Langdonggou Fm
Period:
Carboniferous
Age Interval:
C2 (13d), Late Carboniferous
Province:
Heilongjiang
Type Locality and Naming
The type section is located at Liangzichuan, Dongning County, Heilongjiang Province. It was named by Zhang Hairi in 1987.
Lithology and Thickness
Claystone and Sandstone. Formed by interbeds of gray-black foliated silty spotted slate, tuffaceous fine-grained sandstone and schist-texture siltstone, in rhythmic occurrence, 587−1339 m.
Lithology Pattern:
Sandy claystone
Relationships and Distribution
Lower contact
Unknown: The bottom boundary is unclear. Next older regional unit is the Tayuan Fm coarse sandstone
Upper contact
Unconformable contact with the Lower Permian Erlongshan Fm
Regional extent
Distributed only around Liangzichuan−Langdonggou of Dongning County.
GeoJSON
null
Fossils
Fossil plant ?Equisetites sp. is found from the Kaihuangdui black siltstone at Langdonggo.
Age
Assigned as Late Carboniferous.
Age Span:
Beginning stage:
Moscovian
Fraction up in beginning stage:
0.5
Beginning date (Ma):
311.09
Ending stage:
Gzhelian
Fraction up in the ending stage:
1.0
Ending date (Ma):
298.89
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Liu Fa