Propiedades petroestructurales de rocas madres de petróleo.: Pizarras bituminosas del Cretácico superior de la cuenca vasco-cantábrica.

• Autores: Rafaela Marfil Pérez, Carmen Dorronsoro Urrutia, Albert Permanyer Bastardas, R. Aguiló
• Localización: Geogaceta, ISSN 0213-683X, Nº. 13, 1992, págs. 76-81
• Idioma: español
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• Resumen

  • Black shales from Carai (Vizcaya) have been studied from the following points of view: mineralogy, geochemistry (pyrolysis rock-eval), porosimetry measurements and clay fabric. Data obtained suggest that: a) The presen ce of organic matter exerts a secondary influence in con trolling porosity and clay fabric, b) A significant percentage of carbonate minerals inhibit clay particle orientation, c) There is little or no connection between porosity and/or fabric and clay mineral composition, except perphaps in sediments with appreciable mixed-layers l-S content, d) There seems to be no relationship between porosity and/or fabric and total clay content, e) Compaction processes are not the main control on the structural properties of these rocks