Songmaoshan Fm
Period:
Ordovician
Age Interval:
Late Ordovician, (6)
Province:
Heilongjiang
Type Locality and Naming
Type section at Songmaoshan in Xinglonggou Area, Huma County, Heilongjiang Province. Named by Xie Guisheng, 1983, Explanatory Text for 1∶200 000 Scale Geological Map: Xinglonggou Sheet, Humazhen She.
Synonym:
Lithology and Thickness
Rhythmic beds composed of sandstone, metamorphic sandstone and slate
Lithology Pattern:
Clayey sandstone
Relationships and Distribution
Lower contact
Regionally, the next older unit is the Nanyanghe Fm
Upper contact
Regional extent
GeoJSON
null
Fossils
Age
Age Span:
Beginning stage:
Katian
Fraction up in beginning stage:
0.7
Beginning date (Ma):
447.47
Ending stage:
Rhuddanian
Fraction up in the ending stage:
0.0
Ending date (Ma):
443.07
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Extracted from Geological Formation Names of China (1866-2000); Springer Publ.