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| sampl,~ of metapelitic rocks from the Michigamme Formatior: (Michigan, U.S.A.). Evidence, is presented to...that the reaction: 4 muscovlto+3(Fe,Mg)~÷~ 3 staurolite+6 quartz+4K++2H+ produces .~:taurolite lmikiloblasts...lmikiloblasts Jn which the estimated quartz to staurolite ratio is 1:2.28. Kodjopa A ttoh, Department oJ Geo/ogy...of the Michigamme Formation are examined. Isograd-defining reactions in the Michigamme Formation The Michigamme...Michigamme Formation consists predominarRly of greywackes and slates and their metamorphic equivalents |
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| 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...Survey Division, Michigan Dept. of Conservation. Bibliography: p. 108--110. 1. Geology-Michigan-Iron Co. Iron...Iron County, Michigan. (Series) QE75.B9 no. 1077 ----Copy 2. 1. Title: Lake Mary quadrangle, 557.74975 |
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| the Early Proterozoic Michigamme Formation and Goodrich Quartzite, Northern Michigan Regional Stratigraphic...the Early Proterozoic Michigamme Formation and Goodrich Quartzite, Northern Michigan Regional Stratigraphic...the Early Proterozoic Michigamme Formation and Goodrich Quartzite, northern Michigan: regional stratigraphic...Stratigraphic Proterozoic. 2. Geology Michigan. 3. Michigamme Formation (Mich. and Wis.). 4. Goodrich Quartzite...field description, Michigamme Formation R4 Slate members R4 Bijiki Iron-formation Member R7 Drill hole |
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| (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 |
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| 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...Precambrian rocks._______________________ Quinnesec Formation._______________________ Description. ___________________________ |
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| 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 |
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| THREE LAKES 7 1/2 MINUTE QUADRANGLE BARAGA COUNTY, MICHIGAN by John S. Klasner W. F. Cannon U.S. Geological...cooperation with Geological Survey Division, Michigan Department of Natural Resources > UT S. Geological... Locally largely altered to chlorite. Michigamme Formation- upper slate member (Precambrian X) Basal...in places with graded bedding. Many beds are staurolite-rich and 1. less commonly andalusite-rich....foot or more long are common. Michigamme Formation-Bijiki Iron-formation member (Precambrian X). Generally |
 | Sims, P.K., Peterman, Z.E., Prinz, W.C., Benedict, F.C., Klasner, J.S. (1984) Geology, geochemistry, and age of Archean and early Proterozoic rocks in the Marenisco-Watersmeet area, northern Michigan; and Geologic interpretation of gravity data, Marenisco-Watersmeet area, northern Michigan. Professional Paper 1292ab. US Geological Survey doi:10.3133/pp1292ab | Report (issue) |
| Rocks in the Marenisco-Watersmeet Area, Northern Michigan and Geologic Interpretation of Gravity Data,... Marenisco-Watersmeet Area, Northern Michigan GEOLOGICAL SURVEY PROFESSIONAL PAPER 1292-A, B Geology...Rocks in the Marenisco-Watersmeet Area, Northern Michigan By P. K. SIMS, Z. E. PETERMAN, W. C. PRINZ, and...Gravity Data, Marenisco-Watersmeet Area, Northern Michigan By J. S. KLASNER and P. K. SIMS CONTRIBUTIONS...rocks in the Marenisco-Watersmeet area, Northern Michigan. (Contributions to the geology of the Lake Superior |
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| Allochthonous Terranes of the Penokean Orogeny in Upper Michigan Comparisons with Northern Appalachian Tectonics...Allochthonous Terranes of the Penokean Orogeny in Upper Michigan Comparisons with Northern Appalachian Tectonics...allochthonous terranes of the Penokean orogeny in upper Michigan comparisons with northern Appalachian tectonics...Stratigraphic Precambrian. 2. Geology, Structural Michigan. I. Title. II. Series. III. Series: Contributions...Acknowledgments Q3 Structural setting in northern Baraga County Q4 Structures in the Huron River parautochthon |
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| PART OF THE MICHIGAMME 7 1/2 MINUTE QUADRANGLE, MARQUETTE AND BARAGA COUNTIES, MICHIGAN by John S....in cooperation with Geological Survey Division, Michigan Department of Natural Resources U. sTGeoiogical...island in Lake Michigamme in S 1/2, Sec. 27, T. 48 N., R. 30 W. Michigamme Formation- upper slate member...schist, black to gray quartzite, and siltstone. Staurolite and andalusite are commonly concentrated in...silicate concretions also define bedding. I Michigamme Formation- Bijiki Iron-format ion Member (Precambrian |
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| the Iron River-Crystal Falls District, Iron County Michigan GEOLOGICAL SURVEY PROFESSIONAL Prepared...cooperation with the Geological Survey Division of the Michigan Department of Conservation PAPER 570 Geology...the Iron River-Crystal Falls District, Iron County Michigan By H. L. JAMES, C. E. BUTTON, F. J. PETTIJOHN...cooperation with the Geological Survey Division of the Michigan Department of Conservation UNITED STATES GOVERNMENT...in the Brule River area ___________ Saunders Formation ______________________ Description. ___________________________ |
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| Gilbert N. Hanson An assessment of the utility of staurolite in U-Pb dating of metamorphism Received: 14...are then compared to 21 new U-Pb analyses of staurolite of varying composition from a variety of localities...much of the measured U and Pb is derived from staurolite itself and evaluate any possible correlation...constraints on closure temperature to Pb diusion in staurolite; (5) evaluate how meaningful U-Pb ages can better...calculated for the low U/Pb ratio minerals. In the staurolite fractions analyzed U abundances range from 0 |
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| coherentregionalpicture nesota and in northern Wisconsin and Michigan. (Precambrian X) rocksform consistentwith the...geologyin MiddlePrecambrian Minnesota and northern Michigan. Recently pub- the surfacebedrockin much of easternMinnesota...geochronologyof northern and in northern Wisconsin and Michigan. Except in centralWisWisconsin(Van Schmuset al...Rocksbelonging to the gneissterraneoccurin the Michigan by the U.S. GeologicalSurvey, started Minnesota...Geology Regionalsetting the Upper Peninsulaof Michigan(Jameset al., 1961; Cannonand Simmons,1973; Sinasand |
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| exposures of the Marquette Range Supergroup in Michigan and Wisconsin, and the older H u r o n i a n Supergroup...,*\Xm«' Xb -Xi'- Am \ \ \ Basalt and iron-formation Figure 2. Gneiss and amphibolite ' Aqn,, Gneiss...foliation Michigamme and Copps Formations Ironwood Iron-formation, Emperor Volcanic and Palms Formation Metagraywacke...tectonic zone, Marenisco-Watersmeet area, northern Michigan. Downloaded from https://pubs.geoscienceworld...RANGE PROTEROZOIC X Virginia Formation .5? o ESI I Biwabik Iron-formation Xp Pokegama Quartzite Animik |
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| Test-Drilling The Penokean Orogeny in Minnesota and Upper Michigan A Comparison of Structural Geology U.S. GEOLOGICAL...MOREY The Penokean Orogeny in Minnesota and Upper Michigan A Comparison of Structural Geology By TIMOTHY...Morey. The Penokean orogeny in Minnesota and upper Michigan a comparison of structural geology / by Timothy... Plate tectonics. 5. Geology Michigan. 6. Geology, Structural Michigan. I. Morey, G.B. II. Hoist, Timothy...Timothy B. Penokean orogeny in Minnesota and upper Michigan a comparison of structural geology. 1991. III |
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| DIRECTOR THE MARdUETTE IllON-BEARING Mim OF MICHIGAN J^TJ^Js^S CHARLES RICHARD VAN HISE aud WILLIAM... Microscopical 224 Relations to underlying formation 230 Thickness 231 Interesting localities ...Thickness 299 Interesting localities 300 300 Michigamme area Broken Bluffs - 301 Area west of Teal... Thickness 322 322 Interesting localities Michigamme area 322 Nonpareil mine 324 Siamo Hills ...half of T. 47 N., R. Section VI. — The Negaunee formation 26 W 327 328 329 Relations to eruptives Distribution |
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| subtidal-shelf deposition of Superior-type banded iron-formation . Richard W. Ojakangas Lower Proterozoic volcanic...Great Lakes region but also for providing in¬ formation on the nature of early Proterozoic tectonics,...arranged geographically, from the upper peninsula of Michigan and adjacent Wisconsin, to north central Wisconsin...Precambrian rapakivi massif in north Wisconsin, USA: Precambrian Research, v. 7, p. 287-324. Blackwelder...early Proterozoic (Precambrian X) of northern Michigan [abs.]: Geological Society of America, Ab¬ stracts |
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| of the Menominee Iron-Bearing District Dickinson County, Michigan and Florence and Marinette Counties...cooperation with the Geological Survey Division, Michigan Department of Conservation PAPER 513 Geology...of the Menominee Iron-Bearing District Dickinson County, Michigan and Florence and Marinette Counties,...cooperation with the Geological Survey Division, Michigan Department of Conservation 'I UNITED STATES...characteristics _________________ _ Quinnesec Formation __________________ _ Previous investigations ______________ |
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| terrane within the study area has distinct crust formation ages. These terranes and ages, from south to north...craton that is exposed in Minnesota, Wisconsin, and Michigan (Goldich and others, 1961; Cannon, 1973; Sims...1955). LF, McG, HM, LP, NO represent Little Falls Formation, McGrath Gneiss, Hillman Migmatite, Long Prairie...the continental margin prism in Wisconsin and Michigan, Barovich and others (1989) found that the Nd...province. However, the Nd isotope character of Michigamme Formation, the uppermost unit of the Marquette Range |
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| ... . Ely Greenstone ......... . Soudan Iron-Formation Laurentian Intrusives .... . Dikes .............the Name .. . Ogishke Conglomerate Agawa Iron-Formation. Principal Rock Types .. . Structure and Thickness.... . Pokegama Formation ............... . Biwabik Formation ....... . Virginia Formation .. Relationships............... . Thomson Formation ...................... . Puckwunge Formation ...... . North Shore Volcanic... .......... Fond du Lac Formation . . . . . . . ........ Hinckley Formation ................ Ages for |
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| map of part of northern Wisconsin and adjacent Michigan ...................... 2. Concordia diagram of...Puritan batholith, northwestern Wisconsin and Michigan ........ 7. Rubidium-strontium isochron diagram...Late Archean age. They differ from rocks in the Michigan segment of the batholith in having been deformed...those described in the western part of northern Michigan (Schmidt, 1976), and accordingly should be included...northwestern Wisconsin differ from those in the Michigan segment of the batholith, however, in having been |
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| DIRECTOR THE CMSTAL FALLS IRON-IARING DISTRICT OF MICHIGAN liY J. MORGAN CLEMENTS and HENRY LLOYD SMYTH...68 Exploration 73 69 70 72 —The Hemlock formation 73 Distribution, exposures, and topography ...I'agn. Normal scdiinontaiit^s (if the Hemlock formation Economic products Building and ornamental stones...Petrographical characters Section A'll. The Groveland formation Distribution, exposures, and topography Petrographical...The Michigamme Mountain and Fence River areas — The Archean Section II. — The Sturgeon formation Section |
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| Regionally metamorphosed pelitic schists and iron formation minerals (quartz, magnetite, and hematite), and...in Fig. 2, PELiTlC -~ l SCXISTS BlOTlTE a STAUROLITE A SILLIMANITE v SILL. HORNFELS x AMPHIBOLITE...in the Michigamme formation compared with the thermal effect of an intrusion. Northern Michigan. J. Geol...~rn~~~hjrn. Aeta 46,249 f-2500. WASSON J. T. (1972) Formation of ordrnary chondrites. Rev. Geophys. Space Phys |
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| Louis, One-Brookings Drive, Saint Louis, MO 63130, USA 3 Present address: Department of Earth Sciences...parameters were used to calculate phengite and staurolite solid solutions. Speciation models by Holland...reported for low-grade metapelites of the Michigamme Formation; it was ascribed to the dissolution of fine-grained...in deep Wilcox Group mudstones, Texas Gulf Coast, USA. Marine and Petroleum Geology, 27, 1804–1818. Den...270–286. Eberl, D. D. 1993. Three zones for illite formation during burial diagenesis and metamorphism. Clays |
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| 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..._______________________________ Enchantment Lake Formation.. _ _____________ Definition, distribution, and |
