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By Webster Mohriak, Manik Talwani

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

Atlantic Rifts and Continental Margins fills an incredible details hole within the seismic documentation of the passive margins of the Atlantic basin. New strategies have motivated contemporary advancements in conceptual types that combine geological and geophysical equipment for reading deep water areas. specialists speak about a whole spectrum of themes, together with the effect of Precambrian compressional tectonics history at the formation of continental margins, neighborhood gravity and magnetics, precise seismic interpretation, and state-of-the-art suggestions and strategies. This quantity may be of curiosity either to educational geoscientists operating in basin research and to these engaged in petroleum exploration.Content:

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Brito Neves, R. A. Fuck, R. Porto, A. B. Cunha,Estudopreliminarde integra½fio do Pr6-Cambriano Tectonics,Jour. ,75, 14, 2625-2647, 1973. : Geologia,petrologiae geoquimica. , 1998. Duarte,B. H. Figueiredo,M. CamposNeto andM. Heilbron,Geochemistry of the GranuliteFaciesOrthogneisses of Juiz de Fora Complex, Central Segmentof Ribeira Belt, SoutheastBrazil, RevistaBrasileirade Geoci•ncias,27, 1, 6782,1997. , Relat6rio de Atividades,in Relat6rio Anual do Diretot, ano 1954, DNPM Div. Geol. 7989, 1955.

Canadian Society ofPetroleum Geologists, Memoir12,393-411,1987. Szatmari,P. and W. U. Mohriak,Platemodelof post-breakup tectono-magmatic activityin SEBrazilandtheadjacent Atlantic, in V Simp6sio Nacionalde EstudosTect6nicos, Gramado, 213-214, 1995. J. ),Petroleum BasinsofSouthAmerica,AAPGMemoir,62, 5-52, 1985. ET AL. 31 Teixeira, W. H. Figueiredo,An outline of Early Proterozoic crustal evolution in the Sio FranciscoCraton, Brazil: a review, Precambrian Research, 53, 1-22, 1991. , Geology of WesternGondwana(2000-500 Ma), A.

This accretion collisional structures in form of fault and shear zones, whereasthe lower crustin warm areashasbeenrejuvenated during the collapseprocesses,showing a dense seismic "lamellae"structurewhich is not foundin any otherlevel of the lithosphere[Meissner,1996]. Most listricfaultsfrom the upper crust seem to flatten with depth and turn into the horizontal direction in the lower crust. It is evidentfrom theseobservationsthat the boundarybetweenthe crustand the mantle,the "Moho", really is one of the mostprominent boundaryof our planetearth(anotherone is the core-mantle boundary).

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