Wutongwozi Fm
Type Locality and Naming
The type section lies south of Wutongwozi, Hami City, Xinjiang. It was named by Gao Zhenjia et al. in 1958.
Lithology and Thickness
Volcanics and Volcaniclastics. Dominated by neritic low-grade metamorphosed basic lava, followed by intermediate and acid lava, tuff and tuffaceous clastic rock. South of Wutongwozi, it is dominated by gray-green to green spilite-porphyrite and diabase-porphyrite, and secondarily by very fine-grained acidic volcanic rocks, quartz-rich albite porphyry volcanics, jasper and minor andesitic porphyrite, intermediate tuff, tuff conglomerate and tuffaceous breccia. Exposed thickness 7110 m (!). From east to west, thickness varying from 1061 to 8812 m, basic volcanic lava decreasing while bioclastic and normal clastic rock increasing, and containing fewer fossils
Relationships and Distribution
Lower contact
Conformable contact with the underlying Gandun Fm
Upper contact
Unknown: The overlying stratum is unseen. Next younger unit is the Yabei Fm.
Regional extent
Distributed on the north slope of eastern Qoltag, extending in the same direction as that of the Gandun Fm: nearly E-W in the western part and turning into ENE in the eastern part
GeoJSON
Fossils
Age
Depositional setting
Additional Information