Shanheila Fm
Period:
Ordovician
Age Interval:
Early to Middle Ordovician, (32)
Province:
Inner Mongolia
Type Locality and Naming
Type locality at Shanheila close to Dashetai, Wulate Qian Banner, Inner Mongolia Autonomous Region. Named by Lin Baoyu, Qiu Hongrong, Xu Changcheng, 1984, Geological Review, 30(2): 95–105.
Synonym:
Lithology and Thickness
Thick-bedded massive limestone and thin-bedded limestone, with interbeds of sandy limestone and siltstone occasionally.
Lithology Pattern:
Limestone
Relationships and Distribution
Lower contact
Upper contact
Conformably overlain by the Erhagong Fm.
Regional extent
GeoJSON
null
Fossils
Age
?? dotted base as mid-Tremadocian; but may extend into uppermost Cambrian?
Age Span:
Beginning stage:
Tremadocian
Fraction up in beginning stage:
0.5
Beginning date (Ma):
481.96
Ending stage:
Darriwilian
Fraction up in the ending stage:
0.45
Ending date (Ma):
464.36
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Extracted from Geological Formation Names of China (1866-2000); Springer Publ.