Taipingchuan Fm
Type Locality and Naming
It was named by the No. 109 Party under the Coalfields Geological Prospecting Company of Heilongjiang Province in 1972-1973. The naming section represents the Ⅱ-Ⅱ′ geological profile at the Taipingchuan Coal Mine of Buteha Banner, Inner Mongolia. It was first cited publicly by the Compiler
Jingeng Sha (coordinator) Group for the Regional Stratigraphic Chart of Heilongjiang Province in 1979.
Synonym: （太平川组）
Lithology and Thickness
Taipingchuan Fm. represents an alternating layer of grey-black siltstone and mudstone, intercalated with conglomerate and grey-white-grey-black fine-grained sandstone in association with mudstone, intercalated with thin-bedded tuff and mineable coal beds. Its thickness is 450-810 m.
Relationships and Distribution
Lower contact
It is in an unconformable contact with the underlying Proterozoic strata.
Upper contact
It is in a disconformable contact with the overlying Nanping Fm
Regional extent
The formation is distributed essentially in the Taipingchuan River of the Buteha Banner⎯Huifengchuan River area on the eastern slope of the Greater Khingan Mts, with its exposures being found in the Erdaoguanmen Mts, Xinlin and Baoligenhua areas of the Zhamete Banner; Yanjia Gully, Xinlong Township, Shanquan Spring-Jixin River of Longjiang County, with less variations in its lithology.
GeoJSON
Fossils
It yields plant fossils such as Coniopteris cf. burejensis, Cladophlebis cf. argututa, Czekanowskia rigida, Phoenicopsis angustifolia, Podozamites lancealatus and Raphaelia diamensis.
Age
Depositional setting
It is interpreted as terrestrial environment.
Additional Information
Age:
Schematic strat column suggests Aalenian-Bajocian
Age span:
Beginning stage: Aalenian
Fraction up in beginning stage: 0.0
Beginning date (Ma):
Ending stage: Bajocian
Fraction up in ending stage: 1.0
Ending date (Ma):
Depositional setting:
It is interpreted as terrestrial environment.
Depositional-pattern:
Additional Information
Compiler
Jingeng Sha (coordinator)