Shangruya Fm
Period:
Carboniferous
Age Interval:
C21 (48, 49), late Early Carboniferous
Province:
Guizhou
Type Locality and Naming
The type section is on the highway from 2 km east of Sanglangniuyan Village to Ruyakou, Wangmo County, Guizhou. It was named by Xiong Jianfei et al. in 1983.
Lithology and Thickness
Limestone. Dark-gray or light-gray moderately thick-bedded sparite bioclastic limestone and calcarenite, occasionally intercalated with chert lamellas and lumps; ~300 m thick.
Lithology Pattern:
Limestone
Relationships and Distribution
Lower contact
Conformable contact with the underlying Xiaruya Fm.
Upper contact
Conformable contact with the overlying light-gray calcarenite and bioclastic limestone (of Xiaolangfengguan Fm?) which yield conodonts Idiognathodus, etc. and fusulinid Pseudostaffella.
Regional extent
Coeval with upper Lingun Fm of more shallow-water facies
GeoJSON
null
Age
late Early Carboniferous
Age Span:
Beginning stage:
Visean
Fraction up in beginning stage:
0.15
Beginning date (Ma):
344.27
Ending stage:
Serpukhovian
Fraction up in the ending stage:
1.0
Ending date (Ma):
323.40
Depositional setting
It is interpreted as a deep-water shelf slope facies
Depositional pattern:
Additional Information
Compiler:
Wang Hongdi