内蒙古东升庙地区渣尔泰山群地层学特征及构造意义

Stratigraphy Characteristics and Tectonic Significance of the Chaertaishan Group in Dongshengmiao Area, Inner Mongolia

东升庙地区渣尔泰山群自下而上分为书记沟组与阿古鲁沟组,中间缺失增隆昌组。书记沟组主要由石英岩与云母石英片岩组成;阿古鲁沟组由一套千枚岩、含碳粉砂质板岩及片岩组成。渣尔泰山群总体为结构成熟度较高的碎屑岩-粉砂岩-泥质岩建造的浅海相陆棚相沉积,表明在中元古代研究区构造特征为稳定大陆边缘。

The Chaertaishan Group in Dongshengmiao area is divided into the Shujigou Formation and the Agulugou Formation from bottom to top. The Zenglongchang Formation is missing in the middle. The Shujigou Formation consists mainly of quartzite and mica-quartz schist; the Agulugou Formation consists of a set of phyllite, carbonaceous sandy slate, and schist. The Chaertaishan Group is a paleo-continental continental facies sediment constructed by clastic rock-siltstone-clay rock with a high degree of structural maturity, indicating that the structural features of the study area in the Mesoproterozoic are stable continental margins.