Guangqing Fm
Type Locality and Naming
The type section is located at Miaoshan, Mishan County, Heilongjiang. It was named by Qu Guansheng et al. in 1981.
Lithology and Thickness
A suite of clastic rock and volcanic tuff units. Lower part consists of conglomerate, sandy conglomerate and lithic sandstone. Middle part, acid and intermediate tuffs interbedded with tuffaceous slate, silty slate and lithic feldspar-rich sandstone. Upper part is dominated by tuffaceous slate, interbedded with lithic sandstone and lithic feldspar-rich sandstone, and intercalated with tuffs. The formation is 839.3 m thick.
Relationships and Distribution
Lower contact
Uncertain: The bottom boundary is unclear. Next older regional unit is early-Carboniferous Kunaerhe Fm.
Upper contact
Conformable contact with the overlying Zhenzishan Fm
Regional extent
Distributed in Zhenzi, Laohei and Qiliga mountains of Mishan County and Lanhuadingzi, Qinglongshan, etc., of Baoqing County
GeoJSON
Fossils
Lower part contains Plants Angaridium sp. and Nephropsis sp
Age
Depositional setting
It is interpreted as possibly belonging to intermontane depression or fluvial deposits
Additional Information