 | | Journal (article/letter/editorial) | | paleocurrents was made of the Freda sandstone, Jacobsville sandstone, Bayfield group, Dresbach formation...the Northern Michigan highland extended through northern Wisconsin and northern Michigan and acted as...Keweenawan basin, which was north of the Northern Michigan highland approximately in the present site of...sequence was deformed and eroded, but the Northern Michigan highland persisted as a positive area, and the...central part of the basin, but much of the Jacobsville sandstone and Bayfield group undoubtedly represents |  | | Report (issue) | | University University Michigan Townsend Drive Drive 1400Townsend 1400 Houghton, Houghton, Michigan Michigan49931-1...J. the Keweenaw Peninsula, Michigan: Institute on Lake Superior Geology Proceedings, Keweenaw Peninsula...Peninsula, Michigan: Institute on Lake Superior Geology Proceedings, 40th 40thAnnual AnnualMeeting, Meeting..."Field Guide to the Geology Geology of the the Keweenaw Keweenaw Annual Institute Institute on on Lake Lake...Lake Superior Superior Geology Peninsula, Michigan" Michigan" (Bornhorst (Bornhorst and others, 1983) for |  | | Report (issue) | | (CaBSiO4OH) vesicle filling from a basaltic Houghton County lava flow. Small specks of native copper occur...the surface and between the nodular masses. The Michigan Bicentennial symbol (back cover) incorporates...Survey Division BULLETIN 6 THE MINERALOGY OF MICHIGAN by E. Wm. Heinrich Professor of Mineralogy and...University of Michigan Ann Arhor, Michigan Lansing, Michigan 1976 STATE OF MICHIGAN WILLIAM G. Mrr...State of Michigan CL '48 s.321.6. Printed by Speaker-Hines and Thomas, Inc., Lansing, Michigan. Available |  | | Book | | Mineralogy of Michigan by E. W. Heinrich updated and revised • by George W. Robinson M By E W~ Hellnr]ch...Museum Michigan Technological University Houghton, Michigan 49931 2004 © MINERALOGY OF MICHIGAN 3 FOREWORD...FOREWORD Michigan has a long and varied geologic history that includes repeated episodes of volcanism...before the first Europeans set foot here. When Michigan became a state in 1837, one of the first actions...and we continue to learn more about them today. Michigan minerals helped to build the state and nation |  | | Report (issue) | | Shale E2 Freda Sandstone E4 Bayfield Group E6 Orienta Sandstone E6 Devils Island Sandstone E6 Chequamegon...Chequamegon Sandstone E6 Bayfield Group Equivalent Rocks E9 Fond du Lac Formation E9 Hinckley Sandstone E9 Jacobsville...sedimentary rocks in Minnesota, Wisconsin, and Michigan were examined, sampled, and described with the... the Fond du Lac Formation, and the Hinckley Sandstone. The "Red Clastic series" (Lugn, 1934) in Nebraska...Wisconsin northeastward throughout the Keweenaw Peninsula in Michigan, and on Isle Royale in Lake Superior |  | | Report (issue) | | Northern Michigan and Wisconsin Prepared in cooperation with the Geological Survey Division, Michigan Department...Potential for Diamond-Bearing Kimberlite in Northern Michigan and Wisconsin By W. F. Cannon and M. G. Mudrey...cooperation with the Geological Survey Division, Michigan Department of Natural Resources Description of...possibility that kimberlites in Wisconsin and Michigan might be the source for drift diamonds in Wisconsin...-----------------Eagle, Waukesha County---------------------Plum Creek, Pierce County ___________________ _ Saukville |  | | Journal (article/letter/editorial) | | Survey, National Center-MS 954, Reston, VA 22092, USA (Received October 10, 1990; accepted after revision...Survey, National Center--MS 954, Reston, VA 22092, USA. tinent rift system (MRS) of North America is one...including the famous native copper deposits of the Keweenaw Peninsula, the stratiform copper sulfide and native... ONIARIO WISCONSIN 3.6-1.85 1.85 'li'J i MICHIGAN ILLINOIS 1.5-1.4 i i 1.1 j ' i IZ IIII i...Locationof the rift south of LakeSuperiorin Minnesota,Michigan,Wisconsin,Iowa, Nebraska, and Kansas is inferred |  | | Journal (article/letter/editorial) | | Rift-Related Echo Lake Intrusion in Northern Michigan, USA Alexander James Koerber and Joyashish Thakurta...Sciences, Western Michigan University, 1903 W Michigan Ave, Kalamazoo, MI 49008, USA; alexander.j.koerber@wmich...Lake intrusion in the Upper Peninsula (UP) of Michigan, USA, was formed during the 1.1 Ga Midcontinent Rift...(PGE)-enriched zone within a 45 m thick magnetite-ilmenite-bearing olivine gabbro unit with grades up to...Eagle intrusion, in the Upper Peninsula (UP) of Michigan and the Tamarack intrusion in northeastern Minnesota |  | | Journal (article/letter/editorial) | | [DT] Time resolution of geologic events on the Keweenaw Peninsula and implications for development of...Geological Engineering Geology and Geophysics, Michigan Technological University, Houghton, M I 49931...Three flood-type lava flows from the Keweenaw Peninsula in upper Michigan have been precisely dated, using...Analyses of three detrital zircon grains from a sandstone at the base of the Copper Harbor Conglomerate...1. Introduction and geology The Keweenaw Peninsula in upper Michigan has been considered the type area |  | | Journal (article/letter/editorial) | | of the Sturgeon River, some 25 km SW of Baraga, Michigan. The paleosol was developed on hydrothermally...Keweenawan basalt and is overlain by the Jacobsville sandstone. Textures, mineralogy, and chemical composition...to the contact of the paleosol with the Jacobsville sandstone. Many of these changes are similar to those...had equilibrated with K-feldspar in the Jacobsville sandstone. The Keweenawan basalt was oxidized quite...the Keweenawan lavas and the overlying Jacobsville sandstone. We then show that the petrography, the |  | | Report (volume) | | Wilderness Study Area, Houghton and Baraga Counties, Michigan By W. F. CANNON and ELIZABETH R. KING, U.S. GEOLOGICAL...land in the Sturgeon River Wilderness study area, Michigan, that is being considered for wilderness designation...and Baraga Counties in the Upper Peninsula of Michigan. * * CONTENTS H - Page Summary --------------------...13 Pleistocene glacial deposits- -----Jacobsville Sandstone ---------- 14 15 Diabase dikes -------------Basalt-...43 Glacial deposits- ------------ 44 Jacobsville Sandstone ---------- 42 43 VI CONTENTS Potential |  | | Journal (issue) | | of native copper in the Quincy mine ca. 1918. (Michigan Technological University Archives, Houghton) ...Donald Pearce (1941-1989) The “Copper King” The MICHIGAN COPPER COUNTRY L. W i l s o n New Mexico Bureau...t a n l e y J. D y l II Seaman Mineral Museum Michigan Technological University % 1992 T h e M in e...crystal group, 13.6 cm, from an unknown mine in the Michigan Copper Country. Richard A. Kosnar collection;...wrote the classic work on the copper deposits of Michigan in 1929. Photo by Wendell E. Wilson. TENT . |  | | Report (issue) | | 28 Geologic Structure East and South of the Keweenaw Fault on the Basis of Geo physical Evidence L...Mountains, which is indicated from the geology of the Keweenaw Peninsula and from recent aeromagnetic data [Hinze...of Lake Superior through the Lower Peninsula of Michigan. Much of the western half of the Lake Superior...major thrust faults, a number of which occur in Michigan and Wisconsin and strike parallel to the axis...strongly folded, in central Minnesota, northern Michigan, and Wisconsin, a pronounced unconformity usually |  | | Journal (article/letter/editorial) | | SomeCopperSulfideDeposits Near Mount Bohemia,KeweenawCounty, Michigan JAMESM. ROBERTSON Abstract Coppersulfides,in...interestingamounts,have recentlybeendiscoveredin the Keweenaw Peninsulaof northernMichigan, a district long...basal part of the NonesuchShale at White Pine, Michigan, the sulfidesof the Lake Superior Copper especially...BOHEMIA more than brief mention of sulfides in the Keweenaw 1203 Geologic Setting Peninsulain his report...geologyof the KeweenawPeninsulahasbeen Mount Bohemia, Michigan. Although primarily a comprehensively describedby |  | | Journal (article/letter/editorial) | | ......................... Granite of northern Michigan and Wisconsin......................................................................... Freda sandstone...................................................................................... Eileen sandstone..................................................................................... Orienta sandstone.............................................................................. Devil’s Island sandstone.............................................. |  | | Report (issue) | | Marquette and Sands Quadrangles Marquette County Michigan GEOLOGICAL SURVEY PROFESSIONAL Prepared...cooperation with the Geological Survey Division of the Michigan Department of Conservation PAPER 397 Geology...Marquette and Sands Quadrangles Marquette County Michigan By JACOB E. GAIR and ROBERT E. THADEN GEOLOGICAL...cooperation with the Geological Survey Division of the Michigan Department of Conservation UNITED STATES GOVERNMENT...rocks- _______-________-_---_-_-_--------Jacobsville Sandstone. ____.__-_-_-_-------_----Structure. __ |  | | Journal (article/letter/editorial) | | formation and Marshall formation crossbedding of Michigan basin 1219 Geological Society of America Bulletin...limestone isopach (Glen Dean to base of Aux Vases sandstone) and principal sand trends . . . . 1220 12. Isopach...University; Dr. Louis Briggs, University of Michigan; Garland Ells, Michigan Geological Survey; Table 1. Salient...Geological Survey. Dr. Louis Briggs, University of Michigan, Dr. Kenneth Hamblin, University of Kansas, and...Northwestern University, Dr. Louis Briggs, University of Michigan, and Forest Rees, Humble Oil Co., for their helpful |  | | Report (issue) | | VOLCANICS (MIDDLE KEWEENAWAN) ON ISLE ROYALE, MICHIGAN Prepared in cooperation with the National Park...Isle Royale, Michigan By N. KING HUBER GEOLOGY OF ISLE ROYALE NATIONAL PARK, MICHIGAN GEOLOGICAL SURVEY...-···-·--· 2 The Portage Lake Volcanics on the Keweenaw Peninsula__ 3 The Portage Lake Volcanics on Isle...------Correlation between Isle Royale and the Keweenaw Peninsula -----------------------------------...middle and upper Keweenawan rocks of northern Michigan and adjacent parts of Wisconsin-------------- |  | D’Agrella-Filho, Manoel S., Pacca, Igor I.G., Trindade, Ricardo I.F., Teixeira, Wilson, Raposo, M.Irene B., Onstott, Tullis C. (2004) Paleomagnetism and 40Ar/39Ar ages of mafic dikes from Salvador (Brazil): new constraints on the São Francisco craton APW path between 1080 and 1010 Ma. Precambrian Research, 132 (1) 55-77 doi:10.1016/j.precamres.2004.02.003 | Journal (article/letter/editorial) | | Sciences, Princeton University, Princeton, NJ 08544, USA Received 9 April 2003; accepted 9 February 2004 ...magnetite occurs as coarse grains intergrown with ilmenite, the later commonly occurring as either coarse...(Table 1) has been analyzed at Princeton University (USA) in 1989. The other samples were analyzed at the...and Geophysical Sciences of Princeton University (USA) in 1989. Concentrates of slightly sericitized plagioclase...North Shore volcanics Mean pole Eileen sandstone Middle River sandstone/shale Mean pole α95 (◦ ) Quality |  | | Report (issue) | | Districts .... _ Wisconsin ................. _ Michigan .................. . .5. SOUTHWESTERN l\ | | Report (issue) | | Origin of the Mariano Lake Uranium Deposit, McKinley County, New Mexico By Neil S. Fishman and Richard L. Reynolds...TABLES Table 1. Modal composition of the host sandstone.........................19 2. Carbon and oxygen... Origin of the Mariano Lake Uranium Deposit, McKinley County, New Mexico ABSTRACT The Mariano Lake uranium...typically suspended within a chemically reduced host sandstone such that upper and lower contacts of mineralized...mineralized rock roughly parallel bedding of the host sandstone (Granger and others, 1961). On the other hand |  | | Journal (article/letter/editorial) | | Igneous Complex Intrusion, Baraga Basin, Northern Michigan Kellie A. Donoghue,†Edward M. Ripley, and Chusi...Marquette-Baraga dike swarm in the Upper Peninsula of Michigan. The intrusion is likely related to the ~1.1 Ga...Ni-Cu-(PGE) occurrences. The Eagle deposit in Michigan is a small (0.1 km2) intrusion that hosts Ni sulfide...the Paleoproterozoic Baraga sedimentary basin of Michigan and is spatially associated with the Marquette-Baraga...aw en we Area of Figure 2 MBD BIC intrusion Michigan Eagle intrusion 1107 Wisconsin 0 50 N 100 |  | | Journal (article/letter/editorial) | | has been called the Bannock thrust from Bannock County, Idaho, where it is well displayed. Rocks of Cambrian...prominence of apatite and the titanium minerals—rutile, ilmenite, and in places titaniferous magnetite; by a peculiar...each other, occur in the northern part of Augusta County, cutting the Shenandoah group of limestones and...A narrow dike of peridotite occurs in Pendleton County which remained unnoticed by William B. Rogers and...Greene County from the locality of its first discovery in the Masontown coal field of Fayette County. L A |  | | Report (volume) | | (Lower Precambrian) Rocks in Western Gogebic County, Michigan GEOLOGICAL SURVEY BULLETIN Work done in...Lower Precambrian) Rocks in 'estern Gogebic County, Michigan Jy ROBERT GORDON SCHMIDT GEOLOGICAL SURVEY...cooperation with the \ Geological Survey Division., Michigan \Department of Natural Resources Geologic description...(lower Precambrian) rocks in western Gogebic County, Michigan. (Geological Survey bulletin ; 1407) Bibliography:...Stratigraphic Pre-Cambrian. 2. Geology Michigan Gogebic Co. I. Michigan. Geological Survey Division. II. Title |  | | Report (issue) | | concepts of a simple existence model for large sandstone uranium deposits, by W. I. Finch................Badlands-type molybdenum-uranium deposits in sandstone, by W. H. Raymond...............................or appear to originate from a cumulate layer, sandstone dike A typical layered stratiform complex consists...deposits occur in the Archean greenstone belts of Michigan, Wisconsin, and Minnesota. Look for Archean greenstone...Favorable target areas in the United States are in Michigan, Wisconsin, Minnesota, and North Dakota. Rift-related |
|
