India and Antarctica During the Precambrian

Contents: Preface. Introduction. Gondwana tectonics: 1. Rodinia and Gondwana: a record of supercontinent configuration change/Raphael Unrug, Wright State University, USA. 2. A Pan-African zone linking east and west Gondwana/John J.W. Rogers, Jonathan S. Miller and Alina S. Clements, University of North Carolina, USA. 3. Assembly of east Gondwanaland during the mesoproterozoic and its rejuvenation during the Pan-African period/M. Yoshida, Osaka City University, Japan. 4. Correlations between the Albany, Fraser and Darling mobile belts of Western Australia and Mirnyy to Windmill Islands in the East Antarctic shield: implications for proterozoic Gondwanaland reconstructions/Lyal B. Harris, The University of Western Australia, Australia. Metamorphism: 1. High-grade metamorphism and deformation in the Prydz Bay region, East Antarctica: terranes, events and regional correlations/S.L. Harley, University of Edinburgh and I.C.W. Fitzsimons, University of London, Britain. 2. Pressure-temperature evolutionary history of the eastern ghats granulite province: recent advances and some thoughts/Somnath Dasgupta, Jadavpur University, India. 3. Evaluation of pressure-temperature of metamorphism and tectonothermal history of granulites from the Visakhapatnam area in the eastern ghats, India/V.I. Fonarev and A.N. Konilov, Institute of Experimental Mineralogy of the Russian Academy of Sciences, Russia and A.T. Rao, Andhra University, India. 4. P-T-D history of granulites from Anakapalle, eastern ghats--evidence for polyphase (?) granulite metamorphism/Sanjoy Sanyal, Jadavpur University, India and M. Fukuoka, Hiroshima University, Japan. Fluid processes: 1. The role and nature of fluids in the continental lower crust/J.L.R. Touret, Vrije Universiteit, The Netherlands. 2. Stable isotopic characterization of metamorphic fluid processes in the Kerala khondalite belt, south India/Hideki Wada, Shizuoka University, Japan and M. Santosh, Centre for Earth Science Studies, India. Structure: 1. Proposed structural tectonic influences on the amphibolite-granulite facies transition of southern India/M.B. Katz, University of New South Wales, Australia. 2. Terrain interference in the precambrian of Prydz Bay, East Antarctica/P.H.G.M. Dirks, University of Utrecht, The Netherlands. 3. A correlation of proterozoic shear zones between eastern ghats, India and Enderby Land, East Antarctica, based on LANDSAT imagery/T.R.K. Chetty, National Geophysical Research Institute, India. 4. The displacement direction of the Arena Gneiss in Central Sri Lanka: implications for structural correlations in the East Gondwanaland/Yasutaka Tani and Masaru Yoshida, Osaka City University, Japan. Geochemistry: 1. Petrology, geochemistry and evolution of the charnockite suite of the Petermann ranges, East Antarctica/A. Joshi and N.C. Pant, Geological Survey of India, India. 2. Geochemistry of metapelites from archaean high grade terrain of Southern Karnataka, South India/B. Mahabaleswar, N. Shadakshara Swamy and M. Jayananda, Bangalore University, India. 3. Geochemistry of charnockites from the eastern ghats granulite belt - evidence for possible linkage between India and Antarctica/A.T. Rao, Andhra University, India; V. Divakara Rao, National Geophysical Research Institute, India; M. Yoshida, Osaka City University, Japan and M. Arima, Yokohama National University, Japan. Geophysics: 1. India\'s contributions to geophysical investigations in Antarctica/H.K. Gupta and S.K. Verma, National Geophysical Research Institute, India. Magmatism and mineralization: 1. The petrogenesis of tabular granites of the western, H.U. Sverdrupfjella, Dronning Maud Land, Antarctica: the influence of accessory phases/G.H. Grantham, University of Pretoria, South Africa. 2. Late proterozoic continental growth: implications from geochemistry of acid magmatic events of West Indian craton, Rajasthan/S.K. Bhushan, Geological Survey of India, India. 3. The Pan-African gemstone province of East Gondwana/Radhi D. Menon and M. Santosh, Centre for Earth Science Studies, India. Geochronology: 1. Geochronologic and isotopic constraints on granulite formation in the Kodaikanal area, southern India/M. Jayananda, Bangalore University, India; A.S. Janardhan and P. Sivasubramanian, University of Mysore, India and J.J. Peucat, Universite de Rennes I, France. 2. New isotope constraints on the crustal evolution of south India and Pan-African granulite metamorphism/J.M. Bartlett, N.B.W. Harris and C.J. Hawkesworth, The Open University, Britain and M. Santosh, Centre for Earth Science Studies, India. 3. Sm-Nd and Rb-Sr mineral isochron ages of Madras charnockite, and an evaluation of garnet geochronometry in granulites/C. Unnikrishnan-Warrier and M. Yoshida, Osaka City University, Japan, H. Kagami, Okayama University, Japan and M. Santosh, Centre for Earth Science Studies, India.

From the preface: The advent of plate tectonic theory has revolutionised our thinking about earth and its processes through geological time. It has helped development of a new synthesis and focussed attention on the gigantic forces operating on the earth, moving continents over long distances, assembling them into supercontinents, breaking them again and allowing the broken fragments to drift away, creating oceans and elevating mountain ranges - and in all these ways effecting dramatic changes in the distribution of air, water and life. The earth is no longer viewed as a static mass but as a dynamic planet throbbing with incessant activity. New techniques have come to aid earth scientists in gaining a better appreciation of the evidences of great continental movement. It is time that we in India take more active interest in the study of these larger issues instead of being preoccupied most of the time with matters of purely local interest. The present volume which we are placing in the hands of our readers, aims at providing a closer undertanding of the interrelationship between India and its neighbouring continents.

"There is unifying force operating in the world of today. Study of the geology and the past history of the earth is sure to promote better understanding and bring the people of the widely separated continents closer.

"In this compilation, earth scientists from India, Japan and Australia have come forward with new evidences to establish relationship between these continents. Understanding of the different stages in the evolution of the continents and their margins is crucial. Such an understanding is likely to lead to discoveries of new metal occurrences and hydrocarbon resources. These studies will also be of invaluable help in evaluating the risk of natural hazards and in the preservation of environment."