Jijigou Gr
Type Locality and Naming
It was named by Xu Fuxiang and others in 1976. The naming section is located at the Jiji Gully of the Allashan Right Banner, Inner Mongolia Autonomous Region.
Synonym: （芨芨沟群）
Lithology and Thickness
Composed of grey-white gritstone, grey and yellow-brown fine-grained sandstone, siltstone, grey-violet shale, thin-bedded marl, carbonaceous shale and coal seams, with a thickness of 339 m.
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next younger unit as the Qingtujing Gr.
Upper contact
It is unconformably overlying the Archean. Regionally, the schematic strat column indicates the next older unit as Xiangtang Fm
Regional extent
The group is distributed in the tidal basins, including the areas of the Alashan Right Banner of Inner Mongolia, Gaotai and Minqin Counties of Gansu Province.
GeoJSON
Fossils
It yields plant fossils as represented by Neocalamites sp., Coniopteris cf. hymenophylloides, Cladophlebis fantznensis, Todites cf. denticulate, Baiera gracilis and etc.
Age
Depositional setting
Additional Information