Qilikashan Fm
Period:
Devonian
Age Interval:
D32 (8),
Province:
Heilongjiang
Type Locality and Naming
The type section is located at Qilikashan Hill, about 50 km northwestern Mishan County of Heilongjiang Province. It was named by Qu Guansen and others in 1984 and was published by Guo Shengzhe et al. in 1992.
Lithology and Thickness
Tuffaceous sandstone. In the type locality, the formation is 102.8 m thick, and is composed of a series of purple to grayish-purple tuffaceous fine-grained sandstone, siltstone and slate intercalated with acidic, medium-acidic tuff and tuffaceous lava.
Lithology Pattern:
Volcanic_ash
Relationships and Distribution
Lower contact
It rests conformably on the Laotudingzi Fm.
Upper contact
It is overlain by the Beixing Fm of Lower Carboniferous.
Regional extent
GeoJSON
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Fossils
The fossils in the siltstone are Aphyllopteris sp., Psilophyton sp., and Hostimella sp.
Age
Age Span:
S
Beginning stage:
Famennian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
371.10
Ending stage:
Famennian
Fraction up in the ending stage:
1.0
Ending date (Ma):
359.30
Depositional setting
Depositional pattern:
Additional Information
Compiler:
(Su Yangzen)