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Umfang: 1 online resource (658 pages)

Ausgabe: 1st ed.

ISBN: 9780128232231

Anmerkung: Front cover -- Halftitle -- Title -- Copyright -- Dedication -- Contents -- List of figures -- List of field photos -- List of tables -- About the author -- Foreword -- Preface -- Acknowledgment -- Abbreviations -- Section I Giga-sequences GS-I to GS-IV (MostlyPrecambrian up to the base of Vendian) -- Chapter 1 Introduction - rationale, holistic composite chronicle, cratonic framework and outline of the presentation -- 1.1 Approach and rationale -- 1.1.1 Alternation through geological time of major hot active spans and less hot to cool quiet intervals -- 1.1.2 Rationale for a new and all pervading chronostratigraphic order -- 1.2 Holistic composite chronicle -- 1.3 Parameters used for piecing together the common threads into a Mosaic -- 1.3.1 Skeletal outline of the early history of the earth and formation of the primordial crust -- 1.3.2 Early life (4550-3900 ma) -- 1.3.3 Chrono-sequential snapshot through the ∼4500 myr long earth history -- 1.4 Hierarchical differentiation of the geological record -- 1.4.1 Increasing age resolution from Archean to Cenozoic -- 1.5 India as composite framework of four main cratons -- 1.5.1 Tectono-geographic delimitation of the main cratons -- 1.5.2 The ancient most Indian geological entity as one of the four cratons -- 1.5.3 The oldest igneous rocks -- 1.5.4 Possible extension of the Aravalli - Bundelkhand craton up to Lesser Himalaya by Neoarchean -- 1.5.5 Recently interpreted extension of the Dharwar Craton in the Deccan Basaltic region -- 1.6 Quasi-tectono-stratigraphic homogeneity and contemporaneity of geodynamic framework in the erstwhile East Gondwana cratonic ensemble -- 1.6.1 Invariable relative proximity of the cratons of India, China, Australia and Antarctica in the successive global assemblies -- 1.6.2 Barter exchange of small crustal chunks in the successive compression - extension cycles. , 1.6.3 Outline of the Indian north margin during successive Precambrian giga-mega sequences -- 1.7 Organization of the presentation -- 1.7.1 Summarized tabulation of the giga to 3rd order sequences along with examples of a few major sequence timelines of the Indian geological sequences -- Chapter 2 Pre-Archean and mostly Archean record -- 2.1 Hadean and Eoarchean (∼4500-3600 ma) -- 2.2 Singhbhumian giga/mega sequence (∼4500-3600 ma) -- 2.2.1 Recently unraveled early crustal history in Singhbhum -- 2.2.2 Origin of atmosphere and hydrosphere -- 2.2.3 The oldest geochemical signatures of life -- 2.2.4 Intense meteoritic impact bombardment -- 2.2.5 Additional evidences of Hadean antiquity of the Singhbhum geological history -- 2.2.6 Similarity of the geological antiquity of Singhbhum with Australia and China -- 2.2.7 Primordial crust as a thin lid -- 2.2.8 Conceptual first mantle over-turn -- 2.2.9 Post first overturn new crust is buoyant -- 2.2.10 Formation of the first stable subcontinental lithosphere -- 2.2.11 Generation of the first stable SCLM and emergence of modern plate tectonics at ∼3600 ma -- 2.2.12 Increased frequency of overturns -- 2.2.13 Uniqueness of the ∼4500-3600 ma early crustal history -- 2.2.14 Differentiation of similar early crustal history in Singhbhum as Singhbhumian giga-sequence or GS-I -- 2.3 Presumable start of the modern plate-tectonics distinctly after the close of the Singhbhumian giga-sequence -- 2.4 Evidence of the Singhbhumian mega-sequence elsewhere in India -- 2.4.1 Northwest India -- 2.4.2 Bastar -- 2.4.3 Dharwar -- 2.5 Probable origin of hydrosphere during the Hadean -- 2.6 Mostly Archean and early Paleoproterozoic span up to ∼2350 ma -- 2.7 Characteristic rocks of the Archean -- 2.7.1 Greater than 50% crustal growth during Archean. , 2.7.2 Absence of high pressure and low temperature metamorphic assemblages in Archean -- 2.7.3 Hotter mantle and greater heat flow in Archean than any time later -- 2.7.4 Dome and basin framework of crust during Archean -- 2.8 A few parameters particularly relevant to Archean and Proterozoic -- 2.8.1 Major glaciation and/or cool intervals as important parameter for sequence differentiation -- 2.8.2 Sequence differentiation in context of widespread volcanism through Earth's geological history -- 2.8.3 Possibilities of sequence differentiation in context of the origin of life and subsequent organic evolutionary strides through the Precambrian -- 2.9 First signals of life in the geological record -- 2.9.1 Life in the Indian Archean record -- 2.9.2 Story of the single celled undifferentiated prokaryotic organisms -- 2.9.3 First stromatolites in the geological record across the globe -- 2.9.4 Probable long evolutionary stasis during Mesoarchean -- 2.9.5 Possible origin of reductive photosynthesis during Paleoarchean -- 2.9.6 Anoxygenic photosynthesis as a precursor to oxygenic photosynthesis -- 2.9.7 Progressive pulses of oxygenation during Archean -- 2.9.8 Significant phases of rise of oxygen near the start of and within the Neoproterozoic -- 2.9.9 Three major cycles interpreted during Hadean - Eoarchean anoxic earth -- 2.9.10 Primitive/rudimentary cratonic processes -- 2.9.11 Graded transition from stagnant lid to mobile lid tectonics -- 2.9.12 Evolution of eukaryotic from prokaryotic organisms -- 2.9.13 Origin of the eukaryotic organisms through either doubtful early episodic geographically and environmentally restrictive oxygenation or after proper 'GOE' favorably later -- 2.10 Episodic phases of oxygenation through time -- 2.11 Giga-sequence - GS-II (∼3600-2350 ma) -- 2.11.1 Paleogeographic framework. , 2.12 GS-II MS-II Sargurian ∼3600-2900/2850 ma mega-sequence -- 2.12.1 Important features of the Dharwar craton -- 2.12.2 Key features of the Sargurian mega-sequence -- 2.12.3 Tentative age-framework -- 2.12.4 Deep seated even mantle reaching faults in the Dharwar craton -- 2.12.5 Iron bearing rocks of possible oxygen lacking anoxic environment -- 2.12.6 Sargurian mega-sequence inclusive or exclusive of the basement Gorur and coeval primary sialic crust -- 2.12.7 Crude sequence stratigraphic organization -- 2.12.8 Evidence of events of Sargurian mega-sequence elsewhere in India -- 2.12.9 Interpreted Neoarchean - Mesoproterozoic tectonothermal history of Yangtze platform of South China somewhat different from the LH - Aravalli - Bundelkhand NIB block -- 2.12.10 Tectonothermal framework in West Australia -- 2.13 GS-II MS-III Dharwarian mega-sequence (∼2900-2850 ma - ∼2350 ma) -- 2.13.1 Two phases of volcanism in the Dharwarian mega-sequence -- 2.13.2 Main granitization event -- 2.13.3 BIFs of the Dharwarian mega-sequence -- 2.13.4 Chronologically isochronous temporal framework of the Dharwarian BIFs -- 2.13.5 Differentiation/distinction between the Sargurian and Dharwarian mega-sequences in Dharwar -- 2.13.6 Multiple shear zones affecting the Dharwar craton -- 2.13.7 Sequence stratigraphic framework -- 2.13.8 Widespread manifestation of the Dharwarian mega-sequence -- 2.13.9 Schist/greenstone belts of EDC -- 2.13.10 Principal phases of cratonization (∼3100-2900 ma and 2600-2350 ma) -- 2.13.11 Paleoproterozoic dyke swarms as black-box/stop-watch of widespread extension event -- 2.13.12 Organic remains in Sandur Schist belt black cherts -- 2.13.13 Two deformation phases -- 2.13.14 Alkaline carbonatite belt in EDC as evidence of early Neoproterozoic reactivation. , 2.13.15 Decreasing precision of the ages of evolutionary punctuation marks with increasing age -- 2.13.16 Late Neoproterozoic and Early Paleozoic metamorphic reworking in the Nellore Schist amphibolites -- 2.13.17 Metamorphism -- Chapter 3 Proterozoic excluding basal ∼2500-2350 ma Paleoproterozoic and ∼635-541 ma Vendian -- 3.1 Proterozoic span into two giga-sequences GS-III and GS-IV -- 3.1.1 Alternative of extra-long single ∼2350-635 ma giga-sequence also thought about -- 3.2 A few phenomena especially relevant to Proterozoic -- 3.2.1 Two generations of Paleoproterozoic magmatism manifested through dyke swarms in SIB cratons, and even extending to erstwhile Gondwana constituents of West Australia and East Antarctica -- 3.2.2 Long persistent loose togetherness of the East Gondwana constituents -- 3.2.3 Paleogeographic configurations during the Proterozoic GS-III and GS-IV Giga-sequences (∼3600-635 ma) -- 3.2.4 Oxidative Mn cycle as intermediate between the anoxic earth and GOE -- 3.2.5 Oxygenation during the Proterozoic -- 3.3 Acceleration in organic evolutive processes -- 3.3.1 Early/mid Paleoproterozoic advent of polyphyletic acritarchs along with GOE -- 3.3.2 Several fold more efficient metabolism and thousand time cell size increase along with reductive photosynthesis from Neoarchean to mid-Paleoproterozoic -- 3.3.3 Differentiation of eukaryotes into three major lines plants, fungi and animals -- 3.3.4 Cyanobacteria as the first reliable uncontested evidence of oxidative photosynthesis during the ∼2350-1700 ma Giga TST of GS-III -- 3.3.5 ∼1850-1550 ma evolution of simple multicellular eukaryotic organisms -- 3.4 The principal mobile belts - ADMB, SMB, and EGMB -- 3.4.1 ADMB -- 3.4.2 SMP/CITZ/CIZ/GIOFOB -- 3.4.3 EGMB. , 3.4.4 Indian Paleo-Mesoproterozoic mobile belts as evidence of similar quasi-isochronous tectono-igno-stratigraphic framework of multiple extension-closure cycles.

Weitere Ausg.: ISBN 9780128212707

Sprache: Englisch