The Geology of Southern Guyana, South America

The Geology of Southern Guyana, South America PDF Author: Jevan P. Berrangé
Publisher: Stationery Office Books (TSO)
ISBN:
Category : History
Languages : en
Pages : 124

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The Geology of Southern Guyana, South America

The Geology of Southern Guyana, South America PDF Author: Jevan P. Berrangé
Publisher: Stationery Office Books (TSO)
ISBN:
Category : History
Languages : en
Pages : 124

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Geology and Mineral Deposits of the Venezuelan Guayana Shield

Geology and Mineral Deposits of the Venezuelan Guayana Shield PDF Author: Gary B. Sidder
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 328

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The Geology of the Guiana Shield

The Geology of the Guiana Shield PDF Author: Allan K. Gibbs
Publisher: Oxford University Press, USA
ISBN:
Category : Literary Criticism
Languages : en
Pages : 266

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Book Description
The Guiana Shield is an area of special importance, especially to those concerned with Precambrian geology because it provides a perspective on a part of Earth history not well represented elsewhere. For economic geologists, its mineral resource potential is just beginning to be understood. This overview of current knowledge will greatly help geologists already working in the area, draw attention to the need for mineral exploration research, and encourage the inclusion of the Shield in future Precambrian studies.

Geology and Tectonics of Northwestern South America

Geology and Tectonics of Northwestern South America PDF Author: Fabio Cediel
Publisher: Springer
ISBN: 3319761323
Category : Science
Languages : en
Pages : 1010

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Book Description
This book provides a comprehensive overview of the geological evolution of the Northern Andes and contiguous shield areas, with a focus upon Colombia. Updated geological interpretations are supported by modern lithogeochemical, seismic, gravity and magnetic data and radiogenic isotope and radiometric age determinations. The composite data permits a detailed interpretation of the tectono-magmatic history of the Northern Andean Block, including the Andes of Colombia, northern Ecuador, western Venezuela and eastern Panamá. Tectonic reconstructions based upon characterization of more than thirty litho-tectonic and morpho-structural units, terrane assemblages and tectonic realms, and their bounding suture and fault systems, highlight the intimate and complementary Mesozoic-Cenozoic history of the Northern Andean Block and the Pacific and Caribbean Plates. The complex nature of Northern Andean assembly contrasts with ‘‘classical’’ Central Andean ‘‘Cordilleran-type’’ orogenic models. Differences render the application of typical Cordilleran-type models inappropriate for the Colombian Andes. The importance of underlying Proterozoic through mid-Mesozoic elements, in the development of Meso-Cenozoic Northern Andean orogeny-phase tectonic configurations is analyzed in the light of spatial-temporal studies and reconstructions related to basin formation, sedimentation, deformation, uplift mechanisms, structural style and magmatic evolution. The pre-Andean architecture of north western South America has played a pre-determinative role in the development of the Northern Andean orogenic system. 16 contributions analyze key stratigraphic, structural, metamorphic, magmatic and tectonic questions, and provide solutions as far as the most recent published field-based studies permit. The volume provides geological interpretations and tectonic models which contrast with repetitive theoretical proposals frequently found in the available literature.

U.S. Geological Survey Bulletin

U.S. Geological Survey Bulletin PDF Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 26

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Quaternary Geology and Geomorphology of South America

Quaternary Geology and Geomorphology of South America PDF Author: Chalmers Moyes Clapperton
Publisher: Elsevier Science Publishing Company
ISBN:
Category : Science
Languages : en
Pages : 804

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Book Description
This monograph reviews the nature of Quaternary environmental changes over the largest continent in the Southern Hemisphere. Moreover, since South America makes a transect across most climatic belts of an entire hemisphere, it provides a unique opportunity to examine the impact of changing Quaternary climates on a variety of environments. It also forms the basis for judging the synchrony or non-synchrony of Quaternary climatic changes between hemispheres and this has important implications for climatic modelling.As South America has a dynamic tectonic regime along its western margin, 3 chapters discuss the geomorphological impact of Quaternary tectonics and volcanism. The following 6 chapters integrate evidence for Quaternary changes in the great alluvial basins of the Continent Orinoco, Amazon, Paranaacute;) and in the contiguous highland massifs (Guyana, Brazil, Patagonia). As parts of the Andes have been high enough to support glaciers since the late Miocene, 5 chapters review the nature and consequences of Quaternary glacier fluctuations. The following 4 chapters select major process-form systems that impacted the continent during the Quaternary, including geocryogenic activity, palaeolake development, palaeo-gravel formations and coastal changes. Three chapters provide the first major review of Quaternary vegetation changes in South America (primarily the Andes) deduced from palaeoecological data. The final chapter weaves most of the environmental threads together in an overall synthesis of the Quaternary of South America.The book is lavishly illustrated with photographs and line diagrams. As it provides a compendium of data and analyses about Quaternary changes for a whole continent, this book should appeal to a wide range of environmental disciplines.

Amazonia: Landscape and Species Evolution

Amazonia: Landscape and Species Evolution PDF Author: Carina Hoorn
Publisher: John Wiley & Sons
ISBN: 1444360256
Category : Science
Languages : en
Pages : 869

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Book Description
The book focuses on geological history as the critical factor in determining the present biodiversity and landscapes of Amazonia. The different driving mechanisms for landscape evolution are explored by reviewing the history of the Amazonian Craton, the associated sedimentary basins, and the role of mountain uplift and climate change. This book provdes an insight into the Meso- and Cenozoic record of Amazonia that was characterized by fluvial and long-lived lake systems and a highly diverse flora and fauna. This fauna includes giants such as the ca. 12 m long caiman Purussaurus, but also a varied fish fauna and fragile molluscs, whilst fossil pollen and spores form relics of ancestral swamps and rainforests. Finally, a review the molecular datasets of the modern Amazonian rainforest and aquatic ecosystem, discussing the possible relations between the origin of Amazonian species diversity and the palaeogeographic, palaeoclimatic and palaeoenvironmental evolution of northern South America. The multidisciplinary approach in evaluating the history of Amazonia has resulted in a comprehensive volume that provides novel insights into the evolution of this region.

Open-file Report

Open-file Report PDF Author:
Publisher:
ISBN:
Category : Geological surveys
Languages : en
Pages : 504

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New Publications of the Geological Survey

New Publications of the Geological Survey PDF Author: Geological Survey (U.S.)
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 746

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Mineral Resource Potential of the NB-20-4 Quadrangle, Eastern Guayana Shield, Bolívar State, Venezuela

Mineral Resource Potential of the NB-20-4 Quadrangle, Eastern Guayana Shield, Bolívar State, Venezuela PDF Author: Jeffrey C. Wynn
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 26

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