Wangchika Fm
Type Locality and Naming
Yunnan District Investigation Team (1983) named it after the typical section in Wangqika village, 2 km north of Zhongdian County (now called "Shangri-La" County), Yunnan Province.
Synonym:
Lithology and Thickness
Mudstone and argillaceous limestone, mainly divided into three parts: Lower part is yellow-green mudstone with argillaceous limestone, with 181 m thick. Middle part is mainly argillaceous limestone or nodular argillaceous limestone and mudstone interbedded, with 354 m thick. Upper part is mainly lithic sandstone with mudstone, with thickness of 276 m.
Relationships and Distribution
Lower contact
It is in disconformable contact with the underlying Jiedi Fm
Upper contact
It is in disconformable contact with the overlying Hagong Fm
Regional extent
GeoJSON
Fossils
Mainly bivalves, with Halobia pluriradiata, brachiopods and gastropods in the lower part; Costatoria inaequicostata, C. goldfussi, Unionites sp. etc. in the middle part; Halobia superba and Costatoria goldfussi in the upper part.
Age
Depositional setting
Low-energy static water environment sedimentation under the restricted platform facies
Additional Information