Journal of Geology & Geophysics
Open Access

Biostratigraphy and paleoecology of the larger foraminifera on a carbonate ramp in SW Iran

International Conference on Geology

June 22-23, 2015 Florida, USA

Tahereh Habibi

Posters-Accepted Abstracts: J Geol Geosci

Abstract :

In this research larger benthic foraminifera distribution and their paleoenvironmental characteristics are used to introduce biostratigraphic zonation, paleoenvironmental reconstruction and paleoecological interpretation of the Oligocene Asmari Formation in Fars Province, Zagros Basin, SW Iran. Two stratigraphic successions were examined for these purposes. The first (Khollar Section) is Rupelian in age and the second (Siakh Section) is of Chattian age. Two foraminiferal associations are recognized in the investigated sections. The identified foraminiferal associations represent a salinity value of 40 to 50 psu and a depth range of lower than 40 m, warm tropical and sub tropical waters with temperature of 18-25º C at Rupelian time. More restricted condition through Chattian Stage has resulted in a shallower depth and higher salinity of more than 50 psu with water temperature being higher than 20º C in the oligotrophic to meotrophic conditions. Restricted in marine circulation is suggested to have controlled these associations.