| 초록 | The Early Permian Bamchi Formation is distributed in Yobong-Bamchi area in Bookmyeon, Yeongweolgun, Kangweondo with N-S trending. In this formation many limestone beds are intercalated. These limestone beds contain abundant fossils such as conodonts, fusulinids, small foraminifers, ostracods, corals, and brachiopods. This paper carries out a systematic and paleontological study on conodonts of the Bamchi Formation. The conodonts of the formation are four genera, distributed into eight species: Streptognathodus elegantulus, S. elongatus, S. barskovi, S. wabaunsensis, ldiognathodus cllisoni, Diplognathodus expansus, D. triangularis, and Hindeodus minutus. Based on this conodont fauna, the Streptognathodus elongatus Zone was established. This conodont biozone indicates that the geologic age of the Bamchi Formation is the Asselian to Sakmarian stage of the Early Permian Period. The limestone beds of the Bamchi Formation contains some conodonts which indicate the depositional condition was shallow and high energy environment. Therefore, it can be said that the sediments of the Bamchi Formation deposited in shallow marine environment. |
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