Changkengshui Fm
Type Locality and Naming
The type section is at Changkengshui in Qujiang County, northern Guangdong. The Changkengshui Fm was named by Central-South Compiling Group for Regional Stratigraphic Scale (1974).
Synonym: (长坑水组）
Lithology and Thickness
The Changkengshui Fm is composed of black slaty siliceous shale intercalated with carbonaceous shale.
Relationships and Distribution
Lower contact
It rests conformably on the siltstone and chert at the top of the Xiahuangkeng Fm.
Upper contact
Regional extent
In the type area, the Changkengshui Fm is 55 m thick, southward to Taishan, Guangdong, only 3.5 m thick strata are exposed, with most being covered.
GeoJSON
Fossils
This stratigraphic unit includes two graptolite zones, i.e., the G. hincksii zone and N. gracilis zone. At Xinchang in Taishan, only one graptolite zone, H. teretiusculus zone, was established in this formation (Chen et al., 1987).
Age
Depositional setting
Additional Information