Wulonggou Fm
Type Locality and Naming
The type section is located at Wulonggou, Golmud City, Qinghai. It was named by the No. 1 Geological Party of Qinghai in 1975.
Lithology and Thickness
Clastics and Limestone. Lower part is of clastic rock. Upper part consists of organic limestone, 320 m thick. At Yunjusayi of Mangnai Town, it has a thickness of 207.9 m
Relationships and Distribution
Lower contact
Disconformable contact onto the underlying gray granodiorite at Yunjusayi of Mangnai Town. Elsewhere, disconformity on upper Devonian Harza Fm.
Upper contact
Conformable contact with the overlying Dagangou Fm at Yunjusayi of Mangnai Town
Regional extent
GeoJSON
Fossils
Yields Tournaisian Brachiopod faunas represented by Fusella taidonensis. At Yunjusayi of Mangnai Town, it contains the Coral Humboldtia-Vesiculophyllum and Brachiopod Marginatia ferglensis-Schuchertella magna assemblages of mid-late Tournaisian
Age
Depositional setting
It is interpreted as a
Additional Information
In Stratigraphy of China ⎯ The Carboniferous (1990), it was considered that the top and bottom of the type section of Wulonggou Fm were incomplete, and besides, there lacked reliable fossil evidence. Therefore this stratum was treated as being the lower part of Dagangou Fm and the name Wulonggou Fm was cancelled. However, the Regional Geology of Qinghai Province (1991) added the discovery of the Yunjusayi section at Mangnai Town, considering that layers 1−8 in the section should be the Wulonggou Fm.