Sarezheyi Fm
(24), Kungurian Stage (late-Cisuralian Epoch; late-Early Permian)
Type Locality and Naming
The type section is located in the Kalagayi-Zhileja Gorges of the Kunkelaqitag to the southwest of the Arharqi County, Xinjiang. It was named by the Xinjiang Geological Research Institute in 1981, and was cited officially by Wu Shaozu and Zhang Zhimin in 1985.
Lithology and Thickness
Clastics and Limestone. Composed of grey and grey-brown calcareous fine-grained sandstone and calcareous siltstone, intercalated with algal limestone, micrite, micritic calcirudite and brecciated limestone. Its base consisting of clastic rocks. Thickness is 499.7 m.
Relationships and Distribution
Lower contact
Conformable contact with the reef-limestone of the underlying Kunkelaqi Fm.
Upper contact
Middle through upper Permian (etc) not present
Regional extent
Distributed in the Kunkelaqitag area.
GeoJSON
Fossils
Fusulinida represented by Schwagerina chihsiaensis brevis, S.chihsiaensis, S. tschernyschewi, S. declinata, Schubertella paramelonica minor and Pseudofusulina crassipira; in addition, there occur Foraminifera and Brachiopoda fossils.
Age
Depositional setting
It is interpreted as a suite of gulf-facies strata that were formed in an intertidal- or subtidal-zone shallow-water environment.
Additional Information