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GEOLOGIC STRUCTURE AND HALOKINESIS ON THE CONTINENTAL MARGIN OF ANGOLA

1986; Taylor & Francis; Volume: 28; Issue: 4 Linguagem: Inglês

10.1080/00206818609466284

1938-2839

V. D. Dibner, N. Ye. Mitin, I. I. Rozhdestvenskaya, M. M. Seryakov, L. A. Ustinova,

Geological formations and processes

The paper offers a brief overview of the structure in an area of considerable petroleum potential as interpreted from a viewpoint somewhat different from the standard Western model of the opening of the Atlantic. Seismoacoustic profiling data and geomorphological evidence obtained by the Sevmorgeologiya, as well as studies made by one of the authors in collaboration with the Sonangol national corporation and published data on the geology of Angola and deep-water drilling allow the authors to construct a seismogeological profile crossing all the subzones in the Angola continental margin and part of the eastern bathyabyssal region. A major feature of the sediment cover at the Angola continental margin is the presence of very extensive and thick salt-bearing beds, which are responsible for various forms of salt tectonics (halokinesis). Three types of section occur in the sedimentary cover. The paper describes all three types in detail. 13 references.