Dingpo Fm
Type Locality and Naming
The type section is located at the Zhongzan Cattle Farm about 90 km southeast of Batang County, Sichuan, between Baxiangling Village and Dingpo Village. It was named by the No. 3 Sichuan Party of Regional Geological Survey in 1972.
Lithology and Thickness
Limestone. Light-gray to gray-white massive micritic limestones, containing a large amount of ooids in the bottom limestone, and minor amounts of ooids in the middle and upper parts, also with black irregular patches or streaks. Thickness 178.5 m.
Relationships and Distribution
Lower contact
Conformable contact with the underlying Zhapu Fm
Upper contact
Conformable contact with the overlying mid-Permian strata (Ranlang Fm)
Regional extent
Mainly distributed in Zhongzan of Batang and Ricuo of Reda District, Xiangcheng County, extending southward to Zhongdian, Yunnan
GeoJSON
Fossils
The Lower part contains Fusulinids Triticites subrhomboides, T. dictyopharus, T. cf. parvulus, Rugosofusulina sp. and minor Corals Pseudocariaphyllum sp. and Protowentzelella sp. The Middle and Upper parts yield Fusulinids Pseudoschwagerina zhongzanica, Pseudofusulina cf. paragregaria, Zellia heritschi, etc.
Age
Depositional setting
It is interpreted as normal littoral sediments
Additional Information