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| .General ,qeology.·o f The U pp.er. Mississippi Valley District I ll. -1" GkOLOGICAL I SURVEY BULLETIN...BULLETIN 1015-G Prepared in cooperation with the Wisconsin Geological and Natural His tory Survey, the Illinois...and the Iowa Geological Survey \ I Zinc-Lead-Copper Resources and .General Geology of The Upper Mississippi...Mississippi ·Valley District By ALLEN V. HEYL, ERWIN J. LYONS, ALLEN F. AGNEW, and CHARLES H. BEHRE, Jr...BULLETIN 1015-G Prepared in cooperation with the Wisconsin Geological and Natural History Survey, the Illinois |
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| EVIDENCES OF ZINC-LEAD MINERALIZATION IN IOWA AND WISCONSIN, 1950-51 UNITED STATES DEPARTMENT OF THE...EVIDENCES OF ZINC-LEAD MINERALIZATION IN IOWA AND WISCONSIN, 1950-51 By Alien F. Agnew, Arthur E. Flint... Allingham Prepared in cooperation with the Wisconsin Geological and Natural History Survey Washington...EVIDENCES OF ZINC-LEAD MINERALIZATION IN IOWA AND WISCONSIN, 195051 By Alien F. Agnew, Arthur E. Flint...exploration.......... History and mineral production of district.. Previous geologic work .................. Acknowledgments |
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| Survey. Lead Isotopes from the Upper Mississippi Valley District A Regional Perspective By Timothy...Timothy M. Lead isotopes from the Upper Mississippi Valley district; a regional perspective / By Timothy...11 FIGURES 1, 2. 3, 4. Maps of Upper Mississippi Valley district and vicinity showing galena sample...Revised lead isotopic data for the Upper Mississippi Valley district from Heyl and others (1966).........B2 New lead isotopic data for the Upper Mississippi Valley district and vicinity..................... |
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| IN THE PRAIRIE DU CHIEN GROUP OF THE WISCONSIN ZINC-LEAD DISTRICT BY THE U. S. GEOLOGICAL SURVEY IN 1949-1950...Alien F. Agnew Prepared in cooperation with the Wisconsin Geological and Natural History Survey UNITED...... 6 Results ........... ....... 6 Crow Branch area ......... 8 Leix property. .... ....... 9 Farmiey... . . 9 Kennedy mine property ..... .9 James mine area ......... 11 Meekers Grove area. ....... 11 Vinegar...outline of main productive area of the Upper Mississippi Valley zinc -lead district and location of areas |
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| The Geology of the Upper Mississippi Valley Zinc-Lead District By ALLEN V. HEYL, Jr., ALLEN F. AGNEW...cooperation with the Wisconsin Geological and Natural Histoyy Survey, the Iowa Geological Survey, and...Cultural development and facilities related to mining Field work and acknowledgments Scope of the report...geologic work in the district Geology Stratigraphy Precambrian rocks Cambrian system Upper Cambrian series...Platteville formation Decorah formation Galena dolomite Upper Ordovician series Maquoketa shale Silurian system |
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| Sciences University of Wisconsin-River Falls 410 South Third Street River Falls, Wisconsin 54022 his is Wisconsin’s... breweries, bratwurst, and Packers football, Wisconsin also has a diverse geology and a history rich...settlement was initially spurred by the lead-zinc mining in its southwest comer, a heritage preserved by...forgotten, abandoned, and overgrown. In this respect, Wisconsin represents a frontier state for the mineral collector...several new localities, including the Flambeau copper mine near Ladysmith (Rosemeyer 1999, the Vulcan Materials |
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| DEPOSITS Gi.OLOGI C4( SC, • OF THE 119629 UPPER MISSISSIPPI V ALL IgRA RY 13Y 1 I.� I� I A1.1\1-�...1 9 1) CONTENTS. Introduction � Location and area Historical sketch Bibliography Production_� Past...production� Lead Zinc � Present production Recent mining act ivitScope of this report � Topography. Relief...Limonite 51 � Melanterite 51 Gangue minerals� 51 � Calcite 51 � Dolomite 51 � Selenite 52 � Barite 52 � Quartz...71 � General relations 72 � Mines in Iowa 72 � Dubuque district 72 History� � Geographic limits 73 � |
