Yueyahu Fm
Type Locality and Naming
The type section is lies 380 km northeastern of Rutog County, and ~20 km south of Shuangxiandaban, Duoma District, Tibet. It was named by the Regional Geological Survey Party of Tibetan Bureau of Geology in 1987.
Lithology and Thickness
Limestone. Gray and dark-gray thin- to thick-bedded bioclastic limestone, crystalline limestone, compact limestone and clayey limestone interbedded with micritic limestone, locally intercalated with shale. 127.21−1150 m thick
Relationships and Distribution
Lower contact
Conformable contact with the underlying Upper Devonian Lazhulong Fm
Upper contact
Conformable contact with the overlying Shuangxiandaban Fm
Regional extent
Distributed around Shuangxiandaban and Yueyahu of Duoma District, Rutog County.
GeoJSON
Fossils
Yields abundant Brachiopods Tenticospirifer sp., Composita cf. ovata, C. cf. globosa, Schizophoria cf. resupinata, Yanguania sp., Syringothyris altaica, S. cf. texta and Unispirifer sp.; Corals Zaphrentites sp., Zaphrentoides sp. and Caninia sp.,
Age
Depositional setting
It is interpreted as neritic deposits
Additional Information