 | | Report (volume) | | Resources of Trinidad-Aguilar Area Las Animas and Huerfano Counties, Colorado GEOLOGICAL SURVEY BULLETIN...Resources of Trinidad-Aguilar Area Las Animas and Huerfano Counties, Colorado By R. L. HARBOUR and G. H. DIXON...beds in Raton formation from Four Mile Canyon to Colorado Canyon. 14. Sections of coal beds in Raton formation...OF THE TRINIDADAGUILAR AREA, LAS ANIMAS AND HUERFANO COUNTIES, COLORADO By R. L. HARBOUR AND G. H. DIXON...of the Trinidad coal field lies in southeastern Colorado in the Raton Mesa coal region between the Great |  | | Report (issue) | | the Igneous Rocks of the Spanish Peaks Region Colorado GEOLOGICAL SURVEY PROFESSIONAL PAPER 594-G GEOLOGY...ROCKS OF THE SPANISH PEAKS REGION, COLORADO The Spanish Peaks (Las Cumbres Espanolas). Geology of the...the Igneous Rocks of the Spanish Peaks Region Colorado By ROSS B. JOHNSON SHORTER CONTRIBUTIONS TO GENERAL... 1. Geologic map of the Spanish Peaks region, Colorado ___________________________________________ _..._ In pocket FRoNTISPIECE. The Spanish Peaks (Las Cumbres Espanolas). FIGURE 1. Index map of the Spanish |  | | Journal (article/letter/editorial) | | Thermally Altered Coal from the Purgatoire River Valley of Colorado Abstract: A column of coal from...cavities of the fusinoids commonly filled with calcite. Vitrinoids are all altered to a dark-brown color...never released. Only quartz, kaolinite, siderite, calcite, and Fe2(SO4)s were identified by X-ray examination...Spanish Peaks in the Raton Basin of south-central Colorado. The specific sample site was chosen because of...Clegg (1955) and Clegg and Bradbury (1956); and in Colorado by Fenneman and Gale (1906), Eby (1925), McFarlane |  | Song, Xiaoxia, Ma, Hongtao, Saalidong, Benjamin M., Li, Kaijie (2021) Petrography, Mineralogy, and Geochemistry of Thermally Altered Coal in the Tashan Coal Mine, Datong Coalfield, China. Minerals, 11 (9) 1024 doi:10.3390/min11091024 | Journal (article/letter/editorial) | | have been reported in many countries, such as the USA [1–3], South Africa [4,5], Australia [6–8], Spain...unaltered coal were dominated by kaolinite, quartz, calcite, and dolomite and were less abundant in ankerite...Dolomite, ankerite, muscovite, kaolinite, quartz, calcite Kaolinite, dolomite, ankerite, anhydrite, muscovite...kaolinite, quartz, ankerite Kaolinite, muscovite, calcite, tobelite Kaolinite, dolomite, ankerite, tobelite...quartz Kaolinite, calcite, dolomite Kaolinite, dolomite, calcite, quartz Kaolinite, calcite, quartz, dolomite |  | | Journal (issue) | | :facets Flatirons Mineral Club of Boulder County, Colorado Volume 61, Number 6 The Flatirons Mineral...Mineral Show is on December 7‐9 at the Boulder County Fairgrounds in Longmont, 10 am to 5 pm each day...Artisan Table”. You are not required to get either a Colorado Multiple Events License and/or a Tax Resale number...for prizes. Some examples are small pieces of calcite, Apache tears, quartz crystals, fossils, wood,...Leader The Picket Wire Canyon south of La Junta, Colorado, contains the largest dinosaur trackway in the |  | | 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 (volume) | | "Red Beds" of New Mexico with those of southern Colorado. __ _--_--__-_--__-_-_._-._________ Cretaceous...sandstone and associated limestones (Comanche) _ _ Purgatoire formation (Comanche) --_-______.._.______.._...sandstone.. ___________________________________ Colorado group. , -_.-.-___________-___________._____....formation (Cretaceous?)-__---__--.-----------_ Purgatoire formation (Lower Cretaceous) and Dakota sandstone...and Galisteo Valley____________________ San Jose River to Rio Salado. -___---_---__.-._-__--.-.-----.General |  | | Journal (issue) | | 17 RARE FOSSILS COLLECTED IN SOUTH DAKOTA AND COLORADO . . . . 18 IMPORTANT U. S. CIVIL SERVICE EXAMINATIONS...Whole No. 126 SOME GEOLOGICAL NOTES ON TRINIDAD, COLORADO By EARL FLOYD l 1t, ·e- ge or ·o· ~ .ry...southwestern part of Las Animas County, is the coal mining center of southern Colorado. It has a population...Highways 85 and 87 ; it is 16 miles north of the Colorado-New Mexico state line. The city is surrounded...garages, and houses for the lllloers. The Purgatoire River ( river of lost souls) heads in the Sangre de |  | | Report (issue) | | and Rocky Mountain ProvincesPowder River, Bighorn Basin, and Wind River regions, by James F. Wilson, Jr...Great Plains and Rocky Mountain ProvincesGreen River and Hams Fork regions, by Neville G. Gaggiani ....Great Plains and Rocky Mountain ProvincesSan Juan River region, by F. Eileen Roybal .... Coal resources...Decker Mine, Montana ............... Seneca Mine, Colorado ..................... Mine drainage, by Arthur...water in mine pit from dewatering of aquifer in Colorado ............................ Sketch showing possible |  | | Journal (article/letter/editorial) | | Morrison Formation (Upper Jurassic), Western Interior, USA Stan P. Dunagan a,*, Christine E. Turner b a Department...Martin, TN 38238, USA b U.S. Geological Survey, Box 25046, MS-939, Denver, CO 80225-0046, USA Abstract During...developed in the Morrison Formation of east-central Colorado, occupying a stratigraphic interval that is equivalent... Cañon City, CO), 15 (Bravo Canyon, near Purgatoire River, CO), 16 (Dinosaur National Monument, Vernal...near Moore, UT, in the San Raphael Swell), 19 (Colorado National Monument, CO), 20 (Fruita, CO), 21 (Dewey |  | | Report (issue) | | OF THE GREAT PLAINS AQUIFER SYSTEM IN NEBRASKA, COLORADO, KANSAS, AND ADJACENT AREAS r ~ U.S. GEOLOGICAL...Alaska 4230 University Dr., Rm. 101 LAKEWOOD, Colorado Federal Center, Bldg. 810 U.S. Geological Survey...of the Great Plains Aquifer System in Nebraska, Colorado, Kansas, and Adjacent Areas By JOHN O. HELGESEN...of the Great Plains aquifer system in Nebraska, Colorado, Kansas, and adjacent areas / by John O. Helgesen...in the Great Plains aquifer system in Nebraska, Colorado, Kansas, and adjacent areas. 2. Map showing thickness |  | | 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...mine, operated by Robinson Brick Co., Golden, Colorado; an active clay mining operation in the Laramie |  | | Book (edition) | | CENOZOIC Tertiary dq conglomerate = Green early River shale Tertiary sediment eroded Haslet Mpa de inde...ROCKS Uinta Mountain Proterozoic ey, group REN Animas Trough metasediment Uncompahgre metasediment ...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 |  | Collins, Donley S., Cobban, Robert R., Foord, Eugene E., Murphy, Jack A. (1989) Bibliography for update and revision of U.S.G.S. Bulletin 1114, Minerals of Colorado -- a 100 year record, by Edwin B. Eckel, Part A - Paper copy --Bibliography data file disks. Open-File Report Vol. 1989 (89-206) US Geological Survey doi:10.3133/ofr89206a | Report (issue) | | Survey Denver, Colorado Department of Geology, Denver Museum of Natural History Denver, Colorado NOTE FOR...revision of U.S.G.S. Bulletin 1114, Minerals of Colorado A 100 year record, by Edwin B. Eckel By Donley...Prepared in cooperation with Friends of Mineralogy - Colorado Chaptar, and the Denver Museum of Natural History...references dealing with the mineralogy of the state of Colorado. It is part of a more than 10 year effort to update...and revise U.S.G.S. Bulletin 1114, Minerals of Colorado: A 100 year record, by Edwin B. Eckel (1961). |  | Schimmelmann, Arndt, Mastalerz, Maria, Gao, Ling, Sauer, Peter E., Topalov, Katarina (2009) Dike intrusions into bituminous coal, Illinois Basin: H, C, N, O isotopic responses to rapid and brief heating. Geochimica et Cosmochimica Acta, 73 (20) 6264-6281 doi:10.1016/j.gca.2009.07.027 | Journal (article/letter/editorial) | | 47405-1405, USA b Indiana University, Indiana Geological Survey, Bloomington, IN 47405, USA Received 22...cleats and fractures were frequently filled with calcite, and (iv) ‘contact-metamorphism’ dramatically decreased...±0.1&. 3.3. Elemental and isotopic ratios 3.4. Calcite quantitation and isotopic characterization The...quantified CO2 yield was used to calculate the calcite weight % in coal based on the assumption that no...015 93 26.07 Calcite analyses Concentration in coal d18O calcite vs. VSMOW d13C calcite vs. VPDB wt |  | Popov, Marin A., Nuccio, Vito F., Dyman, Thaddeus S., Gognat, Timothy A., Johnson, Ronald C., Schmoker, James W., Wilson, Michael S., Bartberger, Charles E. (2001) Basin centered gas systems of the U.S. Open-File Report 2001-135. US Geological Survey doi:10.3133/ofr2001135 | Report (issue) | | Midcontinent Rift Four Corners (Chuar Group) Snake River Downwarp Modoc (Hornbrook) St. Peter Fm (Michigan)............................... 147 Park Basins, Colorado..................................................................................... 211 Snake River Downwarp, Idaho . . . . . . . . . . . . . . . ....Snake River downwarp, Paradox Basin (Precambrian Chuar Group), Denver Basin, Park Basins of Colorado, North...Snake River downwarp Paradox Basin (Precambrian Chuar Group) Denver Basin Park Basins of Colorado North |  | | Report (issue) | | Bldg., 2600 corridor, 18th and CSts..NW. DENVER, Colorado-Federal Bldg., Rm. 169,1961 Stout St. LOS ANGELES...ROLLA, Missouri-1400 Independence Rd. DENVER, Colorado-Map Distribution, Bldg. 810, Federal Center FAIRBANKS...etc New Mexico Colfax County. 2. Volcanic ash, tuff, etc. New Mexico Union County. 3. Potassium-argon dating...4. Geology New Mexico Colfax County. 5. Geology New Mexico Union County. I. Wilcox, Ray E. (Ray Everett)...sedimentary formations intruded by this complex (Purgatoire Formation, Dakota Sandstone, Graneros Shale, |  | | Journal (article/letter/editorial) | | ........... 251 Oil Creek, below Garden Park, Colorado.................................................before* marine strata are again met with in the Purgatoire formation, one of the members of the Washita...the environments of the Sundance, Morrison, and Purgatoire formations, indicating that the Sierra Nevada...Morrison and in Garden Park, near Canyon City, Colorado; later at Como Bluff and elsewhere in Wyoming...TERISTICS AND DISTRIBUTION The Morrison of eastern Colorado and central Wyoming, Stanton writes,2 “consists |  | | Report (issue) | | Pliocene ash-flow tuff, Buzzard Creek area, Harney County, Oreg., by G. W. Walker.________ Petrography and...migrations of the Arkansas River during the Quaternary Fowler, Colo., to the Colorado-Kansas State line, by...an indicator of base flow in part of the Potomac River basin, by F. W. Trainer________________ C177 Comparative...Clinopyroxene-scapolite-tremolite-(quartz-zoisite-calcite-sphene-pyrite). i Accessory minerals are in parentheses...PLIOCENE ASH-FLOW TUFF, BUZZARD CREEK AREA, HARNEY COUNTY, OREGON By GEORGE W. WALKER, Menlo Park, Calif |  | | Report (volume) | | ............................................. Colorado.................................................that are widely distributed, such as quartz and calcite, have been omitted, except those that by reason...especially from those of Arkansas, California, Colorado, New Mexico, Oregon, South Dakota, Tennessee,...minerals and rocks, their occurrence and uses: Colorado State Geol. Survey Bull. 6, 1913. 8 USEFUL...See Bauxite and Halloysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found |  | | Book (edition) | | —Roadside Geology Series $14.00 RCMDSIDE EOLOGY of COLORADO Halka Chronic MAP SYMBOLS SEDIMENTARY ROCKS...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...This book is designed to give to Coloradoans and Colorado visitors - especially those with little or no |  | | Report (volume) | | Notes. Colorado School Mines Mineral Industries Bull. Industries Bulletin. Golden, Colo. Colorado School...University. Colorado School of Mines Mineral Professional Contributions of the Colorado Colorado School...Mines Quart.- Quarterly of the Colorado School of Mines. Golden, Colo. Colorado Univ. Studies Ser. Earth Sci...Sci.- University of Colorado Studies, Series in Earth Science. Boulder, Colo. Colorado Water Conserv. Board...Board Ground-Water Ser. Circ. Colorado Conservation Board, Ground-Water Series Circular. Denver, Colo |  | | Book | | 1RP 40 West 20th Street, New York, NY 10011-4211, USA 10 Stamford Road, Oakleigh, Melbourne 3166, Australia...Jurassic Morrison Formation (Dry Mesa Quarry, Colorado) 256 vi Contents 17 Kenneth Carpenter and...Sciences Denver Museum of Natural History 2001 Colorado Blvd. Denver, CO 80205 U.S.A. Sunil Bajpai Vertebrate...Sciences Denver Museum of Natural History 2001 Colorado Blvd. Denver, CO 80205 U.S.A. Daniel Chure Dinosaur...G. Lockley Department of Geology University of Colorado, Denver 1200 Larimer St. Denver, CO 80217 U |  | | Report (volume) | | Mines Quart.-Colorado School of Mines Quarterly. Golden, Colo. Colo. Sci. Soc. Proc.-Colorado Scientific...Artesian aquifers of the upper James River Valley, Brown County, South Dakota [abs.]: Geol. Soc. America...deposits in Golden Gate Canyon, Jefferson County, Colorado: U. S. Geol. Survey Bull. 1030-G, p. iv, 187-209...1890-1956. Cretaceous section, Medina County, Texas, to Val Verde County, Texas, in San Angelo Geol. Soc....mine and the Quartz Creek granite near Gunnison, Colorado: Jour. Geophys. Research, v. 61, no. 2, pt. 1 |  | | Report (volume) | | Crossroads: Lyons, P. L., 4. Gilbert H., 10. Colorado, South Silverton area: Expanding horizons: Lay...MissisJoralemon, I. B. Engineering geology, research: sippi River, Pleistocene history: Trowbridge, A. C.,1. Eckel...processes: Perry, ter, J. D., 3. T. G., 3. Mississippi River and Gulf Industrial minerals: Gillson, J. L , 5..., 11. D. J. Rocky Mtn. geosyncline in Canada: Colorado Plateau: Wengerd, Warren; P. S., 4. S. A., 6....described. Div. Mines, 1; Jenkins, O. P., Choctaw County, Highway 17 area: 3. Toulmin, L. D., Jr., 3. Minor: |
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