The Origin Evolution And Demise Of Continental Lithospheric Mantle

The book reviews the current physical theory of Earth's global evolution, its origin, structure and composition, the process of Earth's core formation, Earth's energy, and the nature of its tectonomagnetic activity. The book also deals with the origin of the Moon and its influence on our planet's evolution. Based on the integral positions of this theory, the book analyzes the issues of the origin of the hydrosphere and atmosphere, and the conception and evolution of life on Earth. The monograph also reviews the adiabatic theory of the greenhouse effect developed by the authors, and the effects of nitrogen-consuminging bacteria and of periodic changes in the precession angle on its climate. In particular, these effects cause the onset and periodicity of ice ages and a significant climate warming during the periods of supercontinent appearance (like Pangaea in the Mid-Mesozoic). Challenges current thinking about climate change on the basis of sound geological data Helps the reader make informed decisions about Earth-process related problems Challenges the reader to critically analyze both theory and data

Glorious panoramic photography by the author, a specialist in interpretive landscape, reveals the physical legacy of the Earth's distant past. This exceptional book celebrates the inevitability of global change and highlights our need as human beings to recognize and adjust to it. Color and b&w illustrations.

A multidisciplinary update on continental plate tectonics and plate boundary discontinuities Understanding the origin and evolution of the continental crust continues to challenge Earth scientists. Lithospheric Discontinuities offers a multidisciplinary review of fine scale layering within the continental lithosphere to aid the interpretation of geologic layers. Once Earth scientists can accurately decipher the history, internal dynamics, and evolution of the continental lithosphere, we will have a clearer understanding of how the crust formed, how plate tectonics began, and how our continents became habitable. Volume highlights: Theories and observations of the current state of tectonic boundaries and discontinuities Contributions on field observations, laboratory experiments, and geodynamic predictions from leading experts in the field Mantle fabrics in response to various mantle deformation processes Insights on fluid distribution using geophysical observations, and thermal and viscosity constraints from dynamic modeling Discontinuities associated with lithosphere and lithosphere-asthenosphere boundary An integrated study of the evolving physical and chemical processes associated with lithosphere asthenosphere interaction Written for academic and researchgeoscientists, particularly in the field of tectonophysics, geophysicists, geodynamics, seismology, structural geology, environmental geology, and geoengineering, Lithospheric Discontinuities is a valuable resource that sheds light on the origin and evolution of plate interaction processes.

Origin and Evolution of the Deep Continental Crust provides the recent research in the field of Deep Continental Crust in India. Several new data sets on the interesting aspects of petrology and geochemistry of the Indian lithosphere and glimpses of the regional geology and geodynamics of parts of the Indian Shield have been provided. It includes articles on sapphirine bearing granulites from Karur, amphibolites from Hutti-Maski Gold mine, granites from Varshanadu and mataconglomerate-quartzite from Malvan which provide vital clues to the Pre Cambrian evolution of South India. The articles from Bastar Craton are related to felsic magmatism -- Dongargargh granites from Gadchiroli and the Bijli rhyolite while the Paleoproterozic high-MgO dykes represents the basic magmatism from this craton. Studies related to Kimberlite magmatism from the Wajrakarur and Manipur kimberlite, The Jungel valley alkaline lamprophyre, the dyke-flow co-relation and fluid inclusions from the Deccan Traps, and xenolith bearing host alkaline magmatism from Kutch provide important clues to the evolution of the sub-continental lithospheric mantle (SCLM). The possibility of the Lonar impact glass as potential natural analogue for nuclear waste galss is also discussed. The paleomagnetic data of some litho-tectonic units from the Indus Suture Zone, Ladakh also provide insight into the paleo-latitude reconstruction of India. The book thus serves as a useful and up-to-date reference for students, academicians and researchers.

Presenting a coherent synthesis of lithosphere studies, this book covers a range of geophysical methods (seismic reflection, refraction, and receiver function methods; elastic and anelastic seismic tomography; electromagnetic and magnetotelluric methods; thermal, gravity and rheological models), complemented by petrologic and laboratory data on rock properties. It also provides a critical discussion of the uncertainties, assumptions, and resolution issues that are inherent in the different methods and models of the lithosphere. Multidisciplinary in scope, global in geographical extent, and covering a wide variety of tectonics settings across 3.5 billion years of Earth history, this book presents a comprehensive overview of lithospheric structure and evolution. It is a core reference for researchers and advanced students in geophysics, geodynamics, tectonics, petrology, and geochemistry, and for petroleum and mining industry professionals.

Archaean Geochemistry 1972 - 1984 The realisation that the continental crust contains well-preserved relics which date as far back as 4/5 of the Earth's age has given a great impetus to the study of early Precambrian terrains. As late as the mid-sixties the Archaean still constituted the 'terra-in cognita' of earth science. High metamorphic grades, poor out crop, and not least a widely assumed obliteration of early crustal records by convective recycling and thermal reworking had com bined to discourage research in this field. Many excellent local studies existed, notably around gold mining centres, but remained unrelated to a broader regional and theoretical understanding. This situation has changed as the consequence of two inter-related factors: (1) advances in isotopic methods and their application to Precambrian rocks, and (2) the recognition that some of the oldest terrains have retained a wealth of primary igneous and sedi mentary textures and even geochemical characteristics.

The eruption of deep-seated xenoliths in basaltic, alnoitic, kimberlitic, etc volcanoes provides the geologist with an important direct means of examining the fragments of the earth's mantle and lower crust.

This substantially revised edition includes recently published information relating to plate tectonics and continental origin. A large number of new figures have been added, and new sections included on meteorites, seismic tomography, mantle convection, accretionary terranes, mantle sources and evolution, continental growth, secular changes in Earth history, also a new chapter on exogenic Earth systems. In addition the following topics have been substantially revised: lunar origin, global gravity, origin of the core, metamorphism, plate boundaries, hotspots, tectonic settings, and magma associations. Among the new features the Tectonic Map of the World has also been updated.

Developments in Geotectonics, 4: The Upper Mantle focuses on the upper mantle and its influence on the development of the earth's crust, including history of the moon and other planets and volcanology. The selection first offers information on the origin of the earth, including ideas on the formation process of the terrestrial planets, condensation of dust particles, nature of the earth's core, thermal history of the earth, and fractionation of iron in the terrestrial planets. The text then ponders on the beginning of continental evolution, as well as the oldest rocks of the earth's crust, thermal history of the moon, and early history of the other planets. The text elaborates on magmatic activity as the major process in the chemical evolution of the earth's crust and mantle; trends in the evolution of continents; progress and problems in volcanology; and pressure and temperature conditions and tectonic significance of regional and ocean-floor metamorphism. The manuscript also takes a look at the state of mantle minerals, melting temperatures in the earth's mantle, and geomagnetic induction studies and the electrical state of the upper mantle. The publication is a dependable reference for readers interested in the study of the upper mantle.