Zhongxin Fm
Type Locality and Naming
The type section is located at Xinxu of Zhongxin, Lianping County, Guangdong (original data unavailable).. It was named by Nan Yi et al. in 1962.
Lithology and Thickness
Sandstone and Limestone. Lower part consists of limestone intercalated with sandstone and shale, 80 m thick. Middle part is of sandstone intercalated with shale and coal, about 80 m thick. Upper part is dominated by red clastic rock intercalated with limestone and chert, locally intercalated with ferruginous sandstone, 47 m thick. In the area east of Longchuan−Zijin, it is dominated by sandstone intercalated with sandstone-conglomerate and shale, locally with limestone or chert lenses, carbonaceous shale or thin-bedded inferior coal.
Relationships and Distribution
Lower contact
Conformable contact with the underlying Dahu Fm
Upper contact
Conformable contact with the overlying Huanglong Fm
Regional extent
GeoJSON
Fossils
Lower part contains Coral Arachnolasma sp., brachiopod Spirifer sp., Fusulinid Eostaffella sp. Middle part contains Plants Rhodea sp. and Neuropteris sp. Upper part contains Fusulinid Eostaffella, Brachiopod Striatifera as well as foraminifers, etc.
Age
Depositional setting
It is interpreted as littoral-neritic deposits
Additional Information