Paleocene-Oligocene dinoflagellate cysts from the Siah Anticline, Zagros Basin, Southwest Iran

Authors

  • Ali Akbar Jafar Nezhad Department of Geology, Islamic Azad University, Tehran North Branch, Tehran City, Tehran
  • Ebrahim Ghasemi-Nejad Ghasemi-Nejad Department of Geology, College of Science, University of Tehran, Tehran

DOI:

https://doi.org/10.11606/issn.2316-9095.v16i2p25-35

Keywords:

Pabdeh Formation, Dinoflagellate cysts, Paleogene, Palynostratigraphy, Thermal maturity.

Abstract

A section of the Pabdeh Formation dating back to the Paleocene-Oligocene has been sampled in the Zagros Basin in Southwest Iran for palynological investigations and evaluation of thermal maturity and hydrocarbon generation potential. In total, 125 rock samples were collected and processed palynologically. The samples yielded rich assemblages of dinoflagellate cysts, and 65 cyst species were identified. Some index species allowed us age dating and establishment of seven dinoflagellate cyst zones in accordance with the existing European zonation. The dinoflagellate cyst zones allowed precise age assignment of the formation under study to late Paleocene to early Oligocene. For thermal maturity evaluation, spore and pollen grain color were correlated against the standard color chart prepared by the Shell Oil Company. The properties of the samples, according to palynomorph color changes, suggest that this formation is potentially oil prone and may have produced oil.

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Author Biography

  • Ali Akbar Jafar Nezhad, Department of Geology, Islamic Azad University, Tehran North Branch, Tehran City, Tehran


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Published

2016-07-28

Issue

Vol. 16 No. 2 (2016)

Section

Articles

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How to Cite

Nezhad, A. A. J., & Ghasemi-Nejad, E. G.-N. (2016). Paleocene-Oligocene dinoflagellate cysts from the Siah Anticline, Zagros Basin, Southwest Iran. Geologia USP. Série Científica, 16(2), 25-35. https://doi.org/10.11606/issn.2316-9095.v16i2p25-35