پیوندهای مفید
اخبار و اعلانات
آمار
| تعداد نشریات | 48 |
| تعداد شمارهها | 1,235 |
| تعداد مقالات | 10,619 |
| تعداد مشاهده مقاله | 21,489,665 |
| تعداد دریافت فایل اصل مقاله | 14,463,733 |
Lithostratigraphy and biostratigraphy of the Permian deposits in Sangsar section, North of Semnan, eastern Alborz | ||
| Quarterly Journal of Tethys | ||
| شناسنامه علمی شماره، دوره 4، شماره 1، خرداد 2016، صفحه 27-38 اصل مقاله (2.84 M) | ||
| چکیده | ||
| The Permian deposits in the stratigraphic section of Sangsar (located in the eastern Alborz), are the best expose in the Semnan area. This sequence consists of the Doroud (Asselian-Sakmarian), Ruteh (Artinskian-Murgabian) and Nessen (Early Djulfian) formations. The Dorud Formation in the studied section with 56 m thickness consists of conglomerate, sandstone and quartzite, which is disconformity overlies on the Mobarak Formation. The Ruteh Formation with a thickness of 116 m consists of fossiliferous limestones. This formation in the studied section can be subdivided into two rock units that is covered the Doroud Formation with a transitional contact and overlain by bauxite-laterite horizon of the Nessen Formation disconformable. The rich foraminifer fauna of the Ruteh Formation can be established three biozones include the Schubertella-Mesoschubertella Assemblage Zone (Artinskian), Dunbarulla-Codonofusiella Assemblage Zone (Early Murgabian), Pachyphloia-Neoendothyra Assemblage Zone (Late Murgabian). | ||
| کلیدواژهها | ||
| Permian؛ foraminifera؛ Biozonation؛ Sangsar area | ||
|
آمار تعداد مشاهده مقاله: 1,651 تعداد دریافت فایل اصل مقاله: 1,202 |
||