This is the Home Page of a paper published in volume 9 of Marine and Petroleum Geology, in August, 1992.
If you click on the interlinks (underlined text and bots), you can navigate and you will find the text and the majority of theis paper.
As illustrated on this tentative geological interpretation of a seismic line of the conventional Angola offshore, this offshore (Kwanza basin) correspond to the superposition oof different sedimentary basin : (1) Paleozoic fold belt or basement (2) Upper Jurassic-Lower Cretaceous rift type basins and (3) Meso-Cenozoic divergent continental margin. Within the divergent margin a salt layer alloe geoscientists to subdivide the stratigraphic column into two major intervals : (i) Infrasalt sediments and (ii) Suprasalt sediments, which are separated by a salt induced tectonic disharmony (underlined by a continuous red line). In the suprasalt sediments the combination of halokinesis and gravity gliddings create salt welds and rafts (second order rafts on this particular example), which are characteristics not only of this offshore, but the majority of the South Atlantic salt margins.
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Raft Tectonics in the Kwanza Basin
by
Bernard Duval, Carlos Cramez and M.P.A. Jackson
Send E-mail to arloscramez@gmail.com or to carlos.cramez@bluewin.ch with questions or comments about this paper.
Copyright © 1992 CCramez
Last modification: August, 2014