Biostratigraphy and Lithostratigraphy of Pabdeh Formation Sediments (Middle Paleocene-Upper Eocene) in the Zagros Basin, Southwest Iran

摘要

The 530 thin sections from the Farashband region were investigated to study the Pabdeh Formation sediments in the Fars region. The 210 meters thick Pabdeh Formation is located in the Farashband fold section. The Pabdeh Formation's geology consists mostly of thin to medium-bedded limestone, argil-lite lime, shale and marl. The Pabdeh Formation's lower boundary is in disconformity with the Gurpi Formation (Campanian-Middle Maastrichtian), while its upper boundary is in conformity with the Asmari Formation (lower oligocene). The 14 speciesbelonging to 31 planktonic and benthic Foraminifera types and 5 planktonic Foraminifera biozones {Mor-zovella unicinata zone-Morzovella velascoensis Zone-Morzovella formosa Morzovella aragoensis Assemblage zone-Morzovella lehneri zone-Tur-borotalia cerroazulensis, Hantkenina Assemblage zone) were obtained in biostratigraphy analysis. The Pabdeh Formation's approximate age is upper Paleocene-Eocene according to identified fossilized content and biozones.