Download or read book The Early Precambrian Aldan Massif and Its Surroundings written by F. P. Mitrofanov and published by . This book was released on 1985 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Early Precambrian of Russia written by Glebovitsky and published by CRC Press. This book was released on 1997-12-23 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 1997. Routledge is an imprint of Taylor & Francis, an informa company.
Download or read book Precambrian of the Southern Margin of the Siberian Craton the Lesser BAM Zone written by and published by . This book was released on 1988 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geological Evolution of the Earth During the Precambrian written by L.J. Salop and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress in Precambrian geology has been exceptionally great, indeed quite striking for geologists of the older generation; only some 30-40 years ago the Precambrian appeared as an uncertain and even mystic prelude to geologic evolution. Even the very name - Precambrian - means some indi visible unit in the early history of the Earth, the beginning of which is poorly known. At the same time it was obvious that the Precambrian formations are of extremely varied and complex composition and poor knowledge and lack of reliable methods of division and correlation were to blame for the lack of significant progress in studies of this early evolutionary stage of the planet. Certainly, even at the very start of Precambrian studies, the results obtained were quite promising, lifting as they did the mysterious veil over the regional Precambrian; but they presented no general realistic picture of this early stage in the Earth's evolution at that time. Recently, this situation has completely changed, due to new methods of study of the older forma tions, and due also to the refinement of some well-known methods, in particular of division, dating, and correlation of "silent" metamorphic strata. Application of different isotope methods of dating was most impor tant in providing objective rock age and thereby the age of geologic events recorded in these rocks. Thus it became possible to reconstruct the oldest geologic period of our planet.
Download or read book Precambrian Geology of the USSR written by D.V. Rundqvist and published by Elsevier. This book was released on 1993-02-03 with total page 537 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume draws together and generalises new geological, geochronological, petrological and geophysical material for the two fundamental continental geostructures within the USSR - ancient cratons and Phanerozoic fold belts. It provides a complete Precambrian history for each tectonic province or "geoblock", with emphasis on the early Precambrian as opposed to the late. The characteristics of lithological-structural complexes and their correlations are presented in detail. Analysis of the sedimentary, magmatic and metamorphic processes is provided, paying special attention to the sequence of their evolution and isotopic data. This work will be of interest to geologists concerned with the problems of structure and evolution of the Precambrian lithology.
Download or read book Early Precambrian Basic Magmatism written by R.P. Hall and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: Basic magmatic rocks make up approximately three-quarters of the crust ofthe present day Earth. Because we can observe and study the volcanic products of present day tectonic regimes comprehensively, we can shed light on ancient tectono-magmatic provinces, and thereby deduce the petrogenesis and evolution of the oldest basic rocks. This is the primary objective of this book. The book was conceived in order to provide a comprehensive review of the basic rocks produced during the first half of the Precambrian, i.e. the Archaean and early Proterozoic, to about 1.8 Ga years ago. Two major questions are addressed. First, what basic magmas were generated during the early Precambrian: were these magmas globally uniform, and to what extent were prevailing tectonic controls and compo sitions analogous to those of the present day? Clearly, this can be answered only by bringing together fundamental information about all relevant basic magmatic events. Second, is there any systematic temporal variation in the nature of basic suites, and what implications might such variations have on our interpretations of early Earth history? Are there important differences between early Archaean, late Archaean, Proterozoic and modern basic magmatic suites? The book uses two approaches to address these questions. Early chapters examine the fundamental characteristics of these basic rocks, whilst later chapters assess regional distribution and development by providing an overview of each major early Precambrian craton.
Download or read book Geological Evolution of the Earth During the Precambrian written by Lazarʹ Iosifovich Salop and published by Springer. This book was released on 1983 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress in Precambrian geology has been exceptionally great, indeed quite striking for geologists of the older generation; only some 30-40 years ago the Precambrian appeared as an uncertain and even mystic prelude to geologic evolution. Even the very name - Precambrian - means some indi visible unit in the early history of the Earth, the beginning of which is poorly known. At the same time it was obvious that the Precambrian formations are of extremely varied and complex composition and poor knowledge and lack of reliable methods of division and correlation were to blame for the lack of significant progress in studies of this early evolutionary stage of the planet. Certainly, even at the very start of Precambrian studies, the results obtained were quite promising, lifting as they did the mysterious veil over the regional Precambrian; but they presented no general realistic picture of this early stage in the Earth's evolution at that time. Recently, this situation has completely changed, due to new methods of study of the older forma tions, and due also to the refinement of some well-known methods, in particular of division, dating, and correlation of "silent" metamorphic strata. Application of different isotope methods of dating was most impor tant in providing objective rock age and thereby the age of geologic events recorded in these rocks. Thus it became possible to reconstruct the oldest geologic period of our planet.
Download or read book Geology of the Pacific Ocean written by and published by . This book was released on 2000 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Precambrian Ore Deposits of the East European and Siberian Cratons written by C. Gillen and published by Elsevier. This book was released on 1997-12-08 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Precambrian Ore Deposits of the East European and Siberian Cratons" is a sequel to "Precambrian Geology of the USSR" published in 1993 (English edition), in which the main emphasis was on the stratigraphy, magmatism and metamorphism of Precambrian assemblages in both ancient cratons (East European and Siberian) as well as in Phanerozoic fold belts and mobile regions. Mineral deposits associated with Precambrian structures were mentioned only in passing, since space restrictions in the earlier work did not allow even a brief outline of major deposits. The present book fills that gap.
Download or read book Precambrian of the Northern Hemisphere written by Lazar' Iosifovich Salop and published by . This book was released on 1977 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geophysical Abstracts written by and published by . This book was released on 1971-07 with total page 984 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geophysical Abstracts written by Geological Survey (U.S.) and published by . This book was released on 1970 with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Principles of Precambrian Geology written by Alan M. Goodwin and published by Elsevier. This book was released on 1996-06-18 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt: Principles of Precambrian Geologyis an update to the 1991 book, Precambrian Geology: The Dynamic Evolution of the Continental Crust, by the same author. The new edition covers the same topics in a more concise and accessible format and is replete with explanatory figures, tables, and illustrations. The book serves as a modern comprehensive statement on the Earth's Precambrian crust, covering the main aspects of distribution, lithiostratigraphy, age, and petrogenesis of Precambrian rocks by continent within the context of the Earth's evolving continental crust. Principles of Precambrian Geology provides a suitable framework for assessing various Earth dynamic and biospheric hypotheses, including the modern plate tectonic paradigm and the Gaian hypothesis. Despite the concise format, the new edition provides extensive updated references to support the information presented. It is designed to serve the needs of student, teacher, explorationist and general student of the continental crust. Updated to provide more concise accessible information Extensive illustrations, tabulations, and maps Provides a framework for assessing recent hypothesis on Earth dynamics Covers main aspects of distribution, lithostratigraphy, age, and protogenesis of Precambrian rocks
Download or read book Mineral Deposits at the Beginning of the 21st Century written by A. Piestrzynski and published by CRC Press. This book was released on 2022-05-02 with total page 1188 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Joint 6th Biennial SGA-SEG Meeting was held in Krakow in August 2001. This volume contains 274 extended abstracts, grouped thematically under 18 session titles covering topics such as lead-zinc deposits; metamorphism affecting mineral deposits; and the environmental aspects of mining.
Download or read book Archean Crustal Evolution written by K.C. Condie and published by Elsevier. This book was released on 1994-11-11 with total page 543 pages. Available in PDF, EPUB and Kindle. Book excerpt: The integration of Tectonics/Geochemistry, up-to-date reviews by leading scientists as well as a broad topical coverage of the Archean, are some of the features of this particular volume. As geochronology has progressed in the last 20 years, the Archean has continued to attract interest. Advancements in the understanding of Archean crustal and mantle evolution have progressed rapidly since the first International Archean Symposium in Western Australia (1970). The landmark for the Archean was the NATO Advanced Study Institute at Leicester (1975). At this meeting the Archean truly "came of age". Investigators from many different disciplines focused their expertise on the early history of the earth. For the first time, the nature of the atmosphere, oceans, and life during the Archean was an important part of an Archean symposium. During the most recent Archean Symposium in Perth in 1990, there was a shift in interest from field and trace element data to the new rapidly evolving high-precision U/Pb geochronology of Archean rocks and to detailed structural studies of both low and high grade Archean terrains. The terrane concept so widely applied to the Phanerozoic was proposed for the Archean Yilgarn Province in Western Australia and is now widely accepted for the Archean (as evident by the articles in this book). Plate tectonics is now widely accepted as the principal process that controls the history of continents and oceans. There are, though, well substantiated differences between Archean and post-Archean rocks that indicate that Archean tectonic regimes must have differed in some respects from modern ones. The question of how and to what degree did Archean plate tectonics differ from modern plate tectonics is treated in many of the chapters of this book. Altogether, the editor has presented a selection of articles that provide a fascinating insight into the latest observations in this field.
Download or read book Precambrian of the Northern Hemisphere written by Lazarʹ Iosifovich Salop and published by . This book was released on 1977 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proposes a generalized subdivision of the Precambrian based on comparative analysis.
Download or read book Ecosystem Dynamics in a Polar Desert written by and published by American Geophysical Union. This book was released on 1998 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents information from the primary abiotic forces defining the system, and from the present hydrology, biogeochemistry and physics of major sites of organic carbon production of the McMurdo Dry Valleys. Additionally, research on the physical, chemical, and biological properties of the dry valley soils is included. The role of environmental management in long-term ecological studies is also addressed. The accompanying CDROM provides details and scale to visualize the McMurdo Dry Valleys from an ecosystem perspective.
