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Iranian Journal of Earth Sciences
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Hadavi, F., Notghi Moghaddam, M., Khodadadi, L. (2016). Biostratigraphy and paleoecology of Cretaceous rocks based on calcareous nannofossil in Sarayan section, East Iran. Iranian Journal of Earth Sciences, 8(1), 52-68.
Fatemeh Hadavi; Marziyeh Notghi Moghaddam; Lida Khodadadi. "Biostratigraphy and paleoecology of Cretaceous rocks based on calcareous nannofossil in Sarayan section, East Iran". Iranian Journal of Earth Sciences, 8, 1, 2016, 52-68.
Hadavi, F., Notghi Moghaddam, M., Khodadadi, L. (2016). 'Biostratigraphy and paleoecology of Cretaceous rocks based on calcareous nannofossil in Sarayan section, East Iran', Iranian Journal of Earth Sciences, 8(1), pp. 52-68.
Hadavi, F., Notghi Moghaddam, M., Khodadadi, L. Biostratigraphy and paleoecology of Cretaceous rocks based on calcareous nannofossil in Sarayan section, East Iran. Iranian Journal of Earth Sciences, 2016; 8(1): 52-68.

Biostratigraphy and paleoecology of Cretaceous rocks based on calcareous nannofossil in Sarayan section, East Iran

Article 5, Volume 8, Issue 1, Winter and Spring 2016, Page 52-68  XML PDF (2.23 MB)
Document Type: Original Article
Authors
Fatemeh Hadavi1; Marziyeh Notghi Moghaddam 2; Lida Khodadadi3
1Professor, Department of Geology, Ferdowsi University of Mashhad, Mashhad, Iran
2Assistant Professor, Department of Geology, Payame Noor University, Tehran, Iran
3Department of Geology, Payame Noor University, Tehran, Iran
Abstract
Calcareous nannofossil assemblages recovered from a long, continuous section have been described from the Sarayan region in Lut Block in east Iran. The marine Upper Cretaceous sediments of this section yield medium diverse and well-preserved calcareous nannofossil assemblages. A structural analysis of Upper Cretaceous calcareous nannofloras has revealed 30 nannofossil species. A revised zonation for the Cretaceous is used to subdivide the Cretaceous deposits in this section into five zones (CC21-CC25). Finally, the paleoecological applications of Upper Cretaceous nannofossils are considered in this section. Surface water temperature, productivity, and fertility are believed to have been the principal factors controlling species distribution. Warm water indicators such as Uniplanarius sissinghii, Uniplanarius trifidus, and Micula murus suggest warm surface water conditions in the studied thickness. In the Sarayan section, based on Lithraphidites carniolensis and Watznaueria barnesae, lower fertility conditions with low productivity at the Campanian to Maastrichtian were suggested for this region.   
Keywords
Biostratigraphy; Paleoecology; Cretaceous; Calcareous nannofossil; Sarayan; Iran
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