colorado 5—Modal analyses of Tertiary granites 6—Chemical...west through Santa Fe, New Mexico or San Luis, Colorado. The area is sparsely settled; Red River and Eagle...and Taos. The nearest railheads are at Antonito, Colorado, served by the Denver and Rio Grande western Railroad;... Most of the western part of the area, in Taos County, falls within the Carson National Forest and is |  | | Report (issue) | | adjoining areas, Gilpin and Clear Creek Counties, ·Colorado, by Paul K. Sims and Edwin W. Tooker_ _______...pitchblende deposits in Golden Gate Canyon, Jefferson County, Colorado, by John W. Adams and Frederick Stugard...to pitchblende-bearing veins at Marysvale, Piute County, Utah, by George W. Walker and Frank W. Osterwald...of the Los Ochos uranium deposit, Saguache County, Colorado, by R. C. Derzay _·- _______ ____ __ __ _------------...ROCKS Uranium-vanadium-copper deposits on the Colorado Plateau, by Richard P. Fischer _______ ____ __ |  | | Report (volume) | | . 234 " y { " ,-t .. .~,:",. I " , COLORADO "or.! _ +, (~ STATE OF .~ :'(' COL~ADO /... BULLETIN 40 RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BlaLlllGRAPHY by James L. Nelson-Moore,...Energy COLORADO GEOLOGICAL SURVEY DEPARTMENT OF NATURAL RESUURCES STATE OF COLORADO DENVER, COLORADO 1978...ete 11 st r ng of rad i aaet 1ve occurrences 1n Colorado, with a comprehensive blbi iography and bibliographic...association of radium, uranium. and vanadIum on the Colorado Plateau sparked several periods of exploratIon |  | | Report (volume) | | Research]. Paris, France. Colorado State Univ. Agr. Expt. Sta. Gen. Ser.-Colorado State University Agricultural...and Geology Bull. Idaho Bur. Mines and Geology County Rept.Idaho Bur. Mines and Geology Mineral Resources...Idaho Bureau of Mines and Geology Bulletin and County Report and Mineral Resources Report. Moscow, Idaho...Bulletin. Raleigh, N.C. North Dakota Acad. Sci. Proc.-Proceedings of the North Dakota Academy of Science. Published...Published jointly by the University of North Dakota and the North Dakota State University of Agriculture and Applied |  | | Report (volume) | | Alabama Alabama Geol Survey Bull Alabama Geol Survey County Rept. Alabama Geol Survey Inf Ser -Alabama Geol...Alabama Bulletm and Geological Survey of Alabama County Report and Geological Survey ofAlabama Informatwn... Ohio. Colorado School Mines Mineral Industr1es Bull -Colorado School Mines Quart. -Colorado School of...Bullehn and Quarterly of the Colorado School of Mmes Golden, Colorado. Colorado Water Conserv. Board, Ground-Water...Bas1c-Data Rept. -Colorado Water Conserv. Board, Ground--Water Ser., C1rc. -Colorado Water Conservahon |  | | Report (volume) | | Chicago, Ill. Colorado, University of: Studies, vols. 17, 18, nos. 1, 2. Boulder, Colo. Colorado School of...of Mines Magazine, vols. 19, 20. Golden, Colo. Colorado Scientific Society: Proceedings, vol. 12, nos...Augusta, M . Maryland Geological Survey: Baltimore County. Baltimore, Md. Meddelelser om Gronland, Bd. 71-76~...Second Series, 1 vols. 23, 24; Biennial Report. Jefferson City, Mo. I I National Academy of Sciences: ProcE1edings...23, nos. 1, 2, 24, no. 1. Quebec, Canada. South Dakota Geological Survey: Report of Investigations nos |  | | Report (volume) | | ............................................. Colorado......................................................................................... South Dakota..................................................5. Photograph of La Brea tar pit, Los Angeles County, Calif·---------------------------------------...down the sloping surfaces. Outcrop is in Zavalla County, Tex. Photograph by L. W. Stephenson. FIGURE ...along vein in sec. 22, T. 9 S., R. 25 E., Uintah County, Utah. Platform (foreground) is approximately 10 |  | | Report (issue) | | Geology and Ore Deposits of the Front Range Colorado By T. S. LO\'ERING and E. N. GODDARD GEOLOGICAL...in cooperation with the Colorado State Geological Survey Board and the Colorado Metal Mining Fund ~ oopr...Cretaceous (Dakota group)----------------~~~------------ Purgatoire formation _______________ _ Dakota sandstone..._____________________ _ Copper deposits in Jefferson County __ _ F. M.D. property _____________ _ Malachite...________________________ _ Cherry Creek and Douglas County placers _________________________ _ Mining districts |
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