Maoxianling Fm
Type Locality and Naming
It was named by Liu Yuanzhen, Yuan Zaishu as the “Maoxianling Sandstone” in 1951. The naming section is located at Maoxian Ridge in the vicinity of the Sandu Coal Mine of Zixing County, Hunan Province.
Synonym: （茅仙岭组）
Lithology and Thickness
Composed of grey-white medium-, and fine-grained feldspar-quartz sandstones, with its upper and lower parts being intercalated with a small amount of black mudstones, containing inconsistent coal beds, with a thickness of 450-500 m.
Relationships and Distribution
Lower contact
It is in a disconformable contact with the underlying Xintianmen Fm
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Shigu Fm
Regional extent
It is distributed largely in Zixing and Yizhang Counties, as well as in the Nuanshui area of Rucheng County.
GeoJSON
Fossils
In the Sandu area of Zixing County it yields such plant fossils as Equisetum sp., Coniopteris sp., Dictyophyllum nathoristi, Thaumatopteris sp., Phlebopteris sp. and Todites denticulate.
Age
Depositional setting
The formation belongs to fluvial and lacustrine deposits, with some swamp facies deposits being formed locally.
Additional Information