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Author: N.C. Pant
Publisher: Geological Society of London
ISBN: 1786203197
Category : Science
Languages : en
Pages : 362
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Book Description
The Proterozoic aeon involved at least three major continental readjustments. India and Antarctica appear in most models of supercontinent reconstructions, but their relative position has been the subject of debate. High-resolution petrological and geochronological data, especially from the Proterozoic mobile belts, provide the principal means of resolving this issue. The ice-covered nature of Antarctica allows only limited access to the rocks, and then only in coastal tracts, so detailed studies in more accessible Proterozoic terrains in India assume added significance. This volume, a follow-up to the XII International Symposium on Antarctic Earth Science, Goa (a SCAR symposium), provides new data from selected locations in east Antarctica (Enderby Land and Dronning Maud Land) and from India, including the Eastern Ghats Mobile Belt (EGMB), Chota Nagpur Gneissic Complex, the Khasi Hills and the Aravalli–Delhi Mobile Belt. The presented geochronological data, constrained by petrological studies, are expected to provide new insights, especially into the EGMB–east Antarctica connection and the rate of continental readjustments in the post-Rodinia break-up.
Author: N.C. Pant
Publisher: Geological Society of London
ISBN: 1786203197
Category : Science
Languages : en
Pages : 362
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Book Description
The Proterozoic aeon involved at least three major continental readjustments. India and Antarctica appear in most models of supercontinent reconstructions, but their relative position has been the subject of debate. High-resolution petrological and geochronological data, especially from the Proterozoic mobile belts, provide the principal means of resolving this issue. The ice-covered nature of Antarctica allows only limited access to the rocks, and then only in coastal tracts, so detailed studies in more accessible Proterozoic terrains in India assume added significance. This volume, a follow-up to the XII International Symposium on Antarctic Earth Science, Goa (a SCAR symposium), provides new data from selected locations in east Antarctica (Enderby Land and Dronning Maud Land) and from India, including the Eastern Ghats Mobile Belt (EGMB), Chota Nagpur Gneissic Complex, the Khasi Hills and the Aravalli–Delhi Mobile Belt. The presented geochronological data, constrained by petrological studies, are expected to provide new insights, especially into the EGMB–east Antarctica connection and the rate of continental readjustments in the post-Rodinia break-up.
Author: Sanjib Chandra Sarkar
Publisher: Cambridge University Press
ISBN: 1107079977
Category : Science
Languages : en
Pages : 1137
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Book Description
Crustal evolution means the resultant changes that the Earth's crust has gone through in its geologic past affected by changes in the mantle-crust system, the atmosphere, the hydrosphere and the biosphere. Metallogeny is the genesis of metallic mineral deposits. Both the terms are used in the book in their conventional sense, but keeping in mind an Indian context. This book is the first of its kind to document in detail the nature, origin and evolution of mineral deposits in India and is contextualized in local, regional and global geology. The book is unique in that it combines both metallogeny and crustal evolution that were hitherto treated as stand-alone topics. The exhaustive chapters in the book carry detailed case studies of the distribution and occurrence of ores. The book would be useful to students of advanced geology, researchers, teachers, planners and global metallogeneticists around the world.
Author: A.K. Jain
Publisher: Springer Nature
ISBN: 3030428451
Category : Science
Languages : en
Pages : 594
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Book Description
This books documents the salient characters of the tectonic evolution of the Indian subcontinent. It showcases the well investigated subcontinent of Gondwana. The book is linked to an updated geological and tectonic map of this region on 1:12,000,000 in scale. The Indian subcontinent displays almost uninterrupted and unique the geological history since about Eo-Archean (~3800 Ma) to recent, with the development of many Proterozoic deformed and metamorphosed fold belts around Archean nuclei, and enormously thick undeformed platform deposits. After their stabilization during late Proterozoic, the subcontinent underwent Paleozoic rifting and deposition of coal-bearing thick sequences, followed by enormously-thick outpouring of Deccan volcanics as a consequence of huge mantle plume. The youngest event in its evolution is the Cenozoic Himalayan Orogenic Mountains, spanning the area between Nanga Parbat and Namcha Barwah; a part of which extends both in Pakistan and Myanmar.
Author: Ram Swaroop Sharma
Publisher: Atlantic Publishers & Dist
ISBN: 9788126904365
Category : Science
Languages : en
Pages : 416
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Book Description
This Book Is In Commemoration Of The Life And Work Of Professor R.S. Sharma, An Eminent Metamorphic Petrologist And Mineralogist. It Incorporates The Latest Developments In The Field Of Metamorphic Petrology. The Volume Is Divided Into Five Sections, Namely Metamorphism, Fluid Processes, Himalayan Metamorphism, Uhp/ Uht Metamorphism, And Geochronology & Geochemistry. The Book Would Be Of Great Interest To All Geoscientists Concerned With Metamorphic Processes And Crustal Evolution.The Main Topics Covered In The Book Include:The Granulite Facies, Crustal Melting, And Prograde And Retrograde Phase Equilibria In Metapelites At The Amphibolite To Granulite Facies Transition Tim E. Johnson And M. Brown; Evolution Of Early Proterozoic Metamorphism Within Tim-Yastrebovskaya Paleorift, Voronezh Crystalline Massif, East-European Platform: Metapelite Systematics, Phase Equilibrium, And P-T Conditions Tatyana N. Polyakova, Konstantin A. Savko, Vyacheslav Yu. Skryabin; Metamorphosed Carbonate-Evaporitic Rocks At Transition Of High-Pressure Amphibolite/Eclogite Facies Conditions: A Case Study From The Sare Sang Lapis-Lazuli Deposit (Afghanistan) Shah Wali Faryad; Petrogenesis And Evolution Of Peña Negra, An Anatectic Complex In The Spanish Central System M. Dolores Pereira Gómez; Polymetamorphism In The Archaean Gneiss Complex Of Shivpura Gyangarh, District Bhilwara, Rajasthan H. Thomas; Ibc Granulite In Clockwise Pressure-Temperature Regime: A Case From The Orissa Sector Of Eastern Ghats Mobile Belt S.C. Patel; Carbonates In Feldspathic Gneisses From The Granulite Facies: Implications For The Formation Of Co2-Rich Fluid Inclusions William Lamb; Growth And Exhumation Of The Lower Crust Of The Kohistan Arc, Nw Himalayas T. Yoshino And T. Okudaira; Evidence Of Upper Amphibolite Facies Metamorphism From Almora Nappe, Kumaun Himalayas Mallickarjun Joshi And A.N. Tiwari; Is Muscovite In The Mandi Granite Primary? A Guide To Distinction Between The Lower Paleozoic And Tertiary Granites Of The Himalayas S. Nag, S. Sengupta And P.K. Verma; Modeling Of P-T-T Paths Constrained By Mineral Chemistry And Monazite Dating Of Metapelites In Relationship To Mct Activity In Sikkim, Eastern Himalayas Chandra S. Dubey, E.J. Catlos And B.K. Sharma; Uhp Metamorphism And Continental Subduction/Collision J.G. Liou, T. Tsujimori, I. Katayama And S. Maruyama; Uht Metamorphism And Continental Orogenic Belts A. Mohan, I.N. Sharma And P.K. Singh; Single Zircon Dating Of Hypersthene-Bearing Granitoid From Balaram-Abu Road Area, Southern Part Of The Aravalli Mountains, Nw India: Implications For Malani Magmatism Related Thermal Event A.B. Roy, Alfred Kröner, Vivek Laul And Ritesh Purohit; Geochemistry And Petrogenesis Of The High Grade Granulites From Kodaikanal, South India D. Prakash And H. Thomas; The Lower Crust Of The Indian Shield: Its Characteristics And Evolution T.M. Mahadevan
Author: K.C. Condie
Publisher: Elsevier
ISBN: 0080869092
Category : Science
Languages : en
Pages : 553
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Book Description
As a final product of the International Geological Correlation Program (IGCP) Project 217, this volume brings together significant advances in the understanding of Proterozoic crustal evolution. This IGCP Project focussed on nine research objectives: 1) Comparison of Archean and Proterozoic supracrustal assemblages to more fully understand differences between Archean and post-Archean tectonic regimes; 2) To more fully understand the geochemical differences between Archean and post-Archean sediments and to evaluate the various factors that control sediment composition; 3) From combined U/Pb zircon and whole-rock Sm/Nd studies, to see if the apparent 2.4-2.0 continental crust "generation gap" is real; 4) To employ new techniques in the dating of individual zircons to more fully understand Proterozoic tectonic history and the role of crustal reworking; 5) From trace element ratios and Nd isotopic data from basalts, to better understand Proterozoic mantle evolution; 6) To encourage more detailed studies of the anorogenic granite-anorthosite association to better understand its origin and significance in terms of crustal evolution; 7) From combined Nd, Pb, and Sr isotopic data, to more precisely estimate the amount of new continental crust formed during the Proterozoic; 8) To encourage joint P-T and geochronological studies of Proterozoic and high-grade terranes to better understand Proterozoic orogenesis: and 9) To try and understand why hydrothermal precious metal deposits are relatively rare in the Proterozoic compared to both the Archean and the Phanerozoic. The book should be of interest to professionals in the geosciences (especially geochemists, petrologists and structural geologists) and graduate students in the same fields.
Author: S.L. Harley
Publisher: Geological Society of London
ISBN: 1862393672
Category : Science
Languages : en
Pages : 241
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Book Description
Antarctica preserves a rock record that spans three and a half billion years of history and has a remarkable story to tell about the evolution of our Earth, from the hottest crustal rocks yet found in an orogenic system, to the assembly and breakup of Gondwana in the Phanerozoic. This volume highlights our improved understanding of the tectonic events that have shaped Antarctica and how these potentially relate to supercontinent assembly and fragmentation. The internal constitution of the East Antarctic Shield is assessed using information available from the basement geology and from detritus preserved as Mesozoic sediments in the Trans Antarctic Mountains. Accretionary orogenesis along the proto-Pacific margin of Antarctica is examined and the volumes of intracrustal melting compared with juvenile magma additions in these complex orogenic systems assessed. This special volume demonstrates the diversity of approaches required to elucidate and understand crustal evolution and evaluate the supercontinent concept.
Author: Kent C. Condie
Publisher: Elsevier
ISBN: 1483100146
Category : Science
Languages : en
Pages : 321
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Book Description
Plate Tectonics & Crustal Evolution, Second Edition covers the role of plate tectonics in the geologic past in light of existing geologic evidence, and examples of plate reconstructions. The book discusses the important physical and chemical properties of the crust and upper mantle in terms of models for crustal origin and evolution. The text also describes sea-floor spreading; magma associations; plate tectonics and continental drift. The phanerozoic orogenic systems and the precambrian crustal development are also tackled. The book will be invaluable to students in the earth sciences and to various specialists in the geological sciences.
Author: Soumyajit Mukherjee
Publisher: Springer
ISBN: 3319993410
Category : Science
Languages : en
Pages : 461
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Book Description
This book presents a compilation of findings, review and original works, on the tectonic evolution and structural detail of several terrains in India. It captures the tectonic diversity of the Indian terrain, including tectonics of India's coastal areas, the tectonic evolution of Gondwana and Proterozoic (Purana) basins. It also describes the research results of the Indian craton's geo-history, Tertiary Bengal basin, and also the Himalayan collisional zone. Thus the book covers the deformation history of Indian terrain involving strike slip, compressional and extensional tectonics, and ductile and brittle shear deformations.
Author: D. Vielzeuf
Publisher: Springer Science & Business Media
ISBN: 9400920555
Category : Science
Languages : en
Pages : 587
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Book Description
Proceedings of the NATO Advanced Research Workshop on Petrology and Geochemistry of Granulites, Clermont-Ferrand, France, September 5-9, 1988
Author: Mihir Deb
Publisher: Alpha Science Int'l Ltd.
ISBN: 9781842650011
Category : Business & Economics
Languages : en
Pages : 538
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Book Description
The northwestern Indian Shield, covering a major part of Rajasthan and parts of northern Gujarat, northwestern Madhya Pradesh, Haryana and Delhi, is one of the most important repositories of a variety of mineral deposit types, particularly of base metals. Their metallogeny has been a topic of both academic and economic interest for more than five decades. This volume presents in a systematic manner the essential features of all economically significant types of metallic mineral deposits in this region and considers their mettallogeny in the perspective of crystal evolution of the northwestern Indian shield. Current concepts, problems and the probable trends of future research are highlighted. Leading geoscientists with first hand knowledge of this Precambrian terrene have contributed to this volume. The book will be of interest to exploration geologists, researchers and postgraduate students concerned with Precambrian geology and metallogeny.
