Gaopochang Fm
Type Locality and Naming
The type section is located at Shuitangzhai, about 3 km south of Gaopochang of Huaxi District, Guiyang City, Guizhou Province. It was named by Guizhou Team of Regional Geological Survey in 1978 and Quoted formally by Guizhou Bureau of Geology and Mineral Resources in 1978.
Lithology and Thickness
Dolomite. The formation is a set of carbonate rocks subdivided into four lithologic members: clayey dolomite, vuggy dolomite, dolomite and pisolitic limestone members, respectively.
The formation is 479 m in thickness
Relationships and Distribution
Lower contact
Conformably on the underlying thick-bedded quartz sandstone of the Mangshan Gr or Mazongling Fm.
Upper contact
This formation is overlain by grayish-black thin-bedded clayey limestone of Zhewang Fm.
Regional extent
It is restrictedly distributed in Guiyang to Kaili area.
GeoJSON
Fossils
The clayey dolomite of the lower part yields brachiopods Schizophoria excellens, Ambocoelia sinensis.
Age
Depositional setting
It is interpreted as a lagoonal depositional environment.
Additional Information