Research Article
Biostratigraphy of Gurpi Formation (Late Cretaceous) in Interior Fars: Bavan Area, Central Zagros (Southwestern Iran)
| M. Afghah* and A.A. Ghiyasi | |
| Geology Department, Azad Islamic University, Shiraz Branch, Shiraz, Iran | |
| Corresponding Author : | Afghah M Geology Department Azad Islamic University Shiraz Branch, Shiraz, Iran E-mail: massihafg2002@yahoo.com |
| Received March 28, 2013; Accepted April 26, 2013; Published May 05, 2013 | |
| Citation: Afghah M, Ghiyasi AA (2013) Biostratigraphy of Gurpi Formation (Late Cretaceous) in Interior Fars: Bavan Area, Central Zagros (Southwestern Iran). J Earth Sci Climate Change 4:137. doi: 10.4172/2157-7617.1000137 | |
| Copyright: © 2013 Afghah M, etal. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. | |
Abstract
The Gurpi Formation is well exposed in the Bavan area (southwestern Iran). It consists of 160 m of marl with intercalations of limy marl. Here, on the basis of foraminiferal studies, 78 species and 20 genera of planktonic foraminifera were identified. Based on the stratigraphic distribution of the well known foraminifers, three foraminiferal biozones were established. Generally the first appearance of Globotruncana falsostuarti has determined as lower biostratgraphic limit of the Gurpi Formation and the upper biostratigraphic limit of the Gurpi is marked by last occurrence of Abathomphalus mayaroensis which is synchronous of Late Maastrichtian in Bavan area. Foraminiferal investigations show that the biostratigraphic limits of the Gurpi Formation in Bavan stratigraphic section are assigned to the Middle Campanian through the Late Maastrichtian.
