Saarming Fm
Type Locality and Naming
Eastern South Tianshan. The type section is located at the Sa'arming Hill, Hejing County of Xinjiangm, and the reference section is at the west of Daxifeng Peak, south of Sairuimu River, Hejing County of Xinjiang.
It was named by Xinjiang Regional Geological Survey in 1960, and published by Northwest China Regional Stratigraphical Scale (Xinjiang Volume) in 1981.
Synonym: Sa'arming Fm
Lithology and Thickness
Dolomitic limestone. At the reference section, the Sa’arming Formation consists of gray to grayish-white medium- to thick-bedded dolomitic limestone with detritus limestone, and is 2533 m in thickness.
At Paersabulak, east of Bostan Lake, the Sa’arming Formation is characterized by thick-bedded limestone intercalated with thin-bedded clayey limestone and breccia limestone, and is more than 250 m in thickness.
Eastward to Kelakeziler Hill, the Formation is dominated by metamorphosed rocks, volcanic clastics and limestone, and is 439 m in thickness.
Relationships and Distribution
Lower contact
It rests conformably on the Alatag Fm.
Upper contact
Overlain by Hazirblak Fm (Sa'arming Mt, column 13) or by Pochenzi Fm volcanics (Keziletag, column 77).
Regional extent
GeoJSON
Fossils
Some fossils of Stringocephalus sp., Temnophyllum sp., Pseudomicroplasma sp. Thamnopora sp. and stromatoporoids have been found in the limestone and dolomitic limestone of southeast Bayingbuluk, and Stringocephalus sp., Atrypa sp., Favosites sp., Neospongophyllum sp., Disphyllum sp. were found in the upper reaches of Chahanwusu River.
At Paersabulak, east of Bostan Lake, the Sa’arming Formation contains Temnophyllum sp., Grypophyllum sp., Thamnophyllum sp. and Atrypa sp.
Eastward to Kelakeziler Hill, it yields Heliolites sp., Favosites sp., Cyathophyllum sp., Cladophyllum sp.
Age
Depositional setting
Additional Information
The relationship between these sections is still unclear.