4رئیس اداره زمین شناسی مدیریت اکتشاف شرکت ملی نفت ایران
چکیده
به منظور شناسایی میکروفسیل‌ها، بایوزوناسیون و تعیین سن سازند شوریجه در قسمت باختری کپه‌داغ خاوری، یک برش چینه‌شناسی در جنوب حمام‌قلعه انتخاب و مطالعه شده است. سازند شوریجه در برش چینه‌شناسی حمام‌قلعه 953 متر ستبرا دارد و برخلاف دیگر برش‌های شناخته شده، از پنج واحد سنگی شامل واحد تخریبی- تبخیری زیرین، واحد کربناته زیرین، واحد تخریبی- تبخیری میانی، واحد کربناته بالایی و واحد تخریبی بالایی تشکیل شده است. در این بررسی‌ها در مجموع 402 مقطع نازک مورد مطالعه قرار گرفته است. بر پایه شناسایی میکروفسیل‌های موجود و ترسیم انتشار چینه‌شناسی آن‌ها، 3 بایوزون در نهشته‌های مورد مطالعه تشخیص داده شده است. بر این اساس، سن سازند شوریجه در برش چینه‌شناسی حمام‌قلعه، کیمریجین پسین؟- هوتری‌وین تعیین شده است.
Biostratigraphy of the Shurijeh Formation in stratigraphic section of Hamam Ghaleh, south of Kalat- e Naderi
نویسندگان [English]
Amirmohammad Jamali1؛ Abbas Sadeghi2؛ Ahmad Shemirani3؛ Darush Baghbani4
1Ph.D. student, Shahid Beheshti University
2Associate Professor, Department of Geology, Shahid Beheshti University
3Professor, Department of Geology, Shahid Beheshti University
4Geology central manager, National Iranian Oil Company, Exploration Directorate
چکیده [English]
In order to micropaleontology, biozonation and age determination of Shurijeh Formation in west part of eastern Kopet Dagh, a stratigraphic section was selected and studied in south of Hamam Ghaleh. Shurijeh Formation with 953 m thickness in Hamam Ghaleh stratigraphic section consists of five lithological units which is different from other identified sections. These lithological units include lower terrigenous-evaporite unit, lower carbonate unit, middle terrigenous-evaporite unit, upper carbonate unit and upper terrigenous unit. A total of 402 samples were examined in this study. Three biozones were determined in studied deposits based on recognized microfossils and their stratigraphic range chart. In this study the Late Kimmeridgian?- Hauterivian age was ascribed to Shurijeh Formation in Hamam Ghaleh stratigraphic section.
کلیدواژه‌ها [English]
Shurijeh Formation, Biostratigraphy, Late Kimmeridgian, Hauterivian, Kopet Dagh
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Plate 1
Figs. A, B: Pseudospirocyclina maynci Hottinger, 1967; C, D: Anchispirocyclina lusitanica (Egger, 1902); E, F: Torinosuella peneropliformis (Yabe and Hanzawa, 1926); G:Haplophragmiumlutzei Hanzlikova, 1926; H: Pseudocyclammina sp.
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