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Lithotectonic And Metallogenic Synthesis Of The New Quebec Orogen Labrador Trough
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Book Synopsis Lithotectonic and Metallogenic Synthesis of the New Québec Orogen (Labrador Trough) by : Thomas Clark
Download or read book Lithotectonic and Metallogenic Synthesis of the New Québec Orogen (Labrador Trough) written by Thomas Clark and published by . This book was released on 2006 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Clarke, Thomas Publisher :Charlesbourg, Québec : Ministère des ressources naturelles, de la faune et des parcs ISBN 13 : Total Pages : pages Book Rating :4.:/5 (588 download)
Book Synopsis Lithotectonic and Metallogenic Synthesis of the New Quebec Orogen (Labrador Trough) [electronic Resource] by : Clarke, Thomas
Download or read book Lithotectonic and Metallogenic Synthesis of the New Quebec Orogen (Labrador Trough) [electronic Resource] written by Clarke, Thomas and published by Charlesbourg, Québec : Ministère des ressources naturelles, de la faune et des parcs. This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Petrology, Geochemistry and Evolution of the Labrador Trough Basaltic Suite, Labrador and New Quebec by : Jonathan Findlay
Download or read book Petrology, Geochemistry and Evolution of the Labrador Trough Basaltic Suite, Labrador and New Quebec written by Jonathan Findlay and published by . This book was released on 1996 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The central Labrador Trough is an Early Proterozoic volcano-sedimentary succession which preserves the remnants of a major magmatic province, the Labrador Trough Basaltic Suite (LTBS). The Menihek gabbros, which are distinctive members of the LTBS, form a sill-sediment complex with turbidites of the Menihek Formation. The Menihek gabbros often exhibit spectacular plagioclase glomeroporphyritic textures. Tholeiitic basalts of the LTBS (Le Fer and upper Menihek/Willbob basalts) exhibit many textural and geochemical similarities, despite a difference of $\sim$260 Ma in the ages of the two principal suites. The alkaline rocks of the LTBS (Nimish, lower Menihek and lower Murdoch basalts) exhibit strong compositional diversity, and it is probable that variations in mantle source composition and/or melting depths, crustal assimilation, fractional crystallization and post-crystallization processes influenced the geochemistries of these suites. The Nimish and lower Menihek basalts exhibit extended trace element patterns which indicate that their parental melts were derived primarily from a relatively undepleted mantle reservoir, but with variable contributions from a depleted source. The stratigraphic and geochemical characteristics of the LTBS suggest that magmatism accompanied crustal extension and formation of pull-apart basins on the thinned margin of the Superior craton. Initial cycle 1 sedimentation ($>$2169 Ma) was fluviatile and accompanied by localized alkaline volcanism, but subsequent subsidience and marine transgression led to deposition of shallow to deep water sediments, culminating with the Le Fer turbidites. Magmatic activity and sedimentation continued until at least 2142 Ma, at which point crustal extension and basin subsidence ceased, sedimentation was interrupted, and in places pre-existing strata were eroded. Crustal attenuation and basin subsidence again led to a transgressive marine sequence, culminating with the Menihek turbidites. Alkaline volcanism of the Nimish and lower Menihek formations accompanied early cycle 2 sedimentation, while turbidite deposition was accompanied by tholeiitic volcanism in the axial regions of the basin (Doublet terrane) and by emplacement of numerous gabbro sills in flanking regions (Howse zone). The Superior craton is likely to have formed the basement to the Labrador Trough succession throughout most of its evolution, but the eruption of late high-Mg basalts in the Doublet terrane, coupled with the emplacement of high-Mg magmas as sills, may record the late rupture of the continental crust. The continental crust thus acted as a density barrier to primitive partial melts until late in the evolutionary history of the Labrador Trough. The transition from alkaline to tholeiitic magmatism in each volcano-sedimentary cycle is thought to reflect progressive increases in the degree of decompressive partial melting in the upwelling, heterogeneous asthenospheric mantle during crustal attenuation. (Abstract shortened by UMI.).
Book Synopsis Dyke Swarms - Time Markers of Crustal Evolution by : E. Hanski
Download or read book Dyke Swarms - Time Markers of Crustal Evolution written by E. Hanski and published by CRC Press. This book was released on 2006-09-28 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dyke swarms are remnants of large igneous provinces, and are pointers of continental break-up events, as well as indicators for ancient continental reconstructions. These global geodynamic aspects are of crucial significance in tectonics, and with recent developments in high-precision age, dating it has become possible to enter these short-lived ma
Book Synopsis Structure and Tectonics of the Indian Continental Crust and Its Adjoining Region by : Harish C Tewari
Download or read book Structure and Tectonics of the Indian Continental Crust and Its Adjoining Region written by Harish C Tewari and published by Elsevier. This book was released on 2018-02-07 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structure and Tectonics of the Indian Continental Crust and Its Adjoining Region: Deep Seismic Studies, Second Edition, collates essential data from seismic studies of Earth’s crust across India, offering an essential understanding of the tectonic development of the Indian subcontinent. Seismic studies have been carried out in various parts of India since 1972, recording crust-related seismic data for determination of velocity-depth configuration and determination of structural patterns. The book examines the details of these studies, including their synthesis and global applications. The book presents both background and applications in one cohesive volume for researchers and students of geophysics and geology. Presents all the information and metadata of the Indian continental crust and its neighbouring regions in a cohesive way Provides basic knowledge of the Indian subcontinent to support the discussion of seismic studies related to crustal structure Includes all new chapter covering global applications and synthesis of the findings and observations
Book Synopsis Earth Accretionary Systems in Space and Time by : Peter Anthony Cawood
Download or read book Earth Accretionary Systems in Space and Time written by Peter Anthony Cawood and published by Geological Society of London. This book was released on 2009 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accretionary orogens form at convergent plate boundaries and include the supra-subduction zone forearc, magmatic arc and backarc components. They can be broken into retreating and advancing types, based on their kinematic framework and resulting geological character.Accretionary systems have been active throughout Earth history, extending back until at least 3.2 Ga, and provide an important constraint on the initiation of horizontal motion of lithospheric plates on Earth. Accretionary orogens have been responsible for major growth of the continental lithosphere, through the addition of juvenile magmatic products, but are also major sites of consumption and reworking of continental crust through time.The aim of this volume is to provide a better understanding of accretionary processes and their role in the formation and evolution of the continental crust. Fourteen papers deal with general aspects of accretion and metamorphism and discuss examples of accretionary orogens and crustal growth through Earth history, from the Archaean to the Cenozoic.
Book Synopsis Bibliography and Index of Geology by :
Download or read book Bibliography and Index of Geology written by and published by . This book was released on 1988 with total page 1060 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Geodynamics of the Indian Plate by : Neal Gupta
Download or read book Geodynamics of the Indian Plate written by Neal Gupta and published by Springer Nature. This book was released on 2020-02-28 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides insights on new geological, tectonic, and climatic developments in India through a time progression from the Archean to the Anthropocene that are captured via authoritative entries from experts in earth sciences. This volume aims to bring graduate students and researchers up to date on the geodynamic evolution of the Indian Plate; concepts that have so far resulted in a rather uneven treatment of the subject at different institutions. The book is divided into 4 sections and includes perspectives such as the formation and evolution of the Indian crust in comparison to its neighbors such as Antarctica, Africa and Australia; the evolution of Precambrian cratons and sedimentary basins of India; and a summary account of early life reported in the Indian stratigraphic record. Readers will also discover the key recent research into the neotectonics, tectonic geomorphology, and paleoseismology of the Himalayan Front. Researchers and students in geology, earth sciences, sedimentology, paleobiology and geography will find this book appealing.
Book Synopsis Economic Geology by : Jeffrey W. Hedenquist
Download or read book Economic Geology written by Jeffrey W. Hedenquist and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Metal Deposits in Relation to Plate Tectonics by : Frederick J. Sawkins
Download or read book Metal Deposits in Relation to Plate Tectonics written by Frederick J. Sawkins and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 677 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book metal deposits, in particular those of non-ferrous and precious metals, are classified and analyzed in terms of their plate tectonic settings. This approach allows a meaningful treatment of metal deposits of different types and provides significant insights into both their genesis and formative environments. The updated 2nd edition incorporates the most significant advances in economic geology of the last 5 years. Particular attention is paid to the geological settings and generative models of gold deposits of all kinds.
Book Synopsis Geology of Southwest Gondwana by : Siegfried Siegesmund
Download or read book Geology of Southwest Gondwana written by Siegfried Siegesmund and published by Springer. This book was released on 2018-02-02 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the geological evolution of Southwest (SW) Gondwana and presents state-of-the-art insights into its evolution. It addresses the diachronic assembly of continental fragments derived from the break-up of the Rodinia supercontinent later amalgamated to build SW Gondwana during the Neoproterozoic–Cambrian transition, which on a global scale includes parts of present-day South America, Africa and Madagascar. The book presents 24 state-of-the-art reviews including the most crucial controversies. Most experienced scientists about the geology of SW Gondwana from Europe, Africa, South America and Australia present contributions on key areas addressing the interactions between the main cratons and fold belts on both sides of the South Atlantic Ocean. Chapters related to the geology of the major Archean- Paleoproterozoic cratons and Neoproterozoic Brasiliano/Pan-African fold belts enable readers to gain an in-depth understanding of the tectonometamorphic and magmatic evolution of SW Gondwana. The book covers a wide range of issues including metallogenetic, sedimentary, paleobiological and paleoclimatic processes and allows a deep insight into this key period of the Earth’s evolution.
Book Synopsis Archean Rare-Metal Pegmatites in Zimbabwe and Western Australia by : Thomas Dittrich
Download or read book Archean Rare-Metal Pegmatites in Zimbabwe and Western Australia written by Thomas Dittrich and published by Springer. This book was released on 2019-02-13 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lithium-cesium-tantalum (LCT) pegmatites are important resources for rare metals. For Cs, only the LCT pegmatites with the zeolite group mineral pollucite at Bikita (Zimbabwe Craton) and Tanco (Superior Province Craton) are of commercial importance. Common characteristics of world-class LCT pegmatite deposits include their Meso- to Neoarchean age and geological setting within greenstone belt lithologies on Archean Cratons. This study presents the first coherent and comparative scientific investigation of five major LCT pegmatite systems from the Yilgarn, Pilbara and Zimbabwe Craton. For the evaluation of their Cs potential and of the genetic concepts of pollucite formation, the pegmatites from Wodgina, Londonderry, Mount Deans and Cattlin Creek were compared to the Bikita pollucite mineralization. The integration of the new data (e.g., geochronological and radiogenic isotope data) into the complex geological framework: 1) enhances our knowledge of the formation of LCT pegmatite systems, and 2) will contribute to the further exploration of additional world-class LCT pegmatite deposits, which 3) may host massive pollucite mineralisations.
Book Synopsis Archean Base and Precious Metal Deposits, Southern Abitibi Greenstone Belt, Canada by : Thomas Monecke
Download or read book Archean Base and Precious Metal Deposits, Southern Abitibi Greenstone Belt, Canada written by Thomas Monecke and published by . This book was released on 2017 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Abitibi greenstone belt of eastern Canada represents the world's largest Neoarchean terrane of supracrustal rocks. Straddling the border between the provinces of Ontario and Quebec, the belt covers an area that is approximately 700 km from southeast to northwest and 350 km from north to south. The belt is comprised of several major east-trending successions of folded volcanic and sedimentary rocks, with intervening intrusions. The supracrustal rocks of the Abitibi greenstone belt are uniquely well preserved and have mostly been overprinted only at a low metamorphic grade, allowing the study of primary geological relationships.
Book Synopsis Early Palaeozoic Peri-Gondwana Terranes by : Michael G. Bassett
Download or read book Early Palaeozoic Peri-Gondwana Terranes written by Michael G. Bassett and published by Geological Society of America. This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explores the tectonic, palaeogeographical and palaeobiogeographical evolution of the elements that made up the peri-Gondwanan collage.
Book Synopsis Phanerozoic Ironstones by : Timothy Peter Young
Download or read book Phanerozoic Ironstones written by Timothy Peter Young and published by Geological Society Publishing House. This book was released on 1989 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis East Greenland Caledonides by : A. K. Higgins
Download or read book East Greenland Caledonides written by A. K. Higgins and published by . This book was released on 2004 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Current Research - Geological Survey of Canada by : Geological Survey of Canada
Download or read book Current Research - Geological Survey of Canada written by Geological Survey of Canada and published by . This book was released on 1978 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: