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International Journal of Geography and Geology

May 2017, Volume 6, 5, pp 113-122

Microbiostratigraphy and Sedimentary Environment of the Sarvak and Kazhdumi Formations in Bahregansar Oil Field

Somayeh Ahmadi


Seyed Hamid Vaziri


Keyvan Khaksar


Davood Jahani


Mohsen Ale Ali

Somayeh Ahmadi 1 

Seyed Hamid Vaziri 2 ,

Keyvan Khaksar 3
Davood Jahani 2 Mohsen Ale Ali 1 
  1. Department of Geology, Science and Research Branch, Islamic Azad University, Tehran, Iran 1

  2. Department of Geology, North Tehran Branch, Islamic Azad University, Tehran, Iran 2

  3. Faculty of Basic Sciences, Qom Branch, Islamic Azad University, Qom, Iran 3

Pages: 113-122

DOI: 10.18488/journal.10.2017.65.113.122

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Article History:

Received: 06 September, 2016
Revised: 14 July, 2017
Accepted: 31 July, 2017
Published: 09 August, 2017


The aim of this paper is investigation of microbiostratigraphy and sedimentary environment of the Sarvak and Kazhdumi formations in Bahregansar oil field. To investigate these units, microbiostratigraphy and microfacies analyses were carried out on nearly 600 m of cuttings, including cutting plug samples and thin sections prepared from Bahregansar oil field in the Persian Gulf, SW Iran. 22 Species and genera of foraminifera were recognized and four biozones were identified. Also the microfacies analysis of the Sarvak and Kazhdumi formations in Bahregansar oil field is led to recognition fourteen microfacies of three facies belts (depositional environment) including open marine, bar and lagoon environments.

Contribution/ Originality
This study is one of very few studies which have investigated the Upper Cretaceous of oil fields. The results of this study will help to make Upper Cretaceous biozones, interpretation of microfacies and depositional environments.


Microbiostratigraphy, Depositional environment, Microfacies, Sarvak, Kazhdumi, Albian, Cenomanian.


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This study received no specific financial support.

Competing Interests:

The authors declare that they have no competing interests.


All authors contributed equally to the conception and design of the study.

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