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Titre: Petroleum source rocks of the Tarfaya Basin and adjacent areas, Morocco
Auteur(s): Perssen, Ferdinand
Littke, Ralf
Heim, Sabine
Kluth, Oliver
Schober, Jürgen
Sindern, Sven
Jabour, Haddou
Sachse, Victoria F.
Boutib, Lahcen
Issue Date: 2011
Editeur: Elsevier Ltd
Référence bibliographique: Organic geochemistry, v. 42
Résumé: This work characterizes the source rock potential of the Tarfaya Basin and enabled us to reconstruct its geochemical history. Outcrop samples covering different stratigraphic intervals, plus the northwestern part of the Zag/Tindouf Basin (Bas Draa area), were analyzed for total organic carbon (Câ‚’áµ£g) and total inorganic carbon contents and total sulfur content. Rock–Eval analysis and vitrinite reflectance measurements were performed on 56 samples chosen on the basis Câ‚’áµ£g content. A set of 45 samples were extracted and non-aromatic hydrocarbons were analyzed by way of gas chromatography-flame ionization detection (GC-FID) and GC-mass spectrometry (GC-MS). Non-isothermal open system pyrolysis at different heating rates was applied to obtain kinetic parameters for modelling petroleum generation from four different source rocks. High quality petroleum source rocks with high Câ‚’áµ£g content and hydrogen index (HI) values were found for samples of Eocene, Coniacian, Turonian and Cenomanian age. Most samples were carbonate rich and organic/sulfur values were high to moderate. Various maturity parameters indicated immature or possibly early mature organic matter. Based on organic geochemical and petrological data, the organic matter is of marine/aquatic origin (Cenomanian) or a mixture of aquatic and terrigenous material (Eocene). The Early Cretaceous interval did not contain high quality source rocks, but indications of petroleum impregnation were found.
License: http://andzoa.ma/fr
URI: http://dx.doi.org/10.1016/j.orggeochem.2010.12.004
http://localhost:8080/dspace/handle/0/802
ISSN: 0146-6380
DOI: 10.1016/j.orggeochem.2010.12.004
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