Zhuomubasitao Fm
Type Locality and Naming
Eastern Junggar. The type section is located at north of Zhifang and 1.8 km southeast of Keankuduk in the East Junggar Basin of Xinjiang Uygur Autonomous Region.
It was named by Li Tiande and others in 1977, and published by Hou Hongfei and others in 1979.
Lithology and Thickness
Sandy limestone. The formation, 78 m thick, is composed of grayish-yellow and gray medium- to thick-bedded alternations of sandy limestone and calcareous sandstone. The sandy limestone changes to lenses of limestone along strike.
At the 1.4 km south of Ulusubasite, the base of the Formation has a 1-m-thick conglomerate bed in which the pebbles are composed of dacite porphyry, quartz porphyry and andesite with various sizes and shapes.
Relationships and Distribution
Lower contact
An unconformable basal contact with the underlying Teheierbasitao Fm can be seen at 800 m northeast of Kokesairgai Peak.
Upper contact
Conformably underlies Ulusubasitao Fm (according to entry for that formation).
Regional extent
At the 1.4 km south of Ulusubasite, the base of the Formation has a 1-m-thick conglomerate bed in which the pebbles are composed of dacite porphyry, quartz porphyry and andesite with various sizes and shapes.
GeoJSON
Fossils
It contains abundant brachiopoda "Paraspirifer” spp., Rhytistrophia beckii, Leptaenopyxis bouei, Megakozlowskiella sp.; and
coral Syringaxon sp., Thamnopora sp.
Age
Depositional setting
Additional Information