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Paper Information

Journal:   IRANIAN JOURNAL OF GEOLOGY   SUMMER 2011 , Volume 5 , Number 18; Page(s) 53 To 62.
 
Paper: 

BIOSTRATIGRAPHY AND PALAEOECOLOGY OF UPPER ALBIAN-CENOMANIAN DEPOSITS OF SOUTHWESTERN FIROZABAD

 
 
Author(s):  SAFDARI ADIMI HASSAN, VAZIRI MOGHADDAM H., TAHERI A., GHOBISHAVI A., SEYRAFIAN A.
 
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Abstract: 

In this research, biostratigraphy and palaeoecology of the Sarvak Formation (208 meter thickness) in southwestern Firozabad, has been studied. Paleontological and biostratigraphical studies resulted in the identification of five faunal assemblages. The biostratigraphic study led to recognition of five biozones, in ascending order biozones are as follow: Conicorbitolina conica - Trocholina assemblage zone, Favusella washitensis range zone, Rudist debris zone, Nezazzata – Alveolinides assemblage zone, and Oligosteginids assemblage zone. According to these biozones, the Sarvak Formation is Late Albian-Cenomanian in age. Palaeoecological analysis yielded four assemblages. The first assemblage is composed of big conical and agglutinated foraminifera with low diversity. The second assemblage is mostly composed of large conical and agglutinated foraminifera and also small agglutinated foraminifera. This assemblage has diverse fossils. The third assemblage includes small agglutinated foraminifera and no large conical and agglutinated foraminifera are observed, the diversity in this assemblage is variable. The fourth assemblage is different from other three assemblages and includes oligosteginidae and planktonic foraminifers. The diversity in this assemblage is also variable. Differences between fossil assemblages are mainly interpreted and related to ecologic and biotic conditional changes such as: oxygen contents, depth, disappearance of symbiosis algae, sedimentation rate and type of bottom sediments (substrates).

 
Keyword(s): LATE ALBIAN-CENOMANIAN, FORAMINIFERA, BIOSTRATIGRAPHY, SARVAK FORMATION, PALAEOECOLOGY
 
 
References: 
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Click to Cite.
APA: Copy

SAFDARI ADIMI, H., & VAZIRI MOGHADDAM, H., & TAHERI, A., & GHOBISHAVI, A., & SEYRAFIAN, A. (2011). BIOSTRATIGRAPHY AND PALAEOECOLOGY OF UPPER ALBIAN-CENOMANIAN DEPOSITS OF SOUTHWESTERN FIROZABAD. IRANIAN JOURNAL OF GEOLOGY, 5(18), 53-62. https://www.sid.ir/en/journal/ViewPaper.aspx?id=274385



Vancouver: Copy

SAFDARI ADIMI HASSAN, VAZIRI MOGHADDAM H., TAHERI A., GHOBISHAVI A., SEYRAFIAN A.. BIOSTRATIGRAPHY AND PALAEOECOLOGY OF UPPER ALBIAN-CENOMANIAN DEPOSITS OF SOUTHWESTERN FIROZABAD. IRANIAN JOURNAL OF GEOLOGY. 2011 [cited 2021May08];5(18):53-62. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=274385



IEEE: Copy

SAFDARI ADIMI, H., VAZIRI MOGHADDAM, H., TAHERI, A., GHOBISHAVI, A., SEYRAFIAN, A., 2011. BIOSTRATIGRAPHY AND PALAEOECOLOGY OF UPPER ALBIAN-CENOMANIAN DEPOSITS OF SOUTHWESTERN FIROZABAD. IRANIAN JOURNAL OF GEOLOGY, [online] 5(18), pp.53-62. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=274385.



 
 
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