Ophiolites in Earth History


Book Description

The 32 papers in this volume examine the mode and nature of igneous, metamorphic, tectonic, sedimentological, and biological processes associated with the evolution of oceanic crust in different tectonic settings in Earth history as revealed in various ophiolites and ophiolite belts around the world, and the geodynamic significance of these ophiolites in the evolution of different orogenic systems. Divided into six thematic sections, the book presents a wealth of new data and syntheses from mainly Phanerozoic ophiolites around the world.




Ophiolites and Oceanic Crust


Book Description

The proceedings from the September 1998 conference in Marshall, California contain 39 papers on the following topics: ophiolites, ocean crust, and global tectonics; oceanic lower crust and upper mantle; structure and physical properties of upper oceanic crust; hydrothermal processes; Pacific Rim ophiolites; and, Ophiolites from Iapetus, Rheic-Pleionic, Neotethyan, and Indian Oceans. Contributors include scientists with backgrounds in structural geology, tectonics, geophysics, petrology, and geochemistry. Numerous black and white illustrations (and one in color) are included. Annotation copyrighted by Book News Inc., Portland, OR




Plate Tectonics, Ophiolites, and Societal Significance of Geology


Book Description

"This volume honors Eldridge Moores, one of the most accomplished geologists of his generation. The volume starts with a summary of Moores' achievements, along with personal dedications and memories from people who knew him. Leading off the volume's 12 chapters of original scientific contributions is Moores' last published paper that presents an example of the Historical Contingency concept, which suggested that earlier subduction history may result in supra-subduction zone geochemical signatures for some magmas formed in non-subduction environments. Other chapters highlight the societal significance of geology, the petrogenesis of ophiolites, subduction zone processes, orogenic belt evolution, and other topics, covering the globe and intersecting with Moores' interests and influences"--







A Petrographic Atlas of Ophiolite


Book Description

The book is a thoughtful discussion with scientists studying convergent plate boundaries such as the well-known, active India-Eurasia collision zone. It provides a comprehensive collection of petrographic images of ophiolitic rocks exhumed from oceanic lithosphere and mantle at the India-Asia plate boundary. Ophiolite is exposed in the northwestern Himalayas, eastern Indian plate margin and Andaman-Nicobar Islands. At the eastern margin, it occurs in a narrow strip comprising mantle peridotite tectonite, cummulate peridotite-gabbro-plagiogranite-anorthosite, mafic dyke, volcanics and oceanic sediments. Low temperature/high pressure rocks including blueschists and eclogites were extensively studied recently. Ophiolite derived sediments and podiform chromites will also be discussed to provide complete details. Supplemental maps, geological sections, field sketches and photographs will explain the structure, stratigraphy, ore mineralization, and metamorphic history.




Links Between Geological Processes, Microbial Activities & Evolution of Life


Book Description

Microbial systems in extreme environments and in the deep biosphere may be analogous to potential life on other planetary bodies and hence may be used to investigate the possibilities of extraterrestrial life. This book examines the mode and nature of links between geological processes and microbial activities and their significance for the origin and evolution of life on the Earth and possibly on other planets. This is a truly interdisciplinary science with societal relevance.




The Geology of Iran: Tectonic, Magmatism and Metamorphism


Book Description

This book describes the geological setting of Iran throughout geological history, referring to paleogeography and general geodynamics. Also, all structural units, faults, tectonic phases and orogeny occurred in the geology of Iran have been evaluated. Magmatic and metamorphic rocks along with ophiolitic complexes have extensive outcrops in Iran, and these rocks with Precambrian age constitute its basement. Study and identification of such rocks not only throws light on the geodynamic issues of Iran but also helps in recognition of the mode of formation and evolution of the sedimentary basins located within various structural divisions of the country. Moreover, the majority of metallic and non-metallic mineral deposits are associated either directly or indirectly with magmatic, and at time metamorphic, rocks. In the Magmatism and Metamorphism parts, it is tried to thoroughly consider the various aspects of the igneous rocks, whether intrusive, extrusive or young volcanoes, from the point of view of petrography, geochemistry and geodynamics. In addition, the major intrusive bodies of Iran have been presented along with their petrologic and chronologic specifications in tables, mentioning the bibliographic resources.