Microfacies and sedimentary environment of Lower Cretaceous deposits in Qumenjan section, south west of Qayen
Subject Areas :حوریه زارعی 1 , سید ناصر رئیس السادات 2 , مریم مرتضوی مهریزی 3 , محسن یزدی مقدم 4
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Abstract :
In order to study the Lower Cretaceous deposits, Qumenjan section has been selected and measured. Field and lab studies of the Lower Cretaceous deposits in this section reveal a gradual change of the depositional setting, from a fluvial depositional system (continental environment) to a mixed siliciclastic- carbonate ramp (marine environment). The continental deposits of the studied section include conglomerate and sandstone lithofacies that are deposited in a proximal gravel- bed braided river. In the studied sedimentary sequence, the marine siliciclastic- carbonate facies associations are formed in three tidal flat, lagoon and shoal facies belt in the inner and mid ramp setting.
