چينه نگاري زيستي و محيط رسوبي سازند آسماري در چاه شماره 30 آغاجاري، خوزستان

Biostratigraphy and Sedimentary Environment of The Asmari Formation in Aghajari Well Number 30, Khuzestan Area

The Asmari Formation has a thickness of 385m in the Aghajari well#30. This formation was studied from biostratigrarphy and sedimentary environment point of view. Study of benthic foraminifera led to recognition of 22 genera and 17 species. Based on the distribution of foraminifera, three assemblage zones were identified. The late Oligocene- Early Miocene (Aquitanian-Burdigalian) is suggested for the Asmari Formation at the study area. Also, 7 carbonate microfacies and 1 silisiclastic microfacies were identified within the Asmari Formation. These microfacies belong to the beach, lagoon, barrier and shallow open marine environments. As a result a hemoclinal ramp is suggested for deposition of the Asmari Formation.