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| ijJ~t 1tuiUtfaity of .fIiuutania MINNESOTA GEOLOGICAL SURVEY WILLIAM H. EMMONS, DIRECTOR IN...REPORT ON THE GEOLOGY OF EAST CENTRAL MINNESOTA INCLUDING THE CUYUNA IRON-ORE DISTRICT BY E. C. HARDER...A. W. JOHNSTON MINNEAPOLIS The University of Minnesota 19 1 8 CONTENTS Introduction ................ . . . . . . . . .... . 2 General geology of Minnesota. . . . . . . . . . . .... . . . . . . . . . .... . . . . . ... 4- 1 5 Rocks of east central Minnesota. . . . . . . . . . . . . . . . . . . . . . . . |
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| GEOLOGY OF THE CUYUNA DISTRICT, MINNESOTA: A PROGRESS REPORT UNIVERSITY OF MINNESOTA MINNESOTA GEOLOGICAL...DIRECTOR BULLETIN 36 The Geology of the Cuyuna District, Minnesota A PROGRESS REPORT BY FRANK F. GROUT...WOLFF, SR. MINNEAPOLIS· 1955 THE UNIVERSITY OF MINNESOTA PRESS PRINTED AT LUND PRESS, INC., MINNEAPOLIS...mines of the Cuyuna district in considerable detail. About 1940 a brief synopsis of Cuyuna geology was...the University of Minnesota. In 1941 Mr. Grout started active field work on the Cuyuna largely in connection |
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| IRE C TOR : I, THE LIMESTONES AND MARLS OF MINNESOTA BY CLINTON R. STAUFFER AND GEORGE A. THIEL ...UNIVERSITY OF MINNESOTA, PRESS .I' I iJ'fmOD~r~B . • ~Ih THE LIBRARY ST~ UNIVERSITY OF MINNESOTA MINNESOTA...EMMONS, DIRECTOR THE LIMESTONES AND MARLS OF MINNESOTA BY CLINTON R. STA I1FFER AND GEORGE A. THIEL...1933 UNIVERr:3ITY OF MINNESOTA PRESS COPYRIGHT 1933 BY THE UNIVERSITY OF MINNESOTA ALL RIGHTS RESERVED...RESERVED '( PREFACE Minnesota has extensive deposits of calcium carbonate in the form of limestones, dolomites |
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| QE653.E2 1983 551.7’15’0977 83-11509 ISBN 0-8137-1160-6 Contents Preface . v Introduction . L. G. Medaris...rocks and the Penokean orogeny in east-central Minnesota . G. B. Morey iii 49 67 85 97 IV Contents...Smith The Proterozoic red quartzite enigma in the north-central United States: Resolved by plate collision...anorogenic magmatic event which af¬ fected much of the North American continent at approxiTable 1. Chronology...magmatism Rif ting o 02 0- 1400 Anorogenic granitic 6 syenitic plutonism 1600 PEN0KEAN OROGENY 1800 |
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| ----___----_____-______--_ Diagrammatic cross section of Platteville, Decorah, and Galena strata eastward...___________________________ Generalized west-east cross section of Decorah formation and adjacent strata._____...Platteville, Decorah, and Galena strata with units in Minnesota-__________________________ Stratigraphic column...Galena rocks in the zinc-lead district----Type section of Quimbys Mill member of Platteville formation..._________________________________________ Type section of Spechts Ferry shale member of Decorah forma |
 | Klepper, Montis Ruhl, Ruppel, E.T., Freeman, V.L., Weeks, R.A. (1971) Geology and mineral deposits, east flank of the Elkhorn Mountains, Broadwater County, Montana. Professional Paper 665. US Geological Survey doi:10.3133/pp665 | Report (issue) |
| East Flank of the Elkhorn Mountains, Broadwater County, Montana GEOLOGICAL SURVEY PROFESSIONAL PAPER...East Flank of the Elkhorn Mountains, Broadwater County, Montana By M. R. KLEPPER, E. T. RUPPEL, V. L....______ _ Page 1 2 2 2 3 3 3 3 3 4 4 4 4 5 6 6 7 7 7 7 8 8 9 10 11 12 12 13 13 13 13 14 14...Northwest- and northeast-trending faults______ Range-front faults-------------------------Other faults...Indian Creekroad________________________________ 6. Slim Sam Formation (part) and Colorado Formation |
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| -Columbia Plateau province ________ _ Basin and Range province _________ _ Relations of area to province...Star VaUey ____________________ --_ .--. Caribou Range ___________ - - __ - - - - - - --Grays Lake and..._____________ - _- - - - - - -Preuss Range __________ - _- - - - - - - - - Aspen Range _________________ _ Schmid...Mountain _____ - - - - - -Preuss Range proper _____ -- ---_ Webster Range ________ - _- __ - - - -- -- ... XIII 1 1 1 1 2 5 5 5 6 8 8 9 9 9 10 10 10 10 11 11 11 11 12 12 12 13 13 13 14 15 15 16 16 17 17 |
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| Geology of the Shotgun Butte Area Fremont County, Wyoming By W. R. KEEFER and M. L. TROYER GEOLOGICAL..._________________________________ m 1 3 3 5 5 6 6 7 7 7 8 9 9 9 10 13 13 13 15 15 15 16 16 17 17 17...1. Armstrong mine section ____________________________________ _ 2. Shotgun Bench section ___________...Maverick Spring section ___________________________________ _ 4. Welton mine-Shotgun Butte section _________________________...East Sheep Creek section __________________________________ _ 6. West Dry Creek section _______ _' ___ |
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| PIEECTOE, THE MESABI IRON-BEARING DISTRICT OF MINNESOTA BY CHARLES KENNETH LEITH CHARLES RICHARD VAN...- - Thickness Chapter V.— The Upper Huronian Section I. Pokegama quartzite series _ 88 - - 90 -...Relations to other formations - - 5 99 ——— 6 . - CONTENTS. • Chapter The Upper Hi-roxiax series—Continued...Biwabik formation (iron bearing) A'. Page. 100 Section II. Distribution 100 Kinds lOl of rocks Greenalite...166 - Relations to other formations 167 168 Section III. Virginia slate Distribution 168 Kinds |
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| States and its possessions. The first compilation, "North American Geologic Formation Names," Bulletin 191...contains: (1) an alphabetical listing of 1,500 North American sedimentary formation names and 100 names...year 1955), Bulletin 1056-A, "Geologic Names of North America Introduced in 1936-1955," by Druid Wilson...listed about 5,000 new names introduced for use in North America, the Pacific Island possessions of the United...nonalphabetical "Index to the Geologic Names of North America," Bulletin 1056-B, by Druid Wilson, Grace |
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| PRE-MONTEREY GROUP ROCKS. ............................... 6 MONTEREY GROUP ....................................... 147 A. Lithologic description of the type section of the Claremont Shale in Claremont Canyon ....... ^7 B. Lithologic description of reference section of the Claremont Shale in Morrison Canyon .......as the East Bay Region. It is within the Diablo Range and is approximately 22 km (14 mi) wide and 170...Sandstone, (4) Tice Shale, (5) Hambre Sandstone, and (6) Rodeo Shale. The formations have been folded into |
 | Dunham, K. C., Wilson, A. A. (1985) Geology of the Northern Pennine Orefield (1st ed.) Vol. 2 - Stainmore to Craven - Economic memoir covering the areas of one-inch and 1:50 000 geological sheets 40, 41 and 50, and parts of 31, 32, 51, 60 and 61, New Series. Natural Environment Research Council, London. | Book (volume) |
| the stable Askrigg fault-block is flanked to the north by the Stainmore Trough and the Craven Basin respectively...in residues adjacent to the mines. P]ate 1 Section of a lead vein from Gra ·sington High Moor, presented...around Brough-under-Stainmore, ISBN O 11 884284 6 Biblio.graphicalreference DUNHAM, K. C., and WILSON...67 References for chapters 3, 4 and 5 67 Chapter 6 Structure Introduction 71 Structure of the Lower Palaeozoic...References 82 Area 11 Mineral deposits: Details 1.,he North Sw·aledale Mineral Belt 155 Chapter 10 Mineral |
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| .......................................... 415 North Carolina.................................................................................... 452 Chert and flint......................................................................................... 6 £ by 8 J inches.....................................Miller glacier, Glacier bay, Alaska (No. 281). 5. Section of moraine ridge on H idden glacier, Alaska, showing...ice from ablation by a veneer of drift (No. 370). 6. Freshly formed kettle hole in gravel derived from |
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| ILLUSTRATIONS 1. Glacial map of northeastern Minnesota, northern Wisconsin, and northern peninsula of...formerly covered by glacial lakes of northeastern Minnesota, northern Wisconsin, and northern peninsula of...glacial features_________________________________ 36 6. Map of part of Houghton quadrangle, Michigal~, showing...Outcr'op of Mowry shale on Thornton dome, Weston County, Wyo.; B, Hand specimen of Mowry shale collected...PLA'l'lD 16. A, Thin section of Mowry shale from Crook County, Wyo.; B, Thin section of Mowry shale from |
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| Roller Bearing Company, Rock Bit Division, Canton 6, Ohio. Cable address: of rock bits to use for your...semi-monthly, States, Conn. Washington at Emmett North, pending. St . Bristol, Central and Postmaster... : ; : ee AERODYNE FAN Provide the highest a range of sizes to up to 500,000 C. F. abundant supply...Shroud Sheave Block. ALLOY STEEL & METALS CO. 18 6 2 EAS T 5 5TH STS Mailing Address, ee ££...Men of long experience, great ability and long range thinking direct the nation’s iron and steel plants |
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| sections of Colchester Appendix A Appendix B I III— Mine data 164 (No. 2) coal and associated 173 — ...geology of the Alexis quadrangle Xorth-south cross-section of the Alexis quadrangle Surficial ( In pocket)...Creek, showing steep south slope and more open north slope of 23 the valley walls An early stage in...Graphic representation of outcrops of Suite IV in north and south parts of quadrangle bed of shell Graphic...overlying the Colchester ( No. 2) coal Natural cross-section of a septarian concretion four feet in diameter |
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| UNIVERSITY OF MINNESOTA. A REPORT ON THE GEOLOGICAL AND NATURAL HISTORY SURVEY OF MINNESOTA MADE IN ...SURVEY OF MINNESOTA. N. H. WINCHELL. STATK GEOLOGIST. 1872-1882. THE GEOLOGY OF MINNESOTA. VOL I...Secretary of State, on behalf of the people of Minnesota GEOLOGICAL SCIENCES in the TABLE OF CONTENTS...and Surveys in Minnesota. CHAPTER The By N. general physical features of Minnesota. building-stones...building-stones of Minnesota. By N. II. of Houston county. By N. II . of of Fillmore county. By N. II |
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| LIME A)fD SAND L"'COUNTY . . . . . . . . • . . Hy G. E. Ladd, assistant...LIME AND SAND INDUSTRIES 0~' ST. LOUIS CITY AND COUNTY. BY G. E. LADD, assistant geologist. CONTENTS... . . . . . . . . . . . . . . . . . . . . . . . . 6 Introduction . . . . . . . . . . . . . . . . . . .... . . . . . . . . 42 The Quarries in St. Louis County...... . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . . 71 (5) 6 BULLETIN, MISSOURI GEOLOGICAL SURVEY. PAOI<. The |
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| Driftless and adjacent areas of Wisconsin, Iowa, and Minnesota, there occur conglom erates and gravels with...n The Windrow formation consists of quartz and chert pebbles in a matrix of quartz sand and brown iron...weath ered away. The pebbles are mainly quartz and chert. Those of quartz are univer sally well polished...rounded to spherical and elliptical shapes. The chert pebbles are also well polished, but are mainly of...an inch in diam eter are rare, although a few chert boulders up to a foot in diameter have been observed |
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| ....................... In envelope Composite section and faunal chart ................................Figure 2. General view of School Mine Detailed view of School Mine ledge ................... 20 ledge...Rich Fountain chert ............................. 22 Characteristic Rich Fountain chert. V. Figure 1...Theodosia porous chert masses ...................... 28 Figure 2. Detail of above chert and its relationship...dolomite. VIII. Figure 1. Massive “Black and White” chert bed of the Theodosia formation ................ |
 | Djokic, Tara, Van Kranendonk, Martin J., Campbell, Kathleen A., Havig, Jeff R., Walter, Malcolm R., Guido, Diego M. (2021) A Reconstructed Subaerial Hot Spring Field in the ∼3.5 Billion-Year-Old Dresser Formation, North Pole Dome, Pilbara Craton, Western Australia. Astrobiology, 21 (1) 1-38 doi:10.1089/ast.2019.2072 | Journal (article/letter/editorial) |
| in the *3.5 Billion-Year-Old Dresser Formation, North Pole Dome, Pilbara Craton, Western Australia Downloaded...Kranendonk,1–4 Kathleen A. Campbell,5 Jeff R. Havig,6 Malcolm R. Walter,1 and Diego M. Guido7 Abstract...Formation. The data indicate deposition of a wide range of hot spring and associated deposits in a restricted...those from New Zealand, Yellowstone National Park, USA, and Argentina. Rare earth element and yttrium geochemistry...Zealand. 6 Department of Earth Sciences, University of Minnesota, Minneapolis, Minnesota, USA. 7 CONICET |
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| 14 No. 6 35 cents @ copy In Sterling, 3s Versatile Eimcos — work at many jobs around the mine, fit any...PASO AND FacToes Sac’ (ast Cry 10) vlam uu 6 lf BRANCH SALES AND SERVICE OFFICES 51.52 SOUTH...Crushers {World 4 | | Jaw Crushers Mining Section—|!} = ye {4 a Ve Fey | i- Pe Vibrating Screens...of the two stage cutting action and the special wing design which retains sharp cutting portions for...St San Francisco 5, California. Subscription in North Central r year. Entered as ‘ second class matter |
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| SURVEY VOLUME VI. LEAD AND ZINC DEPOSITS ( SECTION l) By ARTHUR W INSL OW ASSISTED IlY JAllfES D...have the honor to transmit herewith the first section of the Report on the Lead and Zinc Deposits of...with the idea of gathering a complete series of mine descriptions to form part of the report. Not until...illustration of the last statements, in the Southeast, Mine La Motte, which has been worked over 170 years,...lead to the value of about $10,000,000; the St. Joe mine, which has been worked for only 30 years, has produced |
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| '5 25 ILLUSTRATIONS Page FIGURE 1. 2. 3. 4. 5. 6. 7-16. Index map of the Western United States, showing...Formation and Preuss Sandstone at Telephone Creek section (loc. 9, fig. 5) ..... 13. Ephraim Conglomerate...junction of Sheep Creek with Greys River (loc. 10, fig. 6) ...................................................Highway 30 near Evanston, Wyoming (loc. 17, fig. 6) .......................................... 16. ...........—•......—-•—•••••••••••••••••••••• C2 4 6 7 8 9 11 12 13 14 15 16 17 18 20 22 TABLE ——————————— |
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| 1 I L GLACIAL DRIFTS OF T H E DAKOTA COUNTY AREA, MINNESOTA Downloaded from https://pubs.geoscienceworld...DAKOTA COUNTY AREA, MINNESOTA BY ROBERT V. RUHE AND LAURENCE M. GOULD ABSTRACT Dakota County in southeastern...southeastern Minnesota provides unique exhibits for the study of Pleistocene drifts derived from north and northwest...road cuts in the central and western parts of the county. The surficial geology consists of tills of Illinoian...the west. Post-Iowan tills are restricted to the north and west. The terms "Keewatin" and "Patrician" are |
