Huangjingshan Fm
Type Locality and Naming
The type section is located at Dafengmeng (110°21’E-22°45’N), 3.5 km north of Beiliu County center, Guangxi Zhuangzu Autonomous Region. It was named by Wang Yu et al. in 1965.
Synonym: Huangjingshan Dolomite
Lithology and Thickness
Dolomite. Lower part, about 270 m thick, is mainly composed of thick-bedded bioclastic dolomite and fine-grained crystalline dolomite, intercalated with stromatopora-bearing or laminated dolomite. Upper part, about 260 m thick, is composed of bioclastic dolomite intercalated with dolomitic limestone and bioclastic limestone.
Relationships and Distribution
Lower contact
This formation is separated by the appearance of dolomite beds at the conformable contact to the underlying Yujiang Fm.
Upper contact
It has an upper conformable contact to the overlying Guitang Fm.
Regional extent
This formation is widely distributed from Beiliu in east Guangxi through Yulin, Lingshan, Binyang, Mashan, Tiandeng, Debao, Jingxi, and Baise in west Guangxi, and further to Funing, Wenshan, Malipo of Yunnan Province. Northwards at west side of Dayaoshan Mt., it was divided into three formations, namely the Shanglun Fm Dolomite below and Guanqiao Fm Dolomite above with Ertang Fm in between.
GeoJSON
Fossils
Some tabulate corals are occasionally found, and ostracoda Belodella has been reported from the upper part.
Age
Depositional setting
It is interpreted as a restricted platform environment.
Additional Information