Dapu Fm
Type Locality and Naming
The type section is near Liucheng County Seat (Dapu Town), Guangxi. It was named by Zhang Wenyou in 1941.
Synonym: Laohudong Fm (in Jiangsu Province)
Lithology and Thickness
Dolomite and Limestone. Composed of light-gray and gray-white thick-bedded massive dolomite and dolomitic limestone. In the areas of Nandan, Hechi, Shibie of Yishan County and Liangpu of Laibin County, the rocks are dark in color and intercalated with multiple layers of chert bands and nodules, with clear stratification. In the western and southwestern areas of Guangxi, the lithology is unstable, with limestone or dolomitic limestone interbeds or nodules often found, which sometimes change into limestone and become undistinguishable from the Huanglong Fm. It is 23−804 m thick.
Relationships and Distribution
Lower contact
Conformable contact with the underlying Fuluocheng Fm but locally in disconformable contact
Upper contact
Conformable contact with the overlying Huanglong Fm
Regional extent
GeoJSON
Fossils
Fusulinids Fusulinella, Profusulinella, Eostaffella, etc. and Coral Koninckophyllum.
Age
Depositional setting
It is interpreted as normal littoral-neritic sediments
Additional Information