大青山、大同煤田太原组流纹质沉凝灰岩的发现及地层对比

The Discovery of Rhyo-tuffite in the Taiyuan Formation and Stratigraphic Correlation of the Daqingshan and Datong Coalfields

作者依据镜下岩矿鉴定，首次在大青山煤田和大同煤田太原组中发现一层高岭石化流纹质沉凝灰岩。地球化学分析资料也证明了它的存在。火山灰可能来自大同煤田东北方向。根据火山事件层及植物群特征，作者对两个煤田的太原组进行了对比。

Based on the results of microscope studies of the rock , the authors for the first time discovereda layer of kaolinized rhyo-tuffite in the Taiyuan Forniation of the Daqingshan and Datong coal-fields. Its existence was confirmed by geochemical data . The ash may be from the north east of theDatong coal field. Based on thecharacter of volcanic event bed and flora , the Taiyuan Formation inthe Daqingshan coalfields and Datong coalfields is correlated.