Paleoecology of Eocene deposits in the Sabzevaran and Sad sections based on small benthic foraminifera, NW Jiroft

Hosseini Raviz, Seyed Mohammad Reza; Afghah, Massih; Parvanenejad Shirazi, Mahnaz

doi:10.22067/sed.facies.2021.41987

Paleoecology of Eocene deposits in the Sabzevaran and Sad sections based on small benthic foraminifera, NW Jiroft

Document Type : Original Article

Authors

Seyed Mohammad Reza Hosseini Raviz ¹

Massih Afghah ²

Mahnaz Parvanenejad Shirazi ³

¹ Ph.D. student in Stratigraphy & Paleontology, Department of Geology, Fars Science and Research Branch, Islamic Azad University, Fars, Iran

² Associate Professor, Department of Geology, Shiraz branch, Islamic Azad University, Shiraz, Iran

³ Associate Professor, Department of Geology, Payame Noor University, Tehran, Iran

10.22067/sed.facies.2021.41987

Abstract

For the paleoecology study of Lower Paleogene deposits based on foraminifera fauna in the NW of Jiroft situated in the Central Iran zone, two Sabzevaran (230m) and Sad (45m) sections were selected. Lithology of these sections mostly contain marl, sandstone and siltstone. Based on the presence of index planktonic foraminifers, the Late Eocene age can be deduced for the studied sections. In this study parameters such as paleo depth, oxygen and nutrient level and EP/IN morphotype ratio were studied. Based on this study neritic paleodepth proposed for these sections. EP/IN morphotype ratio in this part indicate of oligotrophic conditions in the base of sections that turn to eutrophic conditions toward top of Eocene part.

Keywords

words: Central Iran

Eocene

Paleoecology

small benthic foraminifera

Subjects