Download or read book Communications of the Geological Survey of South West Africa Namibia written by and published by . This book was released on 1995 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Communications of the Geological Survey of Namibia written by and published by . This book was released on 2004 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Communications of the Geological Survey of South West Africa Namibia written by and published by . This book was released on 1990 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Communications written by and published by . This book was released on 1985 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Alkaline Rocks and Carbonatites of the World written by Alan Robert Woolley and published by Geological Society of London. This book was released on 1987 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text describes and provides ready access to the literature for all known occurrences of alkaline igneous rocks and carbonatites of Africa. Over 1000 occurrences are described from 40 countries. The descriptions include geographical co-ordinates and information of structure, general geology, rock types, petrography, mineralogy, ages, economic aspects and principal references. There are 348 geological and distribution maps and a locality index.
Download or read book GAC Special Paper written by Geological Association of Canada and published by . This book was released on 1956 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Formation and Evolution of Africa written by Douwe J. J. van Hinsbergen and published by Geological Society of London. This book was released on 2011 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: The African continent preserves a long geological record that covers almost 75% of Earth's history. The Pan-African orogeny (c. 600-500 Ma) brought together old continental kernels (West Africa, Congo, Kalahari and Tanzania) to form Gondwana and subsequently the supercontinent Pangaea by the late Palaeozoic. The break-up of Pangaea since the Jurassic and Cretaceous, primarily through opening of the Central Atlantic, Indian, and South Atlantic oceans, in combination with the complicated subduction history to the north, gradually shaped the African continent. This volume contains 18 contributions that discuss the geology of Africa from the Archaean to the present day.
Download or read book The Geological Record of Neoproterozoic Glaciations written by Emmanuelle Arnaud and published by Geological Society of London. This book was released on 2011 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, interest in Neoproterozoic glaciations has grown as their pivotal role in Earth system evolution has become increasingly clear. One of the main goals of the IGCP Project number 512 was to produce a synthesis of newly available information on Neoproterozoic successions worldwide. This Memoir consists of a series of overview chapters followed by site-specific chapters. The overviews cover key topics including the history of research on Neoproterozoic glaciations, identification of glacial deposits, chemostratigraphic techniques and datasets, palaeomagnetism, biostratigraphy, geochronology and climate modelling. The site specific chapters include reviews of the history of research on these rocks and up-to-date syntheses of the structural framework, tectonic setting, palaeomagnetic & geochronological constraints, physical, biological, and chemical stratigraphy, and descriptions of the glaciogenic and associated strata, including economic deposits.
Download or read book 4 D Framework of Continental Crust written by Robert D. Hatcher and published by Geological Society of America. This book was released on 2007 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book contains landmark papers on the processes of formation of continental crust from its beginnings in the Archean to modern processes, as well as discussions of several ancient and modern orogenic belts. The book is international in scope, with contributions from geoscientists dealing with crustal processes on five continents, and articles from more than 50 non-U.S. authors and co-authors."--Publisher's website.
Download or read book The Lower Garib Orange River written by Luregn Lenggenhager and published by transcript Verlag. This book was released on 2023-06-30 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Lower !Garib, or Orange River, flows through the historical Namaqualand and since 1990 has formed the international border between Namibia and South Africa. The contributors to this volume focus on this hardly discussed stretch of the Orange River to understand the region's social history, geography, and economy. This book brings together scholars from Namibia, South Africa, and overseas, as well as the knowledge and analysis from people living in the region. In concise chapters and short portraits, they discuss the region's past and present from a variety of perspectives.
Download or read book Supercontinent Cycles Through Earth History written by Z.X. Li and published by Geological Society of London. This book was released on 2016-05-20 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: The supercontinent-cycle hypothesis attributes planetary-scale episodic tectonic events to an intrinsic self-organizing mode of mantle convection, governed by the buoyancy of continental lithosphere that resists subduction during the closure of old ocean basins, and the consequent reorganization of mantle convection cells leading to the opening of new ocean basins. Characteristic timescales of the cycle are typically 500 to 700 million years. Proposed spatial patterns of cyclicity range from hemispheric (introversion) to antipodal (extroversion), to precisely between those end members (orthoversion). Advances in our understanding can arise from theoretical or numerical modelling, primary data acquisition relevant to continental reconstructions, and spatiotemporal correlations between plate kinematics, geodynamic events and palaeoenvironmental history. The palaeogeographic record of supercontinental tectonics on Earth is still under development. The contributions in this Special Publication provide snapshots in time of these investigations and indicate that Earth’s palaeogeographic record incorporates elements of all three end-member spatial patterns.
Download or read book Glaciated Margins written by D.P. Le Heron and published by Geological Society of London. This book was released on 2019-04-08 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the sedimentary and geophysical archive of glaciated margins is a complex task that requires integration and analysis of disparate sedimentological and geophysical data. Their analysis is vital for understanding the dynamics of past ice sheets and how they interact with their neighbouring marine basins, on timescales that cannot be captured by observations of the cryosphere today. As resources, sediments deposited on the inner margins of glaciated shelves also exhibit resource potential where more sand-dominated systems occur, acting as reservoirs for both hydrocarbons and water. This book surveys the full gamut of glaciated margins, from deep time (Neoproterozoic, Ordovician and Carboniferous–Permian) to modern high-latitude margins in Canada and Antarctica. This collection of papers is the first attempt to deliberately do this, allowing not only the similarities and differences between modern and ancient glaciated margins to be explored, but also the wide spectrum of their mechanisms of investigation to be probed. Together, these papers offer a high-resolution, spatially and temporally diverse blueprint of the depositional processes, ice sheet dynamics, and basin architectures of the world’s former glaciated margins; a vital resource in advancing understanding of our present and future marine-terminating ice sheet margins.
Download or read book Geological Survey Circular written by Geological Survey (U.S.) and published by . This book was released on 1975 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Neoproterozoic Cambrian Tectonics Global Change and Evolution written by Claudio Gaucher and published by Elsevier. This book was released on 2009-10-20 with total page 483 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book deals with the record of important Neoproterozoic to Early Palaeozoic events in southwestern Gondwana, that heralded the Cambrian explosion and the dawn of modern ecosystems. It contains a detailed account of the Neoproterozoic to Cambrian geological record in a poorly-known part of the world, which is at the same time key to understand fundamental processes at the Proterozoic-Cambrian transition. The emphasis is placed on litho-, bio-, chemostratigraphy and magmatism. The palaeoclimatic, tectonic, evolutionary radiation and extinction events and associated mineralizations will be identified and discussed. A synthesis of all data is provided at the end of the book, integrating the data from all cratons and fold belts in southwestern Gondwana. The events will be individualized, their impact discussed and correlations between different successions both within and outside Gondwana proposed.The book is organized in three sections. Section one is an introduction to the neoproterozoic and Cambrian seen as a time of upheavals, extremes and innovations. Section two comprises nineteen chapters dealing with the neoproterozoic-Cambrian events in southwestern Gondwana. Section three will provide a synthesis on every major topic, and a critical assessment of the global implications of the presented data. - The book deals with the record of important Neoproterozoic to Early Palaeozoic events in southwestern Gondwana, that heralded the Cambrian explosion and the dawn of modern ecosystems - It contains a detailed account of the Neoproterozoic to Cambrian geological record in a poorly-known part of the world, which is at the same time key to understand fundamental processes at the Proterozoic-Cambrian transition - The emphasis is placed on litho-, bio-, chemostratigraphy and magmatism
Download or read book New Studies on Former and Recent Landscape Changes in Africa written by Juergen Runge and published by CRC Press. This book was released on 2013-11-15 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 32 (2013) of the internationally recognized and acclaimed yearbook series ‘Palaeoecology of Africa’ publishes 9 new interdisciplinary scientific papers on former and recent landscape evolution and on past environments of the African continent (e.g. climate change, vegetation dynamics and growing impact of humans on ecosystems). These papers expand horizons and interconnections to various types and methodologies of research on environmental dynamics from the Pliocene up to the present: review articles and regional case studies cover Nigeria, Cameroon, selected areas of the Congo basin, Kenya, Malawi, Namibia and South Africa. This volume also gives space to researchers from Africa to present their findings to a wider international audience. Today, by growing awareness of the worldwide impact of Global Change, it has become obvious that aside of the northern and southern hemisphere Polar region also the environmental setting in Africa was subject to considerable changes over time. Natural shifts in climate at least since the Pliocene have caused repeated and strong modification in the area dynamics of ecosystems located in lower latitudes. By a variety of so-called ‘proxies’ – researched and applied by the different authors from numerous disciplines – an attempt is made to reconstruct the evolution of landscapes over space and time. Besides such spatio-temporal oscillations in forested and savanna areas of Africa this volume of ‘Palaeoecology of Africa’ also focuses on possible relationships between environmental change and human impact, also on the perception of this phenomenon of recent ‘climate changes’ by different stakeholders. This book will be of interest to all concerned with low latitudes ecosystem changes and their respective interpretation in the framework of natural climate and vegetation change evidenced by a variety of methods that allow us to read and learn from ‘proxy data’ archives. Archaeologists, Palynologists, Palaeobotanist, Geographers, Geologists and Geomorphologists will find this edition equally useful for their work.
Download or read book Mineral Deposits and Earth Evolution written by Geological Society of London and published by Geological Society of London. This book was released on 2005 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mineral deposits are not only primary sources of wealth generation, but also act as windows through which to view the evolution and interrelationships of the Earth system. Deposits formed throughout the last 3.8 billion years of the Earth's history preserve key evidence with which to test fundamental questions about the evolution of the Earth. These include: the nature of early magmatic and tectonic processes, supercontinent reconstructions, the state of the atmosphere and hydrosphere with time, and the emergence and development of life. The interlinking processes that form mineral deposits have always sat at the heart of the Earth system and the potential for using deposits as tools to understand that evolving system over geological time is increasingly recognized. This volume contains research aimed both at understanding the origins of mineral deposits and at using mineral deposits as tools to explore different long-term Earth processes.
Download or read book Proterozoic East Gondwana written by Masaru Yoshida and published by Geological Society of London. This book was released on 2003 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume focuses on Late Mesoproterozoic to early Cambrian events related to Gondwana assembly and break up. The nineteen papers provide a comprehensive review including advanced knowledge and new data from all critical areas of East Gondwana. The recent knowledge of the evolution of East Gondwana, which was regarded as an integral part of the Mesoproterozoic supercontinent Rodinia, is the major theme of the volume, which is reinforced by highlighting this radical and new understanding of the evolution of this region.
