Xiaomiao Gr
Type Locality and Naming
East-central Qinghai. The Xiaomiao Gr was named by Zhuang Qingxing et al. in 1986. The type section is situated at Xiaomiao in middle reaches of Nomhon River, Dulan County, Qinghai Province.
Synonym: （小庙群）
Lithology and Thickness
The Xiaomiao Gr is characterized by quartzite. It is composed of quartzite, mica quartz schist, metamorphosed feldspar quartzite, accompanied with biotite plagioclase gneiss and marble. This stratigraphic horizon of quartzite of the group is rather stable and serves as key bed for regional stratigraphic correlation. It is 700 m thick in the reference section.
Relationships and Distribution
Lower contact
The basal contact relation with the underlying Jinshuikou Gr is unknown.
Upper contact
It is in unconformable contact with Qiujidonggou Gr
Regional extent
East-central Qinghai. The group is sporadically distributed along the south margin of Qaidam Basin. It is rather stable in lithological character, but variable in thickness, for example, it is over 2300 m in Kaimuqi, but is thinned to less than 2000 m upstream of Baisha River, and only 600 m in Shan, Yuyao and Shangyu counties mountain south of Nomhon.
GeoJSON
Fossils
Age
Depositional setting
Additional Information