 | | Report (issue) | | Geology of the Needle Mountains, Southwestern Colorado GEOLOGICAL SURVEY PROFESSIONAL PAPER 644-A Precambrian...Geology of the Needle Mountains, Southwestern Colorado By FRED BARKER SHORTER CONTRIBUTIONS TO GENERAL...16 16 22 22 Page Igneous rocks Continued) Bakers Bridge Granite_________-------_--------Quartz diorite...----------_-__-------Map of the Needle Mountain area, showing geographic place names and topographic...SOUTHWESTERN COLORADO By FEED BARKER ABSTRACT The Needle Mountains of southwestern Colorado are an uplifted |  | | Report (issue) | | the Western and Southeastern Needle Mountains, Colorado Field Trip Guidebook by David A. Gonzales1 ...86001 2 Fort Lewis College Department of Geology Durango,CO81301 CONTENTS Page Field Trip Road Log -...Geologic Map of the Electra Lake Area, Western Needle Mountains, Colorado PLATE 2 - Geologic Map of the...Vallecito Creek-Lake Creek area, LaPlata and Hinsdale Counties, Colorado Field Trip Road Log Dayl Western...the history of Precambrian rocks in southwestern Colorado. This contemporary work has also raised new questions |  | | Report (volume) | | Precambrian Clastic and Pelitic Rocks, Southwestern Colorado and Northern New Mexico GEOLOGICAL SURVEY BULLETIN...Precambrian Clastic and Pelitic Rocks, Southwestern Colorado and Northern New Mexico By FRED BARKER CONTRIBUTIONS...Needle Mountains, Colo____________ 3. Snowdon Peak area, Needle Mountains, Colo_______________ 4. Part of...PRECAMBRIAN CLASTIC AND PELITIC ROCKS, SOUTHWESTERN COLORADO AND NORTHERN NEW MEXICO By FEED BARKER ABSTEACT...clastic rocks of southwestern Colorado and northern New Mexico. In Colorado, the Vallecito Conglomerate |  | | Report (issue) | | Irving Formation, Southeastern Needle Mountains, Colorado by David A. Gonzales Open-File Report 88-660...Mountain-Dead Horse Creek Area......................22 Vallecito Creek Area ............................Irving Formation in the Animas Canyon-Bear Creek area and Twilight Gneiss...............................Irving Formation in the Vallecito Creek-Lake Creek area...................................................metamorphosed felsic volcanic rocks of central Colorado............................ 77 Comparison of the |  | | Report (issue) | | drainage in the Animas River watershed, San Juan County, Colorado Com piled by Stanley E. Church1 Open-File...GEOLOGICAL SURVEY 1 Denver Federal Center, Denver, Colorado 80225 Table of Contents Chapter 1. Geologic...metal-rich waters in the southeast Red Mountains area, near Silverton, Colo., by D. J. Bove, M.A. Mast...procedures applied to metal-mining related wastes in Colorado and Montana and a relative ranking method for...preparation for the upcoming hearing before the Colorado Water Quality Commission on water quality standards |  | | Report (issue) | | Basement in Colorado GEOLOGIC A I, Rock Units of the Precambrian Basement in Colorado By OGDEN TWETO...TWETO GEOLOGY OF THE PRECAMBRIAN BASEMENT IN COLORADO U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 1321-A...igneous rocks in outcrop and the buried basement in Colorado UNITED STATES GOVERNMENT PRINTING OFFICE...1912-1983 Rock units of the Precambrian basement in Colorado. (Geological Survey Professional Paper ; 1321-A)...Geology, Stratigraphic Pre-Cambrian. 2. Geology Colorado. QE653.T9 1986 551.7'1'09788 I. Title. For sale |  | | 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 |  | | Report (issue) | | Inc. 3300 Penrose Place, P.O. Box 9140, Boulder, Colorado 80301 GSA Books Science Editor Campbell Craddock...Papers presented at a 2-day symposium, held in Durango, Colorado, May 1984, in conjunction with the Rocky Mountain...Precambrian rocks in southeastern Wyoming and northern Colorado ................... Wayne R. Premo and W. R. Van...volcano-plutonic terrane in the Gunnison and Salida areas, Colorado M. E. Bickford, R. D. Shuster, and S. J. Boardman...mineralization of the Needle Mountains, southwestern Colorado ........ 0... cc eens James D. Collier The role |  | | Report (volume) | | Mineral Resources of the San Juan Primitive Area, Colorado By T. A. STEVEN and L. J. SCHMITT, JR., U.S...1261-F An evaluation of the mineral potential of the area UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON...System, but the act provided that each primitive area should be studied for its suitability for incorporation...primitive areas, Colorado. The area discussed in the report corresponds to the area under consideration...have been proposed for the area to be considered for wilderness status. The area that was studied is referred |  | | Report (issue) | | Mineralization of the Florida Mountain Area, Needle Mountains, Southwestern Colorado by , James D. Collier 1 Open-File...^Department of Geology Fort Lewis College Durango, Colorado 81301 CONTENTS Abstract.................................. Proterozoic rocks of the study area............................. Descriptive petrology................ Uranium occurrences outside study area.......................... Grizzly Gulch...........ILLUSTRATIONS Plate I. Map showing location of study area in relation to prominent geographic features of |  | | Report (issue) | | Rocks Northeast of Steamboat Springs, Park Range, Colorado GEOLOGICAL SURVEY PROFESSIONAL PAPER 1041...Rocks Northeast of Steamboat Springs, Park Range, Colorado By GEORGE L. SNYDER with a section on GEOGHRONOLOGY...previously unstudied area of Colorado and comparison with related rocks elsewhere in Colorado and Wyoming UNITED...rocks northeast of Steamboat Springs, Park Range, Colorado. (Geological Survey Professional Paper 1041) Bibliography:...Docs, no.: I 19.16:1041 1. Intrusions (Geology) Colorado Steamboat Springs region. 2. Geology, Stratigraphic |  | | Report (issue) | | . Glacier Bay ational Monument Wilderness study area, Alaska, by David A. Brew and Arthur L. Kimball...Kimball ..... Granite Fiords Wilderness study area, Alaska, by Henry C. Berg and Tom L. Pittman ................... . Tracy Arm-Fords Terror Wilderness study area and vicinity, Alaska, by David A. Brew and A. L...Western Chichagof and Yakobi Islands Wilderness study area, Alaska, by Bruce R. Johnson and Arthur L. Kimball............... ... . . ... . Arnold Mesa Roadless Area, Arizona, by Edward W. Wolfe and Robert A. McColly |  | | Report (issue) | | quartz-pebble conglomerates, Southern Lake Superior Region, USA ...................................................conglomerates of the Black Hills, South Dakota, USA .......... J.A. Redden Application of the time and...quartz-pebble conglomerate in southeastern Wyoming, USA ..................................... R.S. Houston...Uranium in Lower Proterozoic conglomerates of the Koli Area, Eastern Finland ............... 189 O. Äikäs, R...Field Engineering Corporation, Grand Junction, Colorado, United States of America Abstract Precambrian |
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