Microfacies analysis and environmental interpretation of the Qom Formation in Chenar area (northwest of Kashan)

Document Type : بدون عنوان

Authors

• Elham Behforouzi
• Amrollah Safari
• Hosein Vaziri-Moghaddam

10.22067/sed.facies.v2i2.2574

Abstract

Qom Formation deposits in the Chenar area, about 50 km northwest of Kashan, has 147 m thickness and consists of sandy limestone, thin to thick bedded massive limestone and shale. They unconformably overlain the Eocene volcanic rocks and the upper boundary is covered by alluvium. 8 carbonate microfacies and 1 silisiclastic facies, related to semi- restricted lagoon and open marine (slop and basin) environment, were identified. Based on 112 thin section studied, microfacies analysis and field observation, the Qom Formation at the study area deposited on open- shelf setting.

Keywords

• microfacies
• Qom Formation
• open shelf
• Oligocene

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