Jueshangou Fm
Type Locality and Naming
The type section of the Jueshangou section at is Jueshangou in Xiaping Township (114°16’E，26°46’N), and was measured by the Wei and others in 1966. The Jueshangou Formation was named by the Compiling Group for Jiang Regional Stratigraphical Scale (1980). The name is derived from the Jueshangou in Xiaping Township, Jinggangshan Citty, western Jiangxi Province. The name was originally appeared in a 1966 manuscript by Wei Xiuzhe, Xiaochengxie, Chen Shenggao and Yu Tao.
Synonym: (爵山沟组)
Lithology and Thickness
The Jueshangou Formation is an epi-metamorphic clastic sequence, consisting mainly of yellowish green, light grey, fine-grained quartz, epi-metamorphic sandstone, sericitic muddy sandstone, intercalated with slate and silty slate. In the type section, the formation is more than about 559.5 m in thickness with its base unexposed.
Relationships and Distribution
Lower contact
The contact of the Jueshangou Fm with the underlying Shuishi Fm in western Jiangxi Province remains uncertain but is very probably in conformable. In eastern and southeastern Hunan, it overlies conformably on the Xiaozijing Fm.
Upper contact
It is overlain by the conformably Ordovician Duiershi Fm. In eastern and southeastern Hunan, it is overlain by Ordovician Qiaotingzhi Fm.
Regional extent
The Jueshangou Formation is exposed in the Cathaysia Area of South China Region, distributed western Jiangxi Province (Yongxin and Ninggang counties and Jinggangshan City) and the eastern and far southern Hunan Province (Ningyuan, Lanshan and Xinning counties).
GeoJSON
Fossils
No fossil is known from the Jueshangou.
Age
Depositional setting
Additional Information