شماره ركورد :
759129
عنوان مقاله :
بايوستراتيگرافي سازند گورپي در ميدان نفتي مارون
عنوان فرعي :
Biostratigraphy of the Gurpi Formation in Zagros Basin, Iran
پديد آورندگان :
صادقي، عباس نويسنده دانشكده علوم زمين- دانشگاه شهيد بهشتي , , دارابي، قمرناز نويسنده كارشناس ارشد چينه‌شناسي و فسيل‌شناسي، دانشگاه شهيد بهشتي، ايران ,
اطلاعات موجودي :
فصلنامه سال 1394 شماره 60
رتبه نشريه :
علمي پژوهشي
تعداد صفحه :
18
از صفحه :
19
تا صفحه :
36
كليدواژه :
بايوستراتيگرافي , سازند گورپي , فرامينيفرهاي پلانكتون , ميدان نفتي مارون
چكيده فارسي :
به منظور مطالعه، بايوسترا تيگرفي سازندگورپي در چاه‌هاي شماره 45، 21، 43، 123، 41 ميدان نفتي مارون 525 مقطع نازك مورد مطالعه قرار گرفته است. ضخامت سازند گورپي در اين چاه‌ها به ترتيب 181، 186، 194، 197،222 متر و ليتولوژي عمده آن شامل مارن، مارن آهكي، شيل، آهك شيلي و آهك مي‌باشد. مرز زيرين سازند گورپي با سازند ايلام به صورت هم‌شيب و مرز بالايي آن باسازند پابده به صورت ناپيوسته همراه با يك نبود چينه‌شناسي در طول پاليوسن مي‌باشد. در اين مطالعه ضمن تشخيص 54 گونه متعلق به 18جنس از فرامينيفرها 8 بايوزون در چاه‌هاي مذكور شناسايي و معرفي شده است. سن سازند گورپي در چاه‌هاي مورد مطالعه بر اساس بايوزون‌هاي شناسايي شده سانتونين پسين تا مايسريشن پسين معرفي شده است. مطالعه سازند گورپي در چاه‌هاي مورد مطالعه (سانتونين پسين تاماستريشين پسين) و مقايسه آن با برش تيپ (كامپانين پيشين تا تا ماستريشن پسين) نشان مي‌دهد رسوب‌گذاري سازند گورپي در چاه‌هاي مورد مطالعه در ميدان نفتي مارون زودتر صورت گرفته است.
چكيده لاتين :
Introdaction The Gurpi Formation is developed in the central of the Zagros fold in Khuzestan, Lorestan and Fars provinces of southwestern Iran, defined az theZagros basin ,The Gurpi refers to Gurpi Mountain in the Kuzestan province.type section gurpi,which is N of the Lali oil wells and N-E of Masjed – Soleiman city,comprises 320m argillaceous limestone and gry-to-blueshale marl(James and Wynd,1965)Although the boundary the Gurpi Formation and the underlying Ilam Formation is reported to be gradual,the altered facies found at this boundrary could be a sign of a low disconformity or even unconformity.In some place,the Ilam Formation does not exist and tne Gurpi Formation lie abave the Sarvak Formation.The upper boundry of the Gurpi Formation is more noticeable and there are different overlying formations.In Khozstan province,the Gurpi Formation is overlain by purplr shale of pabdeh Formation with signs of unconformity.The Gurpi Formation is not always concurrent.Biostratigraphy and lithological characteries of the Gurpi Formation were studied by James and Wynd (1965), Taheri (1998), KameliAzao (2002), Zarei (2005), Hematinasab (2008), Madavian (2009), Tavalaian (2011).This research study aims at describing the biostratigraphy of Gurpi Formation.In this study five stratigraphic section is investigate for its Planktonc Foraminiforal content. Method and Matrials This study involves five stratigraphic sections from the Gurpi Formation that were measured the ticknes and determind of Litostratigrapic limit as well as recognizd of detail litostrstigray the Gurpi Formation.More than 525 thine sections were examined. Some samples from the underlying Pabdeh Formation were also analysed for comparison.then recognizd Genus and species of Planktonic foraminifera and biozones mentioned wells have been introduced. In order to the biozonation of Gurpi Formation, stratigraphic distribution of well- known foraminifora is recognizd and then biozones are established through stratigraphic column. Discussion of Results & Conclusions In order to study biostratigraphy Gurpi Formation, in Wells numbers 45,21, 43, 123, 41of Marun Oil Field sections, 525 thin sections were studied. The thickness of Gurpi Formation in this Wells is 181, 186, 194, 197, 222 meters and its main lithology includes Marl, Limy Marl, Limestone and Shale. In all of the wells Lower boundary of Gurpi Formation is transition with Ilam Formation, and its upper boundary with Pabdeh Formation is unconformite accompanied by lack of stratigraphy in the length of Paleocene. In this study ,alonge with recognition of 54 species belonging to 18 Genus of Planktonic foraminifera, 8 biozones mentioned wells have been introduced as follows. 1) Dicarinella asymetrica zone (Upper Santonian), 2) Globotruncanita elevata zone (Lower Campanian), 3Globotrnucana ventricosa zone (Middle Campanian), 4) Radotruncana calcarata zone (Upper Campanian), 5) Globltruncanella havanensis zone (Upper Campanian), 6) Globotruncana aegyptica zone (Uppermost Campanian), 7) Gansserina gansseri zone (Upper Companian- Lower Massrtistian), 8) Contusotruncana contusa zone (Middle to Upper Massrtistian) Based on the assemblage of foraminifer and determinate biozones,the age of Gurpi Formation in The examined wells are determined of Late Santonian to Late Maastrichtian. In this study, Gurpi Formation in of Marun Oil Field with Section samples in the region Lali (Khuzestan) has been compared and .show that the sedimentation of Gurpi Formation has been starte in Wells at Latest Santonian time, wile in the type section start at the Early Companian time. Keywords: Gurpi Formation, Planktonic Foraminifera, Biostratigraphy, Muron Oil Field.
سال انتشار :
1394
عنوان نشريه :
پژوهش هاي چينه نگاري و رسوب شناسي
عنوان نشريه :
پژوهش هاي چينه نگاري و رسوب شناسي
اطلاعات موجودي :
فصلنامه با شماره پیاپی 60 سال 1394
كلمات كليدي :
#تست#آزمون###امتحان
لينک به اين مدرک :
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