 | | Report (volume) | | Geology of the Kelso Junction Quadrangle Iron County, Michigan By KENNETH L. WIER GEOLOGICAL SURVEY ...cooperation with the Geological Survey Division Michigan Department of Conservation tUtIV JUN271967 S...metarhyolite porphyry.________________________ Amasa Formation.____________________________________________...Metadiabase associated with West Kiernan sill and Hemlock Formation._ ________________________________________...metadiabase in Margeson Creek Gneiss..._______ Quartz porphyry in Randville Dolomite._________________ |  | | Report (issue) | | Sholdeis-Doane and Hed Rock explorations, Iron County, Michigan Kenneth L. Wier and Brace E. Kennedy Prepared...cooperation of the Geological Survey Division Michigan Department of Conservation This report and accompanying...with inter"bedded metasediments (Hemlock formation) .............. 7 Iron-formation .......................... 12 Volcanic greenstones (Hemlock formation) ..... 12 Iron-formation .................. 13...area, Iron County, Michigan Magnetic data in vicinity of ShoIdeis and Doane explorations, Iron County |  | | Report (volume) | | Geology of the Lake Mary Quadrangle Iron County, Michigan By RICHARD W. BAYLEY GEOLOGICAL SURVEY...cooperation with the Geological Survey Division Michigan Department of Conservation UNITED STATES GOVERNMENT...1919Geology of the Lake Mary quadrangle, Iron County, Michigan. Washington, U. S. Govt. Print. Off., 1959...Division, Michigan Dept. of Conservation. Bibliography: p. 108--110. 1. Geology-Michigan-Iron Co. Iron County...County, Michigan. (Series) QE75.B9 no. 1077 ----Copy 2. 1. Title: Lake Mary quadrangle, 557.74975 G |  | | Report (volume) | | Geology of the Kiernan Quadrangle Iron County Michigan By JACOB E. GAIR and K. L. WIER GEOLOGICAL...relations______________________________________________ Hemlock formation____________________________________________... CONTENTS Middle Precambrian rocks-Continued Hemlock formation-Continued Biotite-, hornblende-, and...basic intrusive rocks__________________________ Quartz porphyry_ _ _ __ _ _ __ __ __ __ _ _ __ __ __ __...PLATE 1. Geologic map of Kiernan quadrangle, Iron County, Mich. 2. Map showing relationship of magnetic |  | | Report (issue) | | Stratigraphy of Pre-Keweenawan Rocks in Parts of Northern Michigan GEOLOGICAL SURVEY PROFESSIONAL PAPER 314-C Prepared...cooperation with the Geological Survey Division, Michigan Department of Conservation Stratigraphy of...of Pre-Keweenawan Rocks in Parts of Northern Michigan By HAROLD L. JAMES SHORTER CONTRIBUTIONS GEOLOGICAL...cooperation with the Geological Survey Division, Michigan Department of Conservation UNITED STATES GOVERNMENT...Goodrich quartzite._ ______ Hemlock formation __________ Fence River formation._ Amasa formation__ ________ |  | | Report (issue) | | and Ore Deposits of the Iron River-Crystal Falls District, Iron County Michigan GEOLOGICAL SURVEY PROFESSIONAL...of the Michigan Department of Conservation PAPER 570 Geology and Ore Deposits of the Iron River-Crystal...River-Crystal Falls District, Iron County Michigan By H. L. JAMES, C. E. BUTTON, F. J. PETTIJOHN, and K. L...cooperation with the Geological Survey Division of the Michigan Department of Conservation UNITED STATES GOVERNMENT...________ Hemlock Formation___________________ Greenstone in the Hemlock FormationBird Iron-Bearing Member |  | | Journal (article/letter/editorial) | | drilling has connected some of the isolated outcrops of iron-formation bands and has made it possible to map...the supposed eastward continuation of the Gogebic iron formation (Animikie); and (2) the existence of a...to revision of the pre-Cambrian correlation of Michigan, which touch more or less also the correlations...general change, but he agrees with Allen that Michigan correlation should be carefully tested to ascertain...may be equivalent to certain series elsewhere in Michigan, now otherwise correlated. I. CORRELATION ON |  | | Report (issue) | | Geology of the Florence Area, Wisconsin and Michigan GEOLOGICAL SURVEY PROFESSIONAL Prepared under...Wisconsin Geological and Natural History Survey; Michigan Department of Conservation^ Geological Survey... Geology of the Florence Area, Wisconsin and Michigan By CARL E. DUTTON GEOLOGICAL SURVEY PROFESSIONAL...Wisconsin Geological and Natural History Survey; Michigan Department of Conservation, Geological Survey...________________________________ Discovery and mining of iron ore_________________ Previous geologic work____ |  | | Report (issue) | | Troughs Area of the Penokean Orogen, Northern Michigan U.S. GEOLOGICAL SURVEY BULLETIN 1904-L AVAILABILITY...Troughs Area of the Penokean Orogen, Northern Michigan By J.S. KLASNER and P.K. SIMS U.S. GEOLOGICAL...troughs area of the Penokean Orogen, northern Michigan / by J.S. Klasner and P.K. Sims, p. cm. (Contributions...references. 2. Geology, Structural Michigan. 1. Thrust faults (Geology) Michigan I. Sims, P.K. (Paul Kibler)...geology of the Felch and Calumet troughs area, Michigan L4 Map showing detailed rock attitudes and location |  | | Report (issue) | | WALCOTT, DIRECTOR THE CMSTAL FALLS IRON-IARING DISTRICT OF MICHIGAN liY J. MORGAN CLEMENTS and HENRY...clay slate with analyses of other clay slates. and iron ores ferruginous chert, and ore bodies .. Siderite-slate...Thickness Ore deposits General description of Mansfield mine deposit Relations to surrounding beds 64 65 66...concentration 68 Exploration 73 69 70 72 —The Hemlock formation 73 Distribution, exposures, and topography...Continued. I'agn. Normal scdiinontaiit^s (if the Hemlock formation Economic products Building and ornamental |  | | Journal (article/letter/editorial) | | intracratonic southern The early Proterozoic Hemlock volcanics, which are a part of a passive margin...petrogenetic origin of the rock suites to deter mine whether the tectonic environment was suboceanic...Regional geology The Precambrian geology of northern Michigan and northeastern Wisconsin is very complex and...accumulated in elongated emplaced into the Hemlock Formation (Fox, basins and on platforms between...a basal quartzite, an iron formation, and the tholeiitic basalts of the Hemlock For of turbidites of |  | | Report (issue) | | Michigamme Formation and Goodrich Quartzite, Northern Michigan Regional Stratigraphic Implications and Suggested...Michigamme Formation and Goodrich Quartzite, Northern Michigan Regional Stratigraphic Implications and Suggested...Michigamme Formation and Goodrich Quartzite, northern Michigan: regional stratigraphic implications and suggested...Geology, Stratigraphic Proterozoic. 2. Geology Michigan. 3. Michigamme Formation (Mich. and Wis.). 4....Michigamme Formation R4 Slate members R4 Bijiki Iron-formation Member R7 Drill hole descriptions R7 Clark |  | | Journal (article/letter/editorial) | | Economic Vol. 68, 1973, pp. 934-959 Precambrian Iron-Formations of the United States * R. W. B^YLE¾^m)...The thickest and most extensive Precambrian iron-formations of the United States are in the Lake...Superior region, in Minnesota, Wisconsin, and Michigan. Thinner units occur within the Precambrian cores...of Colorado, New Mexico, and Arizona. The major iron-formations in the Menominee, Marquette, Gogebic...about 2 b.y. Lithologic associationsand detailed iron-formation stratigraphy,however, differ greatly from |  | | Journal (article/letter/editorial) | | from Metamorphic and Igneous Rocks near Iron Mountain, Michigan by L. T. ALDRICH, G. L. DAVIS, and H. L...determined for minerals from an area in northern Michigan about 35 miles square. Granites, pegmatites, and...patterns of mineral ages. The area around Iron Mountain, Michigan, was particularly suitable for such a study...metamorphic rocks of the area around Iron Mountain, Dickinson County, Michigan. The recent demonstration by Hart...discordant results. The granites and pegmatitites at Quartz Creek, Colorado, are such examples. More recent |  | | Journal (article/letter/editorial) | | Geotectonic Implications for the Negaunee Iron Formation, Michigan Author: Natalie Pietrzak-Renaud Don Davis...Geotectonic Implications for the Negaunee Iron Formation, Michigan, Precambrian Research (2014), http://dx...Slate and the Negaunee Iron Formation of the Marquette Range Supergroup, Michigan. It is one of a series...1) it gives a definitive minimum age of Negaunee Iron Formation M deposition; 2) it confirms recent...that the Negaunee Iron Formation is older than the Mesabi, Gunflint and Gogebic Iron Ranges and not te |  | | Report (issue) | | region underlie parts of Minnesota, Wisconsin, and Michigan, very near the geographic center of the North...of geosynclinal affinity and includes the great iron-formations of the region. These rocks are bounded...of Minnesota, northern Wisconsin, and northern Michigan, very near the geographic center of the North...Minnesota (Morey, 1983a,b), and in Wisconsin and Michigan (Sims and Peterman, 1981, 1983; Sims and others...Stratified rocks of the Animikie basin-Includes the major iron-formations of the region (Age,:::::: 2,100-1,860 |  | | Journal (issue) | | UNDERGROUND 10 Winter visitors enjoy underground mine tours, mineral museums, and limestone caverns. By...By Jim Landon THE MINERALS THAT MADE AMERICA 36 Iron, copper, lead and zinc transformed the United States...By Steve Voynick ROCK & GEM KIDS 48 46 THE HEMLOCK CLAIMS 48 World-class sources rich in history and...called a “skull”. Source: Keweenaw Peninsula, Michigan (3 x 2 x 1.5 inches) (Heritage Auctions photo/HA... Rock & Gem Winter Visitors Enjoy Underground Mine Tours, Mineral Museums and Limestone Caves Story |  | | Journal (article/letter/editorial) | | Allostratigraphic Relationships of EarlyProterozoic Iron-Formations in the LakeSuperior Region G. B. MOREY...whicharesedimentologically relatedandcontain majorunitsof iron-formation, aredivisible intoallostratigraphic sequences--packages...rocktypes. Ananalysis of thistypeshows thattheregion's iron-bearing strataweredeposited throughout theprogressive...thenorthand iron-formation having manydescriptive attributes associated withAlgoma-type iron-formation...theassumption ofa single correlatable EarlyProterozoic iron-formation in alltheLakeSuperior ironranges. Sedimentation |  | | Journal (article/letter/editorial) | | Variations across the Proterozoic Penokean Orogen, USA and Canada John P. Craddock, David H. Malone, Mark...Variations across the Proterozoic Penokean Orogen, USA and Canada, Precambrian Research (2018), doi: https://doi...Variations across the Proterozoic Penokean Orogen, USA and Canada John P. Craddock, Geology Department,... Macalester College, St. Paul, MN 55105 USA David H. Malone, Department of Geography-Geology, Illinois...Geosciences, Boise State University, Boise, ID 83725 USA Jennifer N. Gifford, The University of Mississippi |  | | Report (issue) | | Geology of Central Dickinson County Michigan GEOLOGICAL SURVEY PROFESSIONAL Prepared in cooperation...Division^ Michigan Department of Conservation PAPER 310 Geology of Central Dickinson County Michigan By...cooperation with the Geological Survey Division, Michigan Department of Conservation UNITED STATES GOVERNMENT...relations__ Conditions of deposition._-_____-_-__ Vulcan iron-formation.___.______________ Description ________________________...Continued Baraga group._____________________________ Hemlock formation. ____________________ Michigamme sla |  | | Report (issue) | | Evidence for Continental Crustal Assimilation in the Hemlock Formation Flood Basalts of the Early Proterozoic...Evidence for Continental Crystal Assimilation in the Hemlock Formation Flood Basalts of the Early Proterozoic...Evidence for continental crustal assimilation in the hemlock formation flood basalts of the Early Proterozoic...Acknowledgments 14 Analytical methods 14 Geochemistry of the Hemlock and Quinnesec Formations 15 Isotopic and trace...chondrite-normalized REE patterns of the Quinnesec and Hemlock Formations with typical volcanic rock types from |  | | Journal (article/letter/editorial) | | THE VOLCANICS OF THE MICHIGAMME DISTRICT, OF MICHIGAN (PRELIMINARY). THIS name is given to a series of...volcanic rocks occurring on the Upper Peninsula of Michigan, between Townships 42 and 47 N., and Ranges 30...tributaries, the Fence (Mitchigan), the Deer, and the Hemlock Rivers. Previous work in this area.-The chief interest...occurrence of iron ores in the sedimentary rocks associated with the volcanics. The iron deposits first...Major T. B. Brooks in his report on the iron-bearing rocks of Michigan.' Apparently little attention was paid |  | | Book | | district of Michigan 33 35 35 Copper mining on Isle Eoyal and elsewhere Marquette iron district Menominee...39 iron district Crystal Falls, Florence, and Iron River Gogebic iron district Vermilion iron district...Mesabi iron district Accounts of the district before Opening and development Cuyuna 37 39 iron districts...42 44 iron district Baraboo iron district Less important developments 45 ., 45 Clinton iron ores...ores of Dodge County, Wis 45 Paleozoic iron ores in western Wisconsin Iron ores of the north .''hore of |  | Tohver, E., Holm, D.K., van der Pluijm, B.A., Essene, E.J., Cambray, F.W. (2007) Late Paleoproterozoic (geon 18 and 17) reactivation of the Neoarchean Great Lakes Tectonic Zone, northern Michigan, USA: Evidence from kinematic analysis, thermobarometry and 40Ar/39Ar geochronology. Precambrian Research, 157 (1) 144-168 doi:10.1016/j.precamres.2007.02.014 | Journal (article/letter/editorial) | | Neoarchean Great Lakes Tectonic Zone, northern Michigan, USA: Evidence from kinematic analysis, thermobarometry...44242, USA c Department of Geological Sciences, University of Michigan, Ann Arbor, MI 48109-1063, USA d Department...Geological Sciences, Michigan State University, East Lansing, MI 48824-1031, USA Received 24 March 2006;...stabilization of the Superior craton. In northern Michigan, this zone underlies the Paleoproterozoic Marquette...subparalleled the Great Lakes tectonic zone in northern Michigan and northern Wisconsin (Fig. 1b). This cratonic |  | | Journal (article/letter/editorial) | | reviewed: After describing the Gillis copper mine in Person county, North Caro lina, the earliest discovered...as follows: “ The rock immediately investing the mine is the altered slate belonging to the Taconic system...dolerite as being common over parts of Granville county. Professor Kerr refers the rocks of certain parts...by Kerr and Hanna in 1887, the Person-Granville county area is grouped as the northernmost part of the...Epidote occurs both in the trap rock and in the quartz, and in the slate strata near the dike, which seems |
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