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Proterozoic Orogens of India : A critical window to Gondwana - Chetty

Proterozoic Orogens of India

A critical window to Gondwana

By: Chetty

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Published: 1st September 2017
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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-a-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.Chapter 1: Orogens 1.1 Introduction 1.1.1.Definition 1.1.2 Classification 1.2. Characteristics of accretionary orogens 1.3 Important geologic features of orogens 1.3.1 Shear zones 1.3.1.1 Significance of shear zones 1.3.1.2 Types of shear zones 1.3.1.3 Brittle shear zones 1.3.1.4 Brittle - ductile shear zones 1.3.1.5 Ductile shear zones 1.3.1 Suture Zones 1.3.2 Duplex structures 1.3.3 Sheath folds 1.3.4 Gneiss domes 1.3.5 Constrictive structures 1.3.6 Melange structures 1.3.7 Ophiolites 1.3.8 UHT assemblages 1.3.9 High Pressure granulites Blueschist Metamorphism Eclogite Metamorphism 1.4 Transpression and transtension tectonics 1.5 Accretionary orogens and Plate tectonics 1.6 Proterozoic orogenic belts of India Chapter 2: The Southern Granulite Terrane 1. Introduction 2. Tectonic Divisions 2.1 Northern Granulite Block 2.2 Madurai Block 2.3 Trivendrum Block 3. Shear Zone Systems 3.1 Cauvery Shear/Suture Zone 3.1.1 General geology 3.1.2 Lithological assemblages 3.1.3 Structure 3.1.3.1 Eastern part 3.1.3.2 Western part 3.1.4 Ophiolitic assemblages 3.1.5 High Pressure rocks 3.1.6 UHT assemblages 3.1.7 Duplex structures 3.1.8 Tectonic melanges 3.1.9 Sheath fold structures 3.2 Structural cross sections 3.2.1 Salem- Mohanur 3.2.2 Bhavani -Palani 3.2.3 Flower structure 3.2.4 Regional Synthesis 3.3 Achankovil shear zone 3.3.1 General geology 3.3.2 Regional structure 3.3.3 Mesoscopic structural features 3.3.4 Structural cross section 3.3.5 Reactivation tectonics 3.3.6 Regional synthesis 3.4 Tectonic evolution Chapter 3: The Eastern Ghats Mobile Belt 2.1 Introduction 2.2 General geology 2.3 Lithological assemblages 2.4 Structure 2.5 Tectonic divisions 2.6 Shear Zone systems 2.6.1 EGMB south 2.6.2 EGMB Central 2.6.3 EGMB North 2.6.3.1 Northern Boundary shear zone 2.6.3.2 Mahanadi shear zone 2.6.3.3 Koraput-Sonapur-Rairakhol shear zone 2.6.3.4 Link shear zones 2.6.3.5 Lithostructural domains Rengali domain Angul domain Tikarapara domain Phulbani-Daspalla domain 2.6.4 Crustal cross section 2.7 Anorthosites 2.8 Alkaline rocks 2.9 Ophiolites 2.10 Terrane concept 2.11 Regional synthesis 2.12 Tectonic evolution Chapter 4: The Central Indian Tectonic Zone 4.1 Introduction 4.2 Lithological assemblages 4.3 Regional structure 4.4 Shear zone systems 4.4.1 Son-Narmada shear zone 4.4.2 Balrampur-Tattapani shear zone 4.4.3 Tan shear zone 4.4.4 Central Indian shear zone 4.5 Ophiolites 4.6 High Pressure granulites 4.7 UHT assemblages 4.7 Tectonic evolution Chapter 5: The Aravalli - Delhi Orogen 5.1 Introduction 5.2 Lithological assemblages 5.3 Regional structure 5.4 Shear zone systems 5.4.1 Great Boundary shear zone 5.4.2 Banas Shear Zone 5.4.3 Kaliguman shear zone 5.4.4. Phulad shear zone 5.5 Gneiss Domes 5.6 Ophiolites 5.7 Tectonic evolution Chapter 6: Gondwana correlations 6.1 Introduction 6.2 Gondwana supercontinent 6.3 Proterozoic orogens and the Gondwana 6.3.1 Lithologies 6.3.2 Rift structures 6.3.3 Shear zone systems

1. Orogens 2. The Southern Granulite Terrane 3. The Eastern Ghats Mobile Belt 4. The Central Indian Tectonic Zone 5. The Aravalli Fold 6. Gondwana Correlations

ISBN: 9780128044414
ISBN-10: 0128044411
Audience: Professional
Format: Paperback
Language: English
Number Of Pages: 426
Published: 1st September 2017
Publisher: Elsevier Science Publishing Co Inc
Country of Publication: US
Dimensions (cm): 23.5 x 19.0  x 3.3
Weight (kg): 0.85
Edition Number: 1