太原东山晚石炭世至早三叠世早期地层研究

通过对太原东山本溪组、太原组发育特征、腕足动物和宝类地层分布的研究，论述了石炭、二叠系间界线位置，认为腕足动物的大繁盛和类Ｃｈａｈａｓｃｈｐｅ的出现与Ｐｓｅｕｄｏｓｃｈｗａｇｅｒｉｎａ的出现近于同时，对没有发现Ｐｓｅｕｄｏｓｃｈｗａｇｅｒｉｎａ的地区，以腕足动物的大繁盛和Ｃｈａｒｏｓｃｈｗａｇｅｒｉｎａ的出现作为二叠纪开始的辅助生物标志是可靠的。太原东山石炭工曾乐界线划于洞道沟灰岩之底，太原组时代属晚石炭世至早二叠世早期。

A RESEARCH INTO THE LATE CARBONIFEROUS TO EARLY PERMIAN IN DONGSHAN, TAIYUAN

he stratum feature and distribution of the Brachiopod. Fusulinidea faunas of the Benxi Formation and the Taiyuan Formation in Dongshan, Taiyuan were reseached. The boundary between the Permian and Carboniferous systems was discussed. Because the flourishing of Brachioghs and the appearance of Chalaroschwagerina are accost the same time of the appearance of Psedoschwagerina, it is believabe that the nourishing of Brachiopods and the appearance of Chalaroschwagerina can be regarded as the begining of Penman when Pseudoschwagerina is absent. Thus the the between the Permian and Carboniferous systems can be drown at the base of the Jiandaogou limestone in Dongshan, that is, the Taiyuan Formation belongs to the late Carboniferous to early Permian in age.