The Permian-Triassic boundary and the Early Triassic in Transcaucasian and Central Iranian pelagic sections

伊朗西北部（朱尔法附近）和中部（阿巴代附近）的二叠纪-三叠纪（P-Tr）界线层的出露属于典型的露头，在这些露头中，可以就地球历史上最严重的大规模灭绝事件对远洋沉积物进行研究。这两个地区都显示出二叠纪和三叠纪远洋石灰岩的连续演替，只是被边界粘土中断，灭绝层在底部。同时调查的化石含量（特别是头足类和牙形石），以及地球化学（三角洲13 Ccarb，三角洲13 Corg，三角洲18 O，和三角洲15 N）和碳酸盐微相表明，这些部分承担了潜在的深入了解在从古生代到中生代之交的杀死机制。迄今为止，在Baghuk山脉（伊朗中部）发现的未描述的，非常丰富的P-Tr剖面允许与Julfa剖面进行详细的对比，并补充了在这一领域取得的成果。

The exposures of Permian-Triassic (P-Tr) boundary beds in North-western (vicinity of Julfa) and Central Iran (vicinity of Abadeh) belong to the classic outcrops in which pelagic sediments can be studied with respect to the most severe mass extinction event in Earth History. Both regions show continuous successions of Permian and Triassic pelagic limestone, only interrupted by the boundary clay with the extinction horizon at the base. The simultaneous investigation of the fossil content (particularly of cephalopods and conodonts) as well as geochemistry (delta13Ccarb, delta13Corg, delta18O, and delta15N) and carbonate microfacies shows that these sections bear the potential for a deep insight in the kill mechanisms at the turn from the Palaeozoic into the Mesozoic. The discovery of hitherto undescribed, very fossiliferous P-Tr sections in the Baghuk Mountains (Central Iran) allow a detailed correlation with the sections of Julfa and complement the results gained in this area.