Stratigraphy of the Oligocene-Early Miocene Successions, Sangaw area, Kurdistan Region, NE- Iraq
Description
Forty meter outcrop of the Darzila section from the Oligocene- Early Miocene succession was studied, which is located within the Low Folded Zone, Ashdagh Mountain, Sangaw area, Sulaimaniyah Governorate, Kurdistan region, Northeastern Iraq. This study is focused on the lithostratigraphy and biostratigraphy of Oligocene-Miocene sediments of the he studied section which subdivided into six biozones based on the forty three species from twenty seven genera of Large Benthic Foraminifera (LBF) that identified and non-foraminifera fossils such as echinoid fragments, bryozoan, red algae, green algae, bivalve and coral, the biozones are from old to young: Nummulites vascus - Nummulites fichteli Assemblage Zone, Eulepidina dilatata - Nephrolepidina marginata Concurrent-Range Zone, Praerhapydionina delicata- Peneroplis evolutus- Concurrent Range Zone, Meandrospina anahensis - Austrotrillin asmariensis Interval Zone, Ammonia beccarii –Austrotrillina howchini Assemblage Zone, Dendritina rangi- Rotalia viennoti Assemblage Zone, each of these biozones represents certain lithostratigraphic units, which are (from old to young), Sheikh Alas, Baba, Bajawan, Anah, Jeribe, and Fatha formations. Biozones were correlated with different studied in side and out side Ira, the correlation showed a comparison between the biostratigraphic zones established in this study with other equivalents of the commonly used Large Benthic Foraminifera (LBF) zonal scheme around the Oligocene-Early Miocene in and outside of Iraq.