Xilinkebo Fm
Period:
Ordovician
Age Interval:
Sandbian-Katian, (13)
Province:
Gansu
Type Locality and Naming
Type section at Xilinkebo in Mazongshan Township, Subei County, Gansu Province. Named by Gao Zhenjia, Zhang Tairong, et al., 1966, Geological Science and Technology of Xinjiang, (2).
Synonym:
Lithology and Thickness
Black thin chert, limestone and sandstone. "pebbly sandstone and dacite intercalated with andesitic basalt at the base" according to the entry for the underlying Luoyachushan Fm.
Lithology Pattern:
Siliceous limestone
Relationships and Distribution
Lower contact
Disconformably onto the underlying Luoyachushan Fm
Upper contact
Regional extent
GeoJSON
null
Fossils
Age
Age Span:
Beginning stage:
Sandbian
Fraction up in beginning stage:
0.5
Beginning date (Ma):
455.46
Ending stage:
Katian
Fraction up in the ending stage:
0.6
Ending date (Ma):
448.23
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Extracted from Geological Formation Names of China (1866-2000); Springer Publ.