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Wednesday, August 5, 2020 | History

4 edition of Precambrian Geology of the Tobacco Root Mountains, Montana (Special Papers (Geological Society of America), 377.) found in the catalog.

Precambrian Geology of the Tobacco Root Mountains, Montana (Special Papers (Geological Society of America), 377.)

  • 237 Want to read
  • 17 Currently reading

Published by Geological Society of America .
Written in English

    Subjects:
  • Science,
  • Montana,
  • Earth Sciences - Geology,
  • Tobacco Root Mountains,
  • Science/Mathematics,
  • Precambrian,
  • Geology,
  • Geology, Stratigraphic

  • Edition Notes

    ContributionsJohn B. Brady (Editor), Henry Robert Burger (Editor), John T. Cheney (Editor), Tekla A. Harms (Editor)
    The Physical Object
    FormatPaperback
    Number of Pages256
    ID Numbers
    Open LibraryOL8026571M
    ISBN 100813723779
    ISBN 109780813723778

    Geologic map of the central portion of the Tobacco Root Mountains, modifi ed from Vitaliano et al. (). Meta-ultramafi c bod- ies in and around the Spuhler Peak Metamorphic Suite are shown in black. GENERAL GEOLOGY The Precambrian core of the Tobacco Root Mountains consists mainly of felsic to mafic gneiss and amphibolite, within which occur some strata of recog­ nizably sedimentary origin, such as dolomite marble and quartzite. Throughout this assemblage the metamorphic grade is high, and structural complexity is the rule.

    Hess, D. F., , Geology of Pre-Beltian Rocks in the Central and Southern Tobacco Root Mountains, with Reference to Superposed Effects of the Laramide-Age Tobacco Root Batholith: PhD dissertation, Indiana University, Bloomington, Indiana, USA, p. Google Scholar. Yellowstone National Park offers an amazing array of geologic features--hot springs, active tectonics, Eocene and Quaternary volcanism--and a largely unexplored sequence of Precambrian rocks along its northern border and adjacent exposures in the rugged Beartooth Mountains of Montana and Wyoming.

    The 8th International Conference on Basement Tectonics was held in Butte, Montana, August , Historically, basement tectonics conferences have focused on such topics as reactivation of faults. M. Jennifer Sincock's 3 research works with 29 citations and reads, including: Geology and geochemistry of the Spuhler Peak Metamorphic Suite.


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Precambrian Geology of the Tobacco Root Mountains, Montana (Special Papers (Geological Society of America), 377.) Download PDF EPUB FB2

The Tobacco Root Mountains are located near the northwestern margin of the Archean Wyoming province. This position places the Archean rocks of the Tobacco Root Mountains approximately midway between the Great Falls tectonic zone, which many believe marks the collisional boundary between the Hearne and Wyoming provinces, and the Madison mylonite zone, 3-km-wide shear zone.

In situ ion microprobe Pb/ Pb dating of monazite from Precambrian metamorphic suites, Tobacco Root Mountains, Montana Author(s) John T. Cheney. Try the new Google Books. Check out the new look and enjoy easier access to your favorite features.

Try it now. No thanks. Try the new Google Books Get this book in print. GSA Store; ; Barnes&; Books-A-Million; IndieBound; Find in a library; All sellers» Precambrian Geology of the Tobacco Root Mountains, Montana, Issue 3/5(1).

Preface --Overview --Dedication --Acknowledgements --General geology and tectonic setting of the Tobacco Root Mountains / H. Robert Burger --Geochemistry and petrology --Geochemistry of quartzofeldspathic gneisses and metamorphic mafic rocks of the Indian Creek and Pony-Middle Mountain Metamorphic Suites, Tobacco Root Mountains, Montana / David.

Book Chapter In situ ion microprobe Pb/ Pb dating of monazite from Precambrian metamorphic suites, Tobacco Root Mountains, Montana Author(s). Textures and mineral assemblages of metamorphic rocks of the Tobacco Root Mountains are consistent with metamorphism of all rocks during the Big Sky orogeny ( Ga) at relatively high pressure (P > GPa) followed by differential reequilibration on a clockwise P-T path at lower pressures (– GPa).The highest pressures are documented by coarse-grained kyanite and orthopyroxene in.

"Character and origin of Precambrian fabrics and structures in the Tobacco Root Mountains, Montana", Precambrian Geology of the Tobacco Root Mountains, Montana, John B. Brady, H. Robert Burger, John T. Cheney, Tekla A. Harms.

The basis for the name Tobacco Root is unclear. John Willard says "Indians and early trappers found a root in these mountains that, when dried and mixed with larb, made a suitable substitute for real tobacco. The root was a species of mullein.". The term "tobacco root" is also an old name for species of arnica; native and European-introduced arnica are wildflowers in Western Montana, including.

The geology of Montana includes thick sequences of Paleozoic, Mesozoic and Cenozoic sedimentary rocks overlying ancient Archean and Proterozoic crystalline basement rock. Eastern Montana has considerable oil and gas resources, while the uplifted Rocky Mountains in the west, which resulted from the Laramide orogeny and other tectonic events have locations with metal ore.

Geochronology and geochemistry of Precambrian gneisses, metabasites, and pegmatite from the Tobacco Root Mountains, northwestern Wyoming craton, Montana Thomas E.

Krogh, a Sandra L. Kamo, a Thomas B. Hanley, b David F. Hess, c Peter S. Dahl, d Robert E. Johnson c. Precambrian Geology of the Tobacco Root Mountains, Montana Edited by John B. Brady Department of Geology Smith College Northampton, Massachusetts USA H. Robert Burger Department of Geology Smith College Northampton, Massachusetts USA John T.

Cheney Department of Geology Amherst College Amherst, Massachusetts USA Tekla A. Harms. The Proterozoic geology of the Tobacco Root Mountains can be integrated with coeval features of the geology of the northern Wyoming province to outline a north.

1 folded col. map in pocket inside back cover: Geologic map of southern Tobacco Root Mountains, Madison County, Montana / compiled by Charles J. Vitaliano and William S. Cordua. ISBN (pbk.) (pbk.). The Tobacco Root Mountains of southwestern Montana (Fig.

1) are cored by metamorphic rocks of the Wyoming prov-ince that are believed to have a geologic history spanning at least 3 Ga.

Sensitive high-resolution ion microprobe (SHRIMP) dat-ing of individual Tobacco Root Mountain zircons by Mueller et. During late Precambrian time three sets of mafic dikes were emplaced in southwestern Montana south of the east–west Helena embayment of the Belt Basin. The oldest dikes, intruded approximately Ma ago into both the southern Tobacco Root Mountains and the adjoining Ruby Range, are low K.

Buy Precambrian Geology of the Tobacco Root Mountains, Montana (Geological Society of America Special Papers) on FREE SHIPPING on qualified orders Precambrian Geology of the Tobacco Root Mountains, Montana (Geological Society of America Special Papers): Brady, John B., Burger, Henry Robert, Cheney, John T., Harms, Tekla A.

Additional Physical Format: Online version: James, H. (Harold Lloyd), Bedded Precambrian iron deposits of the Tobacco Root Mountains, southwestern Montana. Get this from a library. Bedded Precambrian iron deposits of the Tobacco Root Mountains, southwestern Montana.

[H L James; Geological Survey (U.S.),]. Compare book prices from overbooksellers. Find Precambrian Geology of the Tobacco Root Mountains, M () by Brady, John B.; Burge. Series: Special paper ; Special papers (Geological Society of America) ^A Partial contents: General geology and tectonic setting of the Tobacco Root Mountains / H.

Robert Burger -- Geochemistry and petrology -- Geochronology -- Explanatory text to accompany geologic map of southern Tobacco Root Mountains, Madison County, Montana (reprinted) / Charles J.

Vitaliano. Proterozoic metamorphism of the Tobacco Root Mountains, Montana John T. Cheney Department of Geology, Amherst College, Amherst, MassachusettsUSA John B. Brady Department of Geology, Smith College, Northampton, MassachusettsUSA Kara A. Tierney Kathleen A.

DeGraff Heidi K. Mohlman Jessica D. Frisch Christine E. Hatch Michael L.Includes folded col. map in pocket inside back cover: Geologic map of southern Tobacco Root Mountains, Madison County, Montana / compiled by Charles J. Vitaliano and William S. Cordua. Includes bibliographical references.

Subject headings Geology, Stratigraphic--Precambrian. Geology--Montana--Tobacco Root Mountains. ISBN (pbk.).Author: Philip B. King Publisher: ISBN: Size: MB Format: PDF, ePub, Mobi View: Get Books. Precambrian Geology Of The United States Explanatory Text To Accompany The Geologic Map Of The United States by Philip B.

King, Precambrian Geology Of The United States Books available in PDF, EPUB, Mobi Format. Download Precambrian Geology Of The United States books.