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Atlantic Rifts and Continental Margins by Webster Mohriak, Manik Talwani

By Webster Mohriak, Manik Talwani

Published via the yank Geophysical Union as a part of the Geophysical Monograph Series.

Atlantic Rifts and Continental Margins fills a tremendous info hole within the seismic documentation of the passive margins of the Atlantic basin. New innovations have motivated fresh advancements in conceptual versions that combine geological and geophysical tools for analyzing deep water areas. specialists speak about an entire spectrum of subject matters, together with the effect of Precambrian compressional tectonics historical past at the formation of continental margins, neighborhood gravity and magnetics, targeted seismic interpretation, and state-of-the-art techniques and strategies. This quantity might be of curiosity either to educational geoscientists operating in basin research and to these engaged in petroleum exploration.Content:

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Rochasintrusivase metassedimentos granuliticosdo ComplexoParaibado Sul na partesetentrionalda Faixa Ribeira in Aras do III SimpOsio de Geologia do Sudeste, SBG/RJ,Rio de Janeiro,pp. , MetamorfismogranuHticodo ComplexoParaiba do Sul na por•io setentrionalda Faixa Ribeira, a leste do Crfitondo Sio Franciscoin Anais do II SimpOsiode Geologia do Crc•tondo S. Francisco e Faixas Marginais, SBG/BA, Salvador, 266-268, 1993b. , W. Teixeira and M. Heilbron, The PanAfrican/Brasiliano Arc-related Magmatism at the Costeiro Domain of the Ribeira belt, SoutheasternBrazil, in Abstracts of the International Conference on Precambrian and Craton Tectonics/14thInternational Conferenceon BasementTectonics, Ouro Preto, MG, pp.

3) crossing the CDF. In the whole area a mild extension without a heat It has been mentioned that northern Denmark and the Scandinaviancountriesbelong to the old craton Baltica, which is Archaeanin the very NE, gettingyoungertoward the SW. In the Late Proterozoicprovincenorthof Bornholm, an accretionof various terraneshas taken place. ]. There is a huge increasein number, amplitude,and thicknessof reflectivityin the whole crust, the reflectionsdiverging,thickeningthe crusttowardtheNE. Terrane boundaries are seen by especially strong and continuousreflections,which probablyrepresentespecially strong shear zones, as suggestedby Potter [1989] and Beaumontet al.

B. Geology,26, 6, 519-522, 1998. G. Valenca and A. Ribeiro, Multistagegeneration of granite in Rio de Janeiro,Brazil, Anais da Academia Brasileira de Ci•ncias, 54, 3, 563-574, 1982. D. and J. LaBreque, The Mesozoic SouthAtlantic Ocean and evolution of its continental margins, Journal of GeophysicalResearch,84, B 11, 5973-6002, 1979. , Late Proterozoic- Early Paleozoicof southAmerica: a collisionalhistory,Episodes,11, 168-174, 1988. E. W. M. M. A. ' Congresso GeologicoArgentino, 9, BuenosAires, Associaci6nGeologica Argentina, 2, 84-106, 1984.

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