Petrologic and Geochronologic Evolution of the Oldest Segments of the São Francisco Craton, Brazil PDF Download

Author: M. C. H. Figueiredo
Publisher:
ISBN:
Category : Cratons
Languages : en
Pages : 162

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Author: Monica Heilbron
Publisher: Springer
ISBN: 3319017152
Category : Science
Languages : en
Pages : 326

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Book Description
The region of the São Francisco river valley in eastern Brazil encompasses two main components of the geologic framework of the South American continent: the São Francisco craton and its marginal orogenic belts. Cratons, as the oldest, differentiated and relatively stable pieces of the continental lithosphere, preserve a substantial part of the Earth's memory. Orogenic belts, on the other hand, record collisional processes that occurred during a limited time span. Because of their topographic relief, mountain belts developed along craton margins provide however access to rock successions not exposed in the low lands of the adjacent cratons. The combination of geologic information obtained in cratonic domains and their marginal orogenic belts thus form the basis for deciphering substantial periods of Earth’s history. Corresponding to the most intensively studied portion of the Precambrian nucleus of the South American plate, the São Francisco craton and its margins host a rock record that spans from the Paleoarchean to the Cenozoic. Precambrian sedimentary successions that witness ancient Earth processes - many of them of global significance - are especially well preserved and exposed in this region. With all these attributes the São Francisco craton together with its fringing orogenic belts can be viewed as a ‘continent within a continent’ or a ‘continent in miniature’.

Author: Umberto Giuseppe Cordani
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 870

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Author:
Publisher:
ISBN:
Category : Petrology
Languages : en
Pages : 228

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Author: International Geological Correlation Programme
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 140

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Author: International Geological Correlation Programme
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 132

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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 256

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Author:
Publisher:
ISBN:
Category : Geology, Stratigraphic
Languages : en
Pages : 488

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Author: K.C. Condie
Publisher: Elsevier
ISBN: 0080869106
Category : Science
Languages : en
Pages : 543

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Book Description
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.

Author: D. Vielzeuf
Publisher: Springer Science & Business Media
ISBN: 9400920555
Category : Science
Languages : en
Pages : 587

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Book Description
Proceedings of the NATO Advanced Research Workshop on Petrology and Geochemistry of Granulites, Clermont-Ferrand, France, September 5-9, 1988