Atlas of Deformed and Metamorphosed Rocks from Proterozoic Orogens

Atlas of Deformed and Metamorphosed Rocks from Proterozoic Orogens
Author: T.R.K. Chetty,Wilbert Kehelpannala
Publsiher: Elsevier
Total Pages: 416
Release: 2021-08-20
Genre: Science
ISBN: 9780128179796

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Atlas of Deformed and Metamorphosed Rocks from Proterozoic Orogens is a richly illustrated reference book featuring over 660 full-color field images of a range of lithologies from some Proterozoic terrains that were subjected to multiple events of magmatism, deformation, metamorphism, and metasomatism. The Atlas focuses on amphibolite to granulite facies lithologies and associated ma?c-ultrama?c rocks from Proterozoic orogens of India, Sri Lanka, Botswana, South Africa, East Antarctica, and Western Australia. Each chapter in the book begins with a brief review of geology, including deformation and metamorphic history, along with a regional geological map to help readers to visualize the ?eld observations in the relevant geological context. Each image is accompanied by a concise description providing location, lithology, structural fabric, possible deformational history, metamorphic features, partial melting, metasomatism, and other important crustal processes. This Atlas is an important source of information for a broad range of earth scientists, graduate and undergraduate students, researchers, academicians, and other professionals. This book will form a great treasure to those geoscientists who never had an opportunity to visit any of the Proterozoic orogenic belts. Features over 660 full-color photographs representing typical lithologies and associated structural, metamorphic features, and other crustal processes from different Proterozoic orogens Highlights the significance of field photographs in advancing new knowledge which may provide pathways for new research Covers many important Proterozoic terranes of East Gondwana Presents regional geologic maps from each Proterozoic orogen

The National Atlas of Canada

The National Atlas of Canada
Author: Canada. Surveys and Mapping Branch. Geography Division
Publsiher: Unknown
Total Pages: 254
Release: 1974
Genre: Atlases
ISBN: UOM:39076005209072

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Proterozoic Orogens of India

Proterozoic Orogens of India
Author: T.R.K. Chetty
Publsiher: Elsevier
Total Pages: 426
Release: 2017-07-12
Genre: Science
ISBN: 9780128044810

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Proterozoic Orogens of India: A Critical Window to Gondwana provides a unique opportunity to understand a cross-section of the well-exposed and best-studied part of Earth’s crust and the processes of continental collision. It covers pulses of reworking processes and their impact on magmatism, metamorphism and deformational history of Proterozoic orogens vis-à-vis the supercontinental formation. The details of structural architecture, crustal blocks, shear zone systems, magmatism, metamorphism, geochemical and isotopic signatures, mineralization and tectonic models of all the Proterozoic orogens of India are discussed along with excellent illustrations reflecting the field-based, multi-scale structural and geological data sets. The spatial distribution, geometry, kinematics and transpressional strain of the shear zone systems (mostly suture zones), which are critical to all conceptual models dealing with tectono-metamorphic history of Proterozoic orogens of India, are also covered. The book summarizes and integrates the state-of -the art understanding of the structural architecture, lithological assemblages, petrological, geochemical, geochronological and geophysical aspects of the Proterozoic orogens of India. Includes a much needed state-of-the-art tectonic summary of the voluminous data that has emerged from the Protrozoic orogens of India in the last 2-3 decades Authored by a well-established expert with more than 30 years of experience in the field based, multi-scale structural geological studies of the ancient orogens of India Covers up-to-date reviews and models of Proterozoic orogens developed in the Indian shield over the past 2.5 billion years of Earth history

Atlas of the Textural Patterns of Metamorphosed transformed and Deformed Rocks and Their Genetic Significance

Atlas of the Textural Patterns of Metamorphosed  transformed and Deformed  Rocks and Their Genetic Significance
Author: S. S. Augustithis
Publsiher: Unknown
Total Pages: 424
Release: 1985
Genre: Metamorphic rocks
ISBN: UCSD:31822005669411

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Felsgestein - Geologie.

Atlas of Deformational and Metamorphic Rock Fabrics

Atlas of Deformational and Metamorphic Rock Fabrics
Author: G. J. Borradaile,M. B. Bayly,C. McA. Powell
Publsiher: Springer Science & Business Media
Total Pages: 550
Release: 2012-12-06
Genre: Science
ISBN: 9783642684326

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In May 1976 Lucian B. Platt organized a highly successful Penrose Confer ence on The Formation of Rock Cleavage at Bryn Mawr College in Penn sylvania, U. S. A. The meeting drew together about 70 specialists from both sides of the Atlantic and from Australasia, who contributed discussions on various aspects of rock cleavage and its formation. Even early in the meet ing it became clear to the participants that they lacked a common terminol ogy, that often the same technical word implied different things to different people and that observables and descriptors were loosely defined. In an at tempt to improve communication the present editors contacted about 190 workers after the conference with a view to compiling a set of photographs with captions to illustrate exactly what workers were talking about. As a re sult the compilation was published as a limited edition by an inexpensive offset process at the University of Tasmania. The success of that provisional edition of the Atlas of Rock Cleavage and the responses of the readers prompted us to make a more extensive collection of material, contact a wider range of workers and, with the support of Dr. Konrad Springer, to publish the present higher-quality reproduction of the contributors' plates.

Mineralogical and Structural Evolution of the Metamorphic Rocks

Mineralogical and Structural Evolution of the Metamorphic Rocks
Author: Francis J. Turner
Publsiher: Geological Society of America
Total Pages: 356
Release: 1948
Genre: Crystalline rocks
ISBN: 9780813710303

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Nature and Style of Deformation in the Foreland of the Early Proterozoic Penokean Orogen Northern Michigan

Nature and Style of Deformation in the Foreland of the Early Proterozoic Penokean Orogen  Northern Michigan
Author: J. S. Klasner,Richard W. Ojakangas,K. J. Schulz,Geological Survey (U.S.),Gene L. LaBerge
Publsiher: Unknown
Total Pages: 32
Release: 1991
Genre: Geology
ISBN: UOM:39015095006998

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Evidence for Early Proterozoic north-verging folding and thrusting in the continental foreland of the Penokean orogen is present in two widely separated areas in northern Michigan. In the eastern part of the exposed orogen, asymmetric to over-turned folds in the Early Proterozoic Michigamme Formation suggest an initial (D1) phase of possibly north verging thin-skinned deformation. A second phase (D2 ) is characterized by a more thick skinned deformation consisting of northward thrusting of Archean gneiss and overlying Early Proterozoic quartzite along ductile thrust faults. Crosscutting shear zones indicate a third phase (D3 ) of deformation involving east- northeast thrusting of Archean gneiss. Thick-skinned deformation D2 and D3 phases include spaced fracture cleavage, kink folds, and lineations in D1, foliation surfaces. Near the west end of the exposed orogen in Michigan, bedding-cleavage relationships in the Early Proterozoic Tyler Formation also indicate northward tectonic transport. These structures, which are interpreted as D1 lie along the north edge of the Archean Puritan batholith and associated Archean greenstone. The north-verging structures in the northern Michigan segment of the Penokean orogen were formed approximately 1,850 Ma during collision of the Wisconsin magmatic terranes with the continental foreland of Michigan, Wisconsin, and Minnesota.

Petrology of the Metamorphic Rocks

Petrology of the Metamorphic Rocks
Author: R. Mason
Publsiher: Springer Science & Business Media
Total Pages: 258
Release: 1990-10-31
Genre: Science
ISBN: 0045520275

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There has been a great advance in the understanding of processes of meta morphism and of metamorphic rocks since the last edition of this book appeared. Methods for determining temperatures and pressures have become almost routine, and there is a wide appreciation that there is not a single temperature and pressure of metamorphism, but that rocks may preserve, in their minerals, chemistry and textures, traces of their history of burial, heating, deformation and permeation by fluids. However, this excit ing new knowledge is still often difficult for non-specialists to understand, and this book, like the first edition, aims at enlightenment. I have concen trated on the interpretation of the plate tectonic settings of metamorphism, rather than following a geochemical approach. Although there is an impress ive degree of agreement between the two, I believe that attempting to discover the tectonic conditions accompanying rock recrystallization will more readily arouse the interest of the beginner. I have used a series of case histories, as in the first edition, drawing on my own direct experience as far as possible. This m