Mingshan Fm
(86), Guadalupian Epoch (Middle Permian)
Type Locality and Naming
The type section is located at the Mingshan Mt. 7 km to the southwest of the Leping County Town, Jiangxi Province. The reference section is situated at the Jialuwu of Leping City. It was named by Liu Jichen in 1926.
Synonym: Shizixing Fm is indicated on Lexicon chart in parentheses below the Mingshan Fm name.
Lithology and Thickness
Chert and Claystone. Dark-grey and black siliceous rocks and siliceous shale, intercalated with a small amount of micrite and calcareous shale. Thickness is 46 m.
Relationships and Distribution
Lower contact
Conformable contact with the limestone of the underlying Qixia Fm or with the thin-bedded limestone intercalated with calcareous shale of the Xiaojingbian Fm.
Upper contact
Conformable or disconformable contact with the calcareous siltstone of the Guanshan Member of the overlying Leping Fm.
Regional extent
The formation is lithologically stable and is distributed in the areas of Yichun, Leping, Anfu and Raonan, Jiangxi Province, with a thickness of 10-92 m.
GeoJSON
Fossils
In the area of Jiangxi Province, the fossils comprise Fusulinida represented by Neoschwagerina and Verbeekina, etc.; Corals such as Plicatifera minor, etc.,
Age
Depositional setting
It is interpreted as inland intermarine-platform basin deposits.
Additional Information