سامانه پشتیبانی خدمات اطلاعات

  اخبار و اعلانات

 آمار

تعداد نشریات162
تعداد شماره‌ها6,578
تعداد مقالات71,072
تعداد مشاهده مقاله125,699,776
تعداد دریافت فایل اصل مقاله98,933,810
Farahani, Tayebe, Yazdi, Mehdi, Majidifard, Mahmoud Reza. (1396). Distribution and Paleoecology of the Middle Jurassic Foraminifera from Eastern Alborz (Goznawwi section). , 7(2), 219-236. doi: 10.22059/geope.2017.228681.648300
Tayebe Farahani; Mehdi Yazdi; Mahmoud Reza Majidifard. "Distribution and Paleoecology of the Middle Jurassic Foraminifera from Eastern Alborz (Goznawwi section)". , 7, 2, 1396, 219-236. doi: 10.22059/geope.2017.228681.648300
Farahani, Tayebe, Yazdi, Mehdi, Majidifard, Mahmoud Reza. (1396). 'Distribution and Paleoecology of the Middle Jurassic Foraminifera from Eastern Alborz (Goznawwi section)', , 7(2), pp. 219-236. doi: 10.22059/geope.2017.228681.648300
Farahani, Tayebe, Yazdi, Mehdi, Majidifard, Mahmoud Reza. Distribution and Paleoecology of the Middle Jurassic Foraminifera from Eastern Alborz (Goznawwi section). , 1396; 7(2): 219-236. doi: 10.22059/geope.2017.228681.648300

Distribution and Paleoecology of the Middle Jurassic Foraminifera from Eastern Alborz (Goznawwi section)

Geopersia
مقاله 4، دوره 7، شماره 2 - شماره پیاپی 22287825، مهر 2017، صفحه 219-236    اصل مقاله (2.28 M)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22059/geope.2017.228681.648300
نویسندگان
Tayebe Farahani1؛ Mehdi Yazdi* 1؛ Mahmoud Reza Majidifard2
1Department of Geology, Faculty of Science, University of Isfahan, P.O. Box, 81746-73441, Isfahan, Iran.
2Research Institute for Earth Sciences, Geological Survey of Iran, P.O. Box, 1385-1494, Tehran, Iran
چکیده
Analysis of benthic foraminiferal assemblages was performed in Callovian deposits of the Farsian Formation Northeastern Alborz; Iran. The sequence of Callovian at the Goznawwi area consists mainly of soft marls , which contain high-diversity calcareous assemblages. In this foraminiferal succession nine morphogroups were differentiated according to shell architecture (general shape, mode of coiling and number of chambers), integrated with the supposed microhabitat (epifauna, shallow infauna and deep infauna) and feeding strategy (suspension-feeder, herbivore, bacterivore, etc.). Based on foraminiferal assemblage, we have distinguished nine type of morphogroups, including seven calcareous benthic and two agglutinated benthic morphogroups. The environmental evolution of the analyzed section is interpreted by using the stratigraphic distribution of morphogroups, combined with species diversities and sedimentary data, in a sequence stratigraphic framework. Palaeoecological analysis of the foraminiferal assemblages based on morphogroups analysis and macroinvertebrate has shown that this sediment was deposited on the open marine, deeper of the shelf water, with normal saline (euhaline), with sub-oxyed (or dysoxic) condition and eutrophic environment.
کلیدواژه‌ها
Foraminifera؛ Morphogroup؛ Farsian formation؛ Iran
آمار
تعداد مشاهده مقاله: 900
تعداد دریافت فایل اصل مقاله: 951





سامانه مدیریت نشریات علمی. قدرت گرفته از سیناوب