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Paper Information

Journal:   GEOPERSIA   SUMMER-FALL 2017 , Volume 7 , Number 2; Page(s) 237 To 254.
 
Paper: 

FORAMINIFERAL BIOZONATION AND MORPHOGROUPS FROM SHALE MEMBER OF THE AITAMIR FORMATION IN MARAVEH TAPPEH SECTION, NORTHWEST KOPPEH-DAGH BASIN

 
 
Author(s):  MOTAMEDALSHARIATI MARYAM*, SADEGHI ABBAS, VAZIRI MOGHADDAM HUSSIEN, MOUSSAVI HARAMI REZA
 
* DEPARTMENT OF GEOLOGY, FACULTY OF SCIENCE, UNIVERSITY OF BIRJAND, BIRJAND, IRAN
 
Abstract: 

The Aitamir Formation is divided into two members the lower sandstone and the upper shale.32 genera and 57 species of foraminifera have been recognized. According to identified foraminifera Rotalipora appenninica Interval Zone, Rotalipora globotruncanoides (Rotalipora brotzeni) interval zone and Whiteinella aumalensis - Dicarinella canaliculata assemblage zone are proposed and a late Albian-late Cenomanian age is attributed for upper shale member of the Aitamir Formation. Palaeoecological studies led to recognition of three calcareous, two agglutinated benthic and three planktonic foraminifera morphogroups. In the lower one third of shale member, the planktonic foraminifera are more abundant than agglutinated benthic foraminifera, while in the upper one third, the frecuency of all morphogroups increase. Calcareous benthic morphogroups could be attributed to aerobic, shallow to slightly deep water, oligotrophic environment; while the agglutinated benthic morphogroups show aerobic, mesotrophic to eutrophic condition that are characterized by a dominance of arenaceous shallow infaunal specimens which are active deposit feeders. Planktonic foraminifera morphogroups with trochospiral and smooth test show that may have lived near the surface water in the aerobic to semi aerobic environmental conditions.
The increasing number of planktonic foraminifera and specially keeled species could suggest recovery in paleoenvironmental conditions.

 
Keyword(s): FORAMINIFERA, BIOSTRATIGRAPHY, MORPHOGROUPS, AITAMIR FORMATION, KOPPEH-DAGH
 
 
References: 
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Click to Cite.
APA: Copy

MOTAMEDALSHARIATI, M., & Sadeghi, A., & VAZIRI MOGHADDAM, H., & MOUSSAVI HARAMI, R. (2017). FORAMINIFERAL BIOZONATION AND MORPHOGROUPS FROM SHALE MEMBER OF THE AITAMIR FORMATION IN MARAVEH TAPPEH SECTION, NORTHWEST KOPPEH-DAGH BASIN. GEOPERSIA, 7(2), 237-254. https://www.sid.ir/en/journal/ViewPaper.aspx?id=570061



Vancouver: Copy

MOTAMEDALSHARIATI MARYAM, Sadeghi Abbas, VAZIRI MOGHADDAM HUSSIEN, MOUSSAVI HARAMI REZA. FORAMINIFERAL BIOZONATION AND MORPHOGROUPS FROM SHALE MEMBER OF THE AITAMIR FORMATION IN MARAVEH TAPPEH SECTION, NORTHWEST KOPPEH-DAGH BASIN. GEOPERSIA. 2017 [cited 2021May13];7(2):237-254. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=570061



IEEE: Copy

MOTAMEDALSHARIATI, M., Sadeghi, A., VAZIRI MOGHADDAM, H., MOUSSAVI HARAMI, R., 2017. FORAMINIFERAL BIOZONATION AND MORPHOGROUPS FROM SHALE MEMBER OF THE AITAMIR FORMATION IN MARAVEH TAPPEH SECTION, NORTHWEST KOPPEH-DAGH BASIN. GEOPERSIA, [online] 7(2), pp.237-254. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=570061.



 
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