Conodont biostratigraphy of the Permian- Triassic boundary in the Baghuk mountain section Northwest of Abadeh

The Baghuk mountain section located in 50 km North- East of Abadeh, is studied regarding conodonts for the first time. The Abadeh locality is one of the most important area for analyzing the Permian-Triassic boundary in Iran. considering abundance of Conodonts in this section, Clarkina orientalis, has been identified for termination of Wuchiapingian or Dzhulfian and 7 Conodont biozones 1-Clarkina subcarinata 2-Clarkina changxingensis 3-Clarkina bachmnni 4-Clarkina nodosa 5-Clarkina abadehensis 6-Clarkina yeni 7-Clarkina hauschkei and 3 rock units lacking index fossil for Changhsinghian or Dorashamian and two conodont biozones including 1-Hindeodus parvus-Isarcicella staeschei 2-Isarcicella isarcica for base of Triassic, Griesbachian (Induan). Considering the age range, concluded studying Baghuk section, this region is comparable with some sections in the world such as South china, India, Alps, North Caucasus and regions in Iran such as north west of country, Amol, Shahreza (Shahzadeh Seyed Ali Akbar) and Hambast. Accomplished studies and type of fossils regarding bathymetry and existence of stromatolites structures, shows the shallow depths of the basin at the Permian- Triassic boundary.