Sashuiyan Fm
Type Locality and Naming
It was named by Jin Chuntai et al in 1989. The type section is at the roadside from Longdanxi to Maliuqiao in eastern part of the Erlangshan Mts. area in western Sichuan Province.
Synonym: (洒水岩组) , Shashuiyan Fm, Sashuiya Fm
Lithology and Thickness
The formation, 177 m thick, is dominated by gray, dark gray lenticular thick-bedded marl, limestone, gray green silty mudstone and thick-bedded bioclastic limestone.
Relationships and Distribution
Lower contact
It overlies the Yanziping Fm, or is in a parallel unconformity with the underlying Baohuoyan Fm.
Upper contact
It is conformably overlain by the Maliuqiao Fm.
Regional extent
The formation is steady in lithology, but its thickness varies considerably, merely 37 m thick at Liangluxiang in Tianquan County, northeast of the type section locality.
GeoJSON
Fossils
It yields fossils including brachiopods Retziella, Protathyris, Nikiforovaena, Spirinella, Eoschizophoria, etc. and conodont Ozarkodina crispa.
Age
Depositional setting
Additional Information