New potential hydrocarbon source-rocks in the Lower Eocene Metlaoui Formation (Central-Northern Tunisia, Northern Africa)
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| Natura: | Artículo científico |
| Lingua: | en |
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Universitat de Barcelona
2007
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| _version_ | 1876462314630152192 |
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| author | A. Arfaoui |
| author_facet | A. Arfaoui |
| contents | New potential hydrocarbon source-rocks in the Lower Eocene Metlaoui Formation (Central-Northern Tunisia, Northern Africa) A. Arfaoui M. Montacer Ciencias de la Tierra TOC Sub Tmax Alkanes Tunisia Significant quantities of organic matter accumulated and were preserved in central-northern Tunisia during theYpresian (Early Eocene). The organic geochemical characterization of the organic-rich facies of the YpresianMetlaoui Formation (Ousselat and Es-Sfeïa sections) shows their significant potential as source rocks andincreases interest in the Central-Northern Tunisia oil play. The TOC content in these rocks ranges from 0.09 to3.71% suggesting their petroleum potential, whereas their T max fluctuates from 429 to 439°C. These values andthe predominance of the hetero compounds (NSO; 2-95%) point to low organic matter maturation. The diversematurity levels reported for these organic-rich rocks never reached the conventional oil window peak stage andresulted from their different locations within the basin. The HI values and the high saturate concentrations(1-91%) compared to aromatics (1-33%), as well as the predominance of short-chain n-alkanes centered atn-C18 and n-C20 are indicative of unequivocal type-II kerogen. The fluctuation of the pristane/phytane ratio(0.97-2.53) records changes of the basin redox conditions, which mainly evolved around the sub-oxic range 2007 artículo científico 1695-6133 https://www.redalyc.org/articulo.oa?id=50550303 en http://www.redalyc.org/revista.oa?id=505 Geologica Acta: an international earth science journal application/pdf Universitat de Barcelona Geologica Acta: an international earth science journal (España) Num.3 Vol.5 |
| format | Artículo científico |
| id | redalyc_50550303 |
| institution | Redalyc |
| language | en |
| publishDate | 2007 |
| publisher | Universitat de Barcelona |
| spellingShingle | New potential hydrocarbon source-rocks in the Lower Eocene Metlaoui Formation (Central-Northern Tunisia, Northern Africa) A. Arfaoui Ciencias de la Tierra TOC Sub Tmax Alkanes Tunisia New potential hydrocarbon source-rocks in the Lower Eocene Metlaoui Formation (Central-Northern Tunisia, Northern Africa) A. Arfaoui M. Montacer Ciencias de la Tierra TOC Sub Tmax Alkanes Tunisia Significant quantities of organic matter accumulated and were preserved in central-northern Tunisia during theYpresian (Early Eocene). The organic geochemical characterization of the organic-rich facies of the YpresianMetlaoui Formation (Ousselat and Es-Sfeïa sections) shows their significant potential as source rocks andincreases interest in the Central-Northern Tunisia oil play. The TOC content in these rocks ranges from 0.09 to3.71% suggesting their petroleum potential, whereas their T max fluctuates from 429 to 439°C. These values andthe predominance of the hetero compounds (NSO; 2-95%) point to low organic matter maturation. The diversematurity levels reported for these organic-rich rocks never reached the conventional oil window peak stage andresulted from their different locations within the basin. The HI values and the high saturate concentrations(1-91%) compared to aromatics (1-33%), as well as the predominance of short-chain n-alkanes centered atn-C18 and n-C20 are indicative of unequivocal type-II kerogen. The fluctuation of the pristane/phytane ratio(0.97-2.53) records changes of the basin redox conditions, which mainly evolved around the sub-oxic range 2007 artículo científico 1695-6133 https://www.redalyc.org/articulo.oa?id=50550303 en http://www.redalyc.org/revista.oa?id=505 Geologica Acta: an international earth science journal application/pdf Universitat de Barcelona Geologica Acta: an international earth science journal (España) Num.3 Vol.5 |
| title | New potential hydrocarbon source-rocks in the Lower Eocene Metlaoui Formation (Central-Northern Tunisia, Northern Africa) |
| topic | Ciencias de la Tierra TOC Sub Tmax Alkanes Tunisia |
| url | https://www.redalyc.org/articulo.oa?id=50550303 |