Evaluation of the Paleocene-Eocene deposits, Jahrum Formation, base on 2-D seismic data, Central Persian Gulf

Iranian Journal of Earth Sciences

مقاله 4، دوره 4، شماره 2، دی 2012، صفحه 104-109   

نوع مقاله: Original Research Paper

نویسندگان

Naser Abdi^{* 1}؛ Hossain Rahimpour-Bonab²؛ Sayyed Reza Moussavi-Harami³؛ Iraj Abdollahi Fard⁴؛ Davood Jahani⁵؛ Ali Chehrazi⁶

¹PhD Student, Department of Geology, Science and Research branch, Islamic Azad University, Tehran, Iran

²Department of Geology, Science faculty, Tehran University, Tehran, Iran

³Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran

⁴NIOC Exploration Directorate, Tehran, Iran

⁵Department of Geology, North Tehran Branch, Islamic Azad University, Tehran, Iran

⁶NIOC, IOOC, Tehran, Iran

چکیده

The Persian Gulf is part of an asymmetric foreland basin related to the Zagros Orogen. It has been episodically flooded for much of its history which are reflected in sedimentary successions. The evaluation of this succession from depositional trend view, in central Persian Gulf during Paleocene-Eocene, is the aim of this article. The sedimentary rocks physical characteristics effects on seismic data, gives an appearance to the data, which can be a key factor for their evaluation. The reflectors geometry and terminations have been used for their interpretation. The current study the uses seismic data beside drilling wells data, including cutting description and logs. The study result shows progradation toward northeast, the direction in which the accommodation space is increasing. The sedimentary environments changes to lagoon, platform and basin which affect the deposits. These environments demonstrate suitable condition for carbonates and evaporites precipitation, in Jahrum Formation, which are approved by cutting ription. The sediments extension and its trend show high thickness of Paleocene-Eocene deposits in north west of the study area, where the basin is deeper. In some intervals the thickness of sediments is decreased in deep basin, due to sediment starvation.

کلیدواژه‌ها

Accommodation space؛ Jahrum Formation؛ Sediments thickness