Описание: This book focuses on the metallogeny and main tectonicevents of the North China Craton from early Precambrian to Phanerozoic. Itcovers the Archean crustal growth, Paleoproterozoicrifting-subduction-collision processes, Great Oxidation Event,Meso-Neoproterozoic multiple rifting, Phanerozoic reworking of the North ChinaCraton, as well as metallogeny related to above different processes. The NorthChina Craton is one of the oldest cratons in the world. It has experienced acomplex geological evolution since the early Precambrian, and carries importantrecords of secular changes in tectonics and metallogeny. It provides asystematic review and new results on the growth and evolution of the NorthChina Craton and metallogeny. It will be of broad interest to the earthscientists working in the fields ofeconomic geology, geochemistry, and tectonics of the North China Craton andeastern Asian.
Описание: This book is based on studies during 1964-2007 of Archaean terrains in Australia and to a lesser extent in South Africa and India, as well as on visits to Archaean terrains in Canada, the US and China, as well as petrological and geochemical studies of igneous and sedimentary rock suites from a range of terrains.
Автор: A. Kr?ner; G. N. Hanson; A. M. Goodwin Название: Archaean Geochemistry ISBN: 3642700039 ISBN-13(EAN): 9783642700033 Издательство: Springer Рейтинг: Цена: 15372.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Final Report of the IGCP Project No. 92 (Archean Geo- chemistry)
Introduction.- Geological background.- Neoarchean basement rock assemblage, crust-mantle interactions and crustal evolution of Western Liaoning Province.- Paleo- to Mesoproterozoic magmatic rock assemblage and crust-mantle geodynamic processes.- Precambrian crustal evolution, lithospheric mantle evolution and crust-mantle geodynamics of Western Liaoning-Northwest Hebei Provinces.- Concluding remarks.
Автор: Umberto G. Cordani; Monica L. R. Heilbron; Fernand Название: S?o Francisco Craton, Eastern Brazil ISBN: 3319017144 ISBN-13(EAN): 9783319017143 Издательство: Springer Рейтинг: Цена: 27950.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: The region of the S?o Francisco river valley in eastern Brazil encompasses two main components of the geologic framework of the South American continent: the S?o 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 S?o 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 S?o Francisco craton together with its fringing orogenic belts can be viewed as a ‘continent within a continent’ or a ‘continent in miniature’.
Описание: This thesis presents geological, petrological, geochemical, and zircon U–Pb–Lu–Hf isotopic field data for representative Precambrian lithologies in the Western Liaoning-Northeastern Hebei Provinces along the northern margin of the North China Craton (NCC). It describes late Neoarchean (2.64–2.48 Ga) supracrustal metavolcanic rocks and granitoid gneisses; late Paleoproterozoic (1.72–1.68 Ga) Jianping alkaline plutons and Pinggu alkaline volcanic rocks; and newly discovered ~1.23 Ga mafic dykes. The nature of magma sources and genesis of each magmatic episode are investigated, and the Precambrian (~2.6–1.2 Ga) lithospheric mantle evolution and crust-mantle interaction processes are established for the first time –aspects that provide important constraints in our understanding of the Precambrian crustal evolution and geodynamic processes in the region studied.
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