 | | 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...Elk Range thrust zone ......... ...... The Castle Creek fault zone ........ ...... Other faults ....... |  | | Report (volume) | | of the Leadville 1°X2° quadrangle, west-central Colorado : summary and discussion I by Alan R. Wallace...Radioactive dating-Colorado-Leadville Region. 2. Geology, Stratigraphic. 3. Geology-Colorado-Leadville Region...geochronology samples, Leadville 1°X2 o quadrangle, Colorado. III IV CONTENTS FIGURES 1. 2. 3. 4. 5. 6...of the Leadville 1°X2° quadrangle, west-central Colorado........................ 2 Map showing major geologic...quadrangle.............. 11 Plots of apatite and zircon fission-track data for the Gilman, Tennessee Pass |  | Wallace, A.R., Ludington, Steve, Lovering, T.G., Campbell, D.L., Case, J.E., Grauch, V.J.S., Knepper, D.H. (1988) Leadville 1 degree x 2 degrees Quadrangle, Colorado; a pre-assessment. Open-File Report Vol. 1988 (88-74) US Geological Survey doi:10.3133/ofr8874 | Report (issue) | | GEOLOGICAL SURVEY Leadville I°x2° quadrangle, Colorado: a pre-assessment by Alan R. Wallace , Steve...standards and stratigraphic nomenclature. Denver, Colorado -Menlo Park, California CONTENTS Page Preface...the Leadville I°x2° quadrangle in west-central Colorado under the Conterminous United States Mineral Resource...in west-central Colorado in the heart of the southern Rocky Mountains (fig. 1). The area combines a complex...understanding of mineral deposits. The proposed study area is underlain by a lithologically and structurally |  | | 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) | | INTRUSIVE ROCKS OF COLORADO By Edward J. Young Prepared in cooperation with The Colorado Mining Industrial...Industrial Development Board and the Colorado Geological Survey This report is preliminary and has not been...intrusive rocks of Colorado » » » *«» In pocket Laramide-Tertiary intrusive rocks of Colorado By Edward...Laramide-Tertiary intrusive rocks in the State of Colorado, geologic age localities, mining districts, localities...This information is shown on the State map of Colorado (scale 1:500,000) accompanying this report. In |  | | Report (issue) | | Formations in the Little Snake River area of northwestern Colorado, by E. J. McKay. . Disseminated sulfide...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...phosphate contents of water of southern Nassau County, N.Y., by N. M. Perlmutter an:d Ellis Koch ... |  | | Report (issue) | | . . Alabama ........ . Adams Gap and Shinbone Creek Roadless Areas, Alabama, by T . L. Klein and Donald...Donald K. Harrison Big Sandy, West Elliotts Creek, and Reed Brake Roadless Areas, Alabama, by Sam H. Patterson.... 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 |  | | Report (volume) | | Institute of Arctic and Alpine Research. University of Colorado. Boulder, Colo. Arctic lnst. North America Research...Ill. Colorado School Mines Mineral Industries Bull. Industries Bulletin. Golden, Colo. Colorado School...Mines Mineral Colorado School Mines Prof. Contr.-Professional Contributions of the Colorado School of Mines...Mines. Golden, Colo. Colorado School Mines Quart.-Quarterly of the Colorado School of Mines. Colo. Golden...Golden, Colorado-Wyoming Acad. Sci. Jour.-Journal of the Colorl;ldo-Wyoming Academy of Science. Colorado |
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