滹沱群

五台山早前寒武纪变质岩中的白云母属二八面体的2M型多型变体，其中五台群中的白云母为富含绿鳞石分子的普通白云母，滹沱群为多硅白云母。

The muscovites from Precambrian metamorphic rocks in Wutai Shan belong to the 2M-polytype of dioctahedrom : those from Wutai group are common muscovites rich in celedonite and those from Hutuo group are phengite .

综合分析认为，滹沱群玄武岩可能形成于板内裂谷环境。

The basalts of the Hutuo group might erupt in rift environment .

山西五台山区滹沱群变质玄武岩岩石学、地球化学特征及其成因意义

Petrology , geochemistry and petrogenesis of the metabasalts of the Hutuo Group , Wutai Mountains , Shanxi , China

五台山区滹沱群变质基性熔岩中锆石U&Pb年龄

The zircon U-Pb age of metamorphosed basic volcanic lavas from the Hutuo group in the Wutai Mountain area , Shanxi Province

从地层单元和岩石类型两个方面系统地讨论了滹沱群下部成矿元素的地球化学特征，包括元素的均值、众数值、浓集系数、变异系数以及元素之间的聚类组合特征。

This paper , in the terms of stratigraphic unit and rock association , has discussed the geochemical characteristics of ore-forming elements in the lower part of Hutuo group , including the average value , modal value , enrichment coefficient , variation coefficient , and element-cluster analyses .