نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشگاه شهید چمران اهواز - دانکشده علوم زمین- گروه زمین شناسی نفت و حوضه های رسوبی
2 گروه زمین شناسی نفت و حوضه های رسوبی- دانشکده علوم زمین- دانشگاه شهید چمران اهواژ- اهواز- ایران
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
In this research, the Neocomian-late Aptian Garau Formation, in the surface outcrop of Kabir-kuh anticline (Ilam), has been subjected to geochemical evaluation using Rock-Eval pyrolysis and organic petrographic techniques. For this purpose, 19 surface samples were taken at regular intervals of 30 meters. Results from this study indicated that there is highly organic-rich zone at the base of the Garau Formation. A relatively organic-rich zone exists in the middle parts of the Garau Formation, which progressively changes into organic-poor section upward in the studied section. Based on the Rock-Eval pyrolysis results, the studied samples from the Garau Formation have little hydrocarbon generation potential and are highly mature in the studied section. Also, according to organic petrographic observations, the organic-rich sections of the Garau Formation contains abundant solid bitumen with foramboidal pyrite. Accordingly, it can be concluded that anoxic conditions existed in the paleo-depositional environment of the Garau Formation. At present-day conditions, the studied formation can be important in terms of unconventional hydrocarbon resources (Gaseous hydrocarbons trapped inside organic porosity).
کلیدواژه‌ها [English]
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