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The Qatar-Cowbandi arc in Persian Gulf during Late Cretaceous- Eocene Epoch

Document Type : Original Research Paper

Authors

1 Department of Geology, fundamental faculty, Ahar branch, Islamic Azad University, Ahar, Iran

2 Department of Geology, Science faculty, Ferdowsi University of Mashhad, Mashhad, Iran

Abstract

The Qatar-Cowbandi arc is a giant regional anticline with northeast- southwest direction, runs through the Qatar peninsula, extends northeastward through the Iranian sector of the Persian Gulf. The arc in the Iranian part is subject of the study meditation. In this paper the interpretation of 2D seismic in the interval of top of Laffan to top of Jahrum formations, allows the regional research of the arc in the study area. Seismic interpretation in both horizons have distinct indications for existing a platform in the area with northwest- southeast direction, which smoothly dipping toward northeast, with some highs resulted from salt diapirs activity. According to isopach map provided for sedimentary sequence of Ilam-Jahrum formations, which was prepared based on 2D seismic data, the sediments thickness decreases in the platform area. The platform is interpreted as crest of arc, on which low rate of sediment precipitation occurred due to low accommodation space, resulted from the arc uplifting activity. Therefore, the arc and also salt diapers, should be considered as regional important factor in sequence stratigraphy study for the precipitated sediments.

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References
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Scientific Quarterly Journal of Geosciences
Volume 28, Issue 110
December 2018
Pages 13-22
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