Tayuan Fm
Period:
Carboniferous
Age Interval:
C2 (13d), Late Carboniferous
Province:
Heilongjiang
Type Locality and Naming
The type section lies at the southwest of Tayuan, Tahe County, Heilongjiang. It was named by Li Qishan et al. in 1985, and formally cited in the Regional Geology of Heilongjiang Province in 1989.
Lithology and Thickness
Conglomerate to Siltstone. Composed of variegated sandy conglomerate, pebbly grit, metamorphic fine-grained sandstone, silty sericite slate, etc.; thickness >358.9 m.
Lithology Pattern:
Coarse-grained sandstone
Relationships and Distribution
Lower contact
Unconformable contact with the underlying Jiaobuleshihe Fm
Upper contact
Unknown; The top is unclear. Next higher regional unit is the Langdonggou Fm claystone
Regional extent
Found only in Tahe County
GeoJSON
null
Fossils
Plants Angaropteridium sp. and Noeggerathiopsis sp. are collected from west side of the type section
Age
Late Carboniferous
Age Span:
Beginning stage:
Bashkirian
Fraction up in beginning stage:
0.25
Beginning date (Ma):
321.34
Ending stage:
Moscovian
Fraction up in the ending stage:
0.5
Ending date (Ma):
311.09
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Liu Fa