摘要:
阿尤恩盆地成盆受控于非洲板块和南美板块,也曾受到北美板块的强烈影响,后期又受到阿特拉斯山系等造山运动影响。阿尤恩盆地成岩、成藏过程复杂,多期次叠加。自泛非构造运动以来,阿尤恩盆地沉积连续,不同层系中均发育有机质含量高的地层,为优质烃源岩;不同层系均发育有厚度大、分布稳定的碎屑岩,孔隙度、渗透率高,亦发育有碳酸盐岩台地、生物礁等,为优质的储集层;不同层系中的页岩、盐岩等,均可成为优质的盖层。烃源岩、储集层、盖层等配置好。目前阿尤恩盆地油气资源勘探开发投入较西非其他盆地少,但只要加强生、储、盖层配置研究,有针对性地开展地质勘探,在油气资源开发中采用先进技术等,未来将具勘探潜力与经济价值。
Abstract:
Coastal sedimentary basins in West Africa are originally formed on a typical passive continental margin. Most of them are rich in petroleum resources. The El Aaiun Basin is located in the southern Morocco, of which the tectonic position is different from others in West Africa. In the beginning, the El Aaiun Basin was not only controlled by the movement of African and South American plates, but also North American plate. In the later stage, it was influenced by the Atlas Saharien orogeny. Since the Pan-African orogeny, however, the El Aaiun Basin has remained stable in tectonics, in spite of local volcanic activities. There filled with huge detrital and carbonate rocks as well as halite formations in the basin. Source rocks of hydrocarbon and reservoirs are widely developed. It seems that there are uncertainties in petroleum exploration in the basin for the time being, it remain as an attractive target for oil explorations as long as the studies aiming at source, reservoir and cap rocks are accelerated. Moreover, the use of advanced technology for deep-sea exploration will certainly help the exploration in the basin.
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