Microfacies and sedimentary environment of Lower Cretaceous deposits in Qumenjan section, south west of Qayen
Subject Areas :Hourieh Zarei 1 , Seyed Naser Raisossadat 2 * , M. Mortazavi 3 , M. Yazdi 4
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2 - دانشگاه بیرجند
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Keywords: MicrofaciesSedimentary environmentLower Cretaceous Qayen.,
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.