 | | Report (issue) | | The Mountain Shear Zone, Northeastern Wisconsin A Discrete Ductile Deformation Zone Within the Early...Twelfth Ave. Chapter A The Mountain Shear Zone, Northeastern Wisconsin A Discrete Ductile Deformation...P.K. (Paul Kibler), 1918The Mountain shear zone, northeastern Wisconsin a discrete ductile deformation...Rock deformations Wisconsin Mountain Region. 2. Geology, Structural Wisconsin Mountain Region. 3. Geology...A2 Geologic setting A2 Mountain area A2 Geology A2 Regional structure A2 Mountain shear zone A2 Principal |  | | Journal (article/letter/editorial) | | 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...forgotten, abandoned, and overgrown. In this respect, Wisconsin represents a frontier state for the mineral collector...Racine (Scovil 1994), the pegmatites of Florence County (Koehier 1989) and the Wausau area (Falster 1987)...summarizes and highlights what has been found in Wisconsin in the past 150 years and points the way to new |  | | Report (issue) | | Rocks in the Early Proterozoic Mountain Shear Zone, Northeastern Wisconsin U.S. GEOLOGICAL SURVEY BULLETIN...Rocks in the Early Proterozoic Mountain Shear Zone, Northeastern Wisconsin By WARREN C. DAY, P.K. SIMS,...rocks in the Early Proterozoic Mountain Shear Zone, northeastern Wisconsin / by Warren C. Day, P.K. Sims...Geology Michigan. 6. Rock deformation Wisconsin. 7. Geology Wisconsin. I. Barovich, Karin M. II. Day, Warren...northern Michigan. VI. Title: Mountain Shear Zone, northeastern Wisconsin. VII. Series. VIII. Series: U |  | | Journal (article/letter/editorial) | | geochronology of the Wolf River batholith, north-central Wisconsin: Evidence for successive magmatism between 1484... University of Kansas, Lawrence, KS 66045-7613, USA Received 6 May 2006; received in revised form 15...Mesoproterozoic, anorogenic Wolf River batholith (WRB) of Wisconsin and the nearby Wausau syenite complex in order...Wolf River batholith; Wausau syenite complex; Wisconsin; Precambrian; Geochronology 1. Introduction The...anorogenic igneous complexes in north-central Wisconsin that intrude juvenile crust of the ca. 1850 Ma |  | | Journal (article/letter/editorial) | | Middle Precambrian Rocks in Eastern and Central Wisconsin ^ M THURMAN*^* Z. E. PETERMAN J Department...that crop out throughout eastern and central Wisconsin. Most of the data are consistent with an apparent...demonstration that most of the older Precambrian rocks in Wisconsin are in the age range of 1,800 to 1,900 m.y. old...Precambrian rocks exposed in eastern and central Wisconsin. Material from many published reports and graduate...areas and aspects of the Precambrian geology of Wisconsin have been compiled by Dutton and Bradley (1970) |  | | Journal (article/letter/editorial) | | Published by permission of the State Geologist of Wisconsin. Manuscript received by the Secretary February...720 E. T. THWAITES----BUKIED PRE-CAMBRIAN OF WISCONSIN I n t r o d u c t io n PREVIOUS INVESTIGATIONS...basement of Wisconsin when he began the study and collection of well records for the Wisconsin Geological...for in 1869 I. A. Lapham 2 published a map of Wisconsin on which he drew 100-foot contours on the base...America. STRUCTURE The pre-Cambrian rocks of Wisconsin form an elongated geanticline which strikes approximately |  | | Journal (article/letter/editorial) | | sediments................................ 239 Nemaha Mountain zone............................................questions of the validity of the theory of isostasy, mountain-building, the rigidity of the earth’s crust, depth...fault blocks, great intrusive masses, or axial mountain cores of matter heavier than the average, or of....... 2.31-2.49 *22, Michigan, Minnesota, and Wisconsin................... 1.82-2.85 Average, 2.21. *26................................ 2.C6 2.63 North Mountain, Maryland, Tuscarora....................... 2 |  | | Journal (article/letter/editorial) | | Syracuse University, Syracuse, New York 13244, USA (Received 30 July 2003; revised 7 November 2003)...parent material for the soil clays was probably biotite, but little remains in these soils. KEYWORDS:...weathering of phyllosilicates, primarily muscovite, biotite and chlorite, * E-mail: rapril@mail.colgate.edu...MATERIALS AND METHODS Regional setting The Adirondack Mountain region of New York State is a forested area of...deposits are thickest in valleys and thinnest on mountain tops and slopes. Elevations in the Adirondacks |  | | Book (volume) | | rocks are exposed as thick bands around the entire mountain system. The rising granite mass intruded the famed...an inexhaustible supply of cold artesian, Rocky Mountain snow melt water. Harney Peak is the crest of the...beds, excavations, etc.Selenite roses. BRULE COUNTY AREA: in the Oacoma zone of the Pierre Fm. On Elm...gray Barite rosette up to 5 or 6 inches. CAMPBELL COUNTY MOUND CITY, W to the Missouri R., regional hillsides...gravels, etc.petrified wood, wood opal. CORSON COUNTY LITTLE EAGLE: area ridges, slopes, stream beds |  | | Book | | ROCKHOUNDING Wisconsin A Guide to the State’s Best Sites ROBERT BEARD To the memory of my grandmother...rockhound that I ever knew, and she loved northern Wisconsin and geology. She would have been thrilled to...Beard, Robert D., author. Title: Rockhounding Wisconsin : a guide to the state’s best sites / Robert Beard...and preservation—Wisconsin—Guidebooks. | Minerals—Collection and preservation—Wisconsin—Guidebooks. Classification:...��������������������������������4 Geology of Wisconsin��������������������������������������������� |  | | Journal (article/letter/editorial) | | Minerals from Metamorphic and Igneous Rocks near Iron Mountain, Michigan by L. T. ALDRICH, G. L. DAVIS, and H...feldspar, muscovite, and biotite, K-Ar ages for hornblende, muscovite, biotite, and feldspar, and U-Pb...than 1,900 m.y. and younger than 2,700 m.y. (4) Biotite Rb-Sr and K-Ar ages and muscovite K-Ar ages were...(lowest to highest): feldspar K-Ar, biotite K-Ar, muscovite K-Ar, biotite Rb-Sr, zircon U239-Pb2°8, zircon...patterns of mineral ages. The area around Iron Mountain, Michigan, was particularly suitable for such |  | | Report (volume) | | greenstone-granite terrane 9 Early Proterozoic Wisconsin magmatic terrane and associated epicratonic rocks...Proterozoic rhyolite-granite terrane of southern Wisconsin 11 Quartzite of Baraboo interval 11 Early Proterozoic...Proterozoic rhyolite-granite terrane of southern Wisconsin 27 Early Proterozoic Central. Plains orogen 27...terrane (age, 2.6-2.7 Ga); (3) Early Proterozoic Wisconsin magmatic terrane (age, 1.83-1.89 Ga) and associated...Proterozoic rhyolite-granite terrane of southern Wisconsin (age, 1.76 Ga); (5) Early Proterozoic metamorphic |  | | Journal (article/letter/editorial) | | Photographs JanuarylFebruary: Copper, Ray, Pinal County, Arizona. Les Presmyk specimen, Jeff Scovil photo...quartz and albite, Tourmaline Queen mine, San Diego County, California. Houston Museum of Natural Science...claims, Farncomb Hill, Breckenridge district, Summit County, Colorado. Denver Museum of Natural History specimen...malachite ring, Flambeau mine, Ladysmith, Rusk County, Wisconsin. Dan Behnke specimen and photo. NovemberDecember:...calcite, and chalcopyrite, Sweetwater mine, Reynolds County, Missouri. Marvin Rausch specimen, Jeff Scovil |  | | Report (volume) | | 250-12,460 ft, sec. 14, T. 45 S., R. 27 E., Lee County, Fla. Named for the nearby Able Canal. The Able...H-20, northwest of Wattsville, northern Accomack County, Va. Reference sections: facies E and F, sand pits...Wattsville, Persimmon Point, and Accomack, Accomack County, Va. The informal Accomack beds of Mixon and others...and west of the Ames Ridge shoreline in Accomack County, Va., and are well developed from Wallops Station...Turnpike exchange, Annandale quadrangle, Fairfax County, Va. The Accotink Schist, here named, is the lower |  | | Journal (article/letter/editorial) | | forms (mountain ranges and peaks, lakes), and lithological units), topographical forms (mountain ranges...Western Pomerania Poland Wausau area, northern Wisconsin, the United States Val Passiria valley Merano...Central Inlier Trelawney county, Jamaica Alberta province, Canada Opava county, Czech Republic Kimbi region...formation First settlement and city Mountain shelter Hut with alpine road Mountain range, peak, and small village...Northern Wisconsin, the United States Syenite intrusions of Wausau syenite complex, Northern Wisconsin, the |  | | Report (issue) | | Brown Early Proterozoic tectonic style in centra! Wisconsin . R. S. Maass Lower Proterozoic stratified rocks... granites, and related rocks of southcentral Wisconsin, U.S.A. Eugene I. Smith The Proterozoic red quartzite...Proterozoic Symposium was held at the University of Wisconsin, Madison, on May 18-21, 1981, to dedicate the...Geophysics University of Wisconsin—Madison 1215 W. Dayton St. Madison, Wisconsin 53706 During the past...1914 and named for the Penokee Range in northern Wisconsin. Blackwelder originally assigned a post-Keweenawan |  | | Journal (article/letter/editorial) | | Department, 110 S. Madison St., Adrian, Michigan 49221, USA ABSTRACT Pegmatites containing rare elements can...Pegmatites Kings X, Wisconsin, USA McAllister pegmatite, Alabama, USA S. Maine pegmatites, USA Brown Derby,... Colorado, USA San Diego Co., California, USA Black Hills, South Dakota, USA Red Cross Lake, Manitoba...Colorado, USA South Platte, Colorado, USA Lake George, Colorado, USA Mt. Rosa/Stove Mtn., Colorado, USA Trout...District, Colorado, USA Mojave District, Arizona, USA Searchlight Dist., Nevada, USA Barringer Hill, Llano |  | | Report (issue) | | Geology of the Florence Area, Wisconsin and Michigan GEOLOGICAL SURVEY PROFESSIONAL Prepared under...Survey; University Extension The University of Wisconsin Geological and Natural History Survey; Michigan... PAPER 633 Geology of the Florence Area, Wisconsin and Michigan By CARL E. DUTTON GEOLOGICAL SURVEY...Survey; University Extension The University of Wisconsin Geological and Natural History Survey; Michigan...hlorite zone._______--__--_-------------------Biotite zone.______-_--__----------------------Garnet zone |  | | Report (volume) | | West Virginia... .Dr. I. C. White, Morgantown. Wisconsin.........Prof. W. 0. Hotchkiss, Madison. Wyoming...See Bauxite and Hallpysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found...commercial quantity or quality. Asphalt. Colbert County, small quantity has been shipped from near Leighton;...following localities: Bibb County, Pratts Ferry; Calhoun County, near Tampa; Clay County, T. 20, Pv. 7 E.; Jefferson...Jefferson County, at Elyton; Lee County, at Chewacla lime works; St. Clair County, at Gfeensport; Shelby |  | | Report (issue) | | 08 100.02 98.14 (1) Cumberland, Rhode Island, USA; corresponds to (Ca1:74 Mn0:17 Na0:10 K0:03 )§=2:04...)§=8:00 O22 (OH)2 : (2) Jackson County Iron Formation, Wisconsin, USA; by electron microprobe, corresponds...cummingtonite, quartz, magnetite, riebeckite, biotite, hematite (iron formations). Distribution: Probably...chemical analyses. In the USA, in the Jackson County Iron Formation, Wisconsin, and at Cumberland, Providence...Providence Co., Rhode Island. From Black Perry Mountain, New South Wales, Australia. At Prieska, Cape Province |  | | Journal (article/letter/editorial) | | butlateOligocene oresareintactrelative to theBlind Mountain stockandotherOligocene intrusions. Leadandsulfurisotope... MANHAIl'AN ELY VALLEY A MINE CASELTON ::•' USA 1-30 i !iii?i•OMETMINE PAN AMERICAN MINE MINE...rangefromlateJurassic to middleTertiary(Fig.3). Biotite, uousorezones.Its consistent stratigraphic position...•1hydrothermal "øAr/39Ar sericite/muscovite igneous biotite K-Ar igneoushornblende/amphibole whole rock ...agesoftheYuba Cretaceous and Late Cretaceous. Sericitized biotite from dike.Radioisotopic alteration agesof threequartzporphyry |  | | Book (volume) | | ASHTABULA COUNTY CONNEAUT, area pits, quarries, rd. cuts, etc.⎯cone-in-cone Calcite. CLERMONT COUNTY MILFORD...CLINTON COUNTY WILMINGTON, area of Todd’s Ford, a mineral deposit⎯Hematite. COSHOCTON COUNTY AREA, townships...CUYAHOGA COUNTY CHAGRIN FALLS (on Geauga Co. line), area quarries⎯oilstone. DELAWARE COUNTY DELAWARE...nodules⎯Pyrite (crystals sharply cubic). FRANKLIN COUNTY COLUMBUS, area countywide exposures of blue clay...HIGHLAND COUNTY SINKING SPRING, area ore deposit (most important in Ohio) ⎯Hematite. HOCKING COUNTY AREA |  | Holm, Daniel, Medaris, L. Gordon, McDannell, Kalin T., Schneider, David A., Schulz, Klaus, Singer, Bradley S., Jicha, Brian R. (2020) Growth, overprinting, and stabilization of Proterozoic provinces in the southern Lake Superior region. Precambrian Research, 339. 105587 doi:10.1016/j.precamres.2019.105587 | Journal (article/letter/editorial) | | Lincoln Street, Kent State University, Kent, OH 44242, USA. dholm@kent.edu. Keywords: geochronology, mafic...located in the southern Lake Superior region (Wisconsin, northern Michigan, east- central Minnesota, and...(Pietrzak-Renaud and Davis, 2014). In northern Wisconsin, the steep, south-dipping Niagara fault zone (NFZ)...calc-alkalic volcanic and plutonic arc rocks of the Wisconsin magmatic terranes (WMT) to the south. The WMT... Penokean terrane (Holm et al., 2005). In central Wisconsin (Fig. 1), aeromagnetic data indicate that the |  | | Journal (article/letter/editorial) | | Indian Queen mine ca. 1905 at Farlin, Beaverhead County. 208 ROCKS & MINERALS Downloaded by [University...mines at Butte in Silver Bow County and the Black Pine mine in Granite County have produced many fine crystal...Beaverhead County, the pegmatites of Jefferson County, and the Snowbird mine in Mineral County continue...Highlands Centennial Nugget in 1989 in Silver Bow County. The seventh largest gold nugget found in Montana;...should be sent to the author. LOCATIONS BY COUNTY Beaverhead County Anderson deposit, sec. 16, T. 12 S., R |  | Van Schmus, W.R., Schneider, D.A., Holm, D.K., Dodson, S., Nelson, B.K. (2007) New insights into the southern margin of the Archean–Proterozoic boundary in the north-central United States based on U–Pb, Sm–Nd, and Ar–Ar geochronology. Precambrian Research, 157 (1) 80-105 doi:10.1016/j.precamres.2007.02.011 | Journal (article/letter/editorial) | | KS 66045, USA Department of Geological Sciences, Ohio University, Athens, OH 45701, USA c Department... OH 44242, USA d Department of Geology, University of Washington, Seattle, WA 12345, USA Received 28...of the Precambrian basement in Minnesota–Iowa–Wisconsin indicates that an Archean–Proterozoic boundary...NW Iowa can be continued eastward into central Wisconsin and farther east as the Spirit Lake tectonic zone...ca. 1760 Ma granite–rhyolite suite of southern Wisconsin, south of the SLtz, Sm–Nd model ages are typically |
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