Gaolishan Fm
Type Locality and Naming
The type section is located at the south slope of Gaoli Mt., northwestern Dongchang Street (Town), Jurong, Jiangsu. It was named by Zhu Sen in 1931.
Lithology and Thickness
Claystone. Dominated by yellow-gray, purple-red and yellow-green shale and mudstone, intercalated with fine-grained quartzose sandstone, quartzose greywacke and minor clayey limestone lenses, locally with carbonaceous shale, coal seams and hematite. Thickness of the formation varies greatly, reaching 101 m at Binhai and Hongse of northern Jiangsu; 30−55 m at the Ningzhen Mts.; 1.5−19 m at places like Hexian, Hanshan, Wuwei, Chaoxian, Huaining and Susong of Anhui; 7−37 m at Liyang and Yixing east of the Maoshan Mts. in southern Jiangsu; 11−45 m at Changxing of northern Zhejiang and at Xuancheng, Ningguo, Jingxian, etc. of southern Anhui.
Relationships and Distribution
Lower contact
Conformable contact with the underlying Jiling Fm (gray-black limestone) or Wanghucun Fm (yellow-brown sandy shale).
Upper contact
Conformable contact with the overlying Hezhou Fm (yellowish brown sand-bearing dolomitic marl). In Suchou, Yixing and Liyang east of the Maoshan Mts., Changxing of Zhejiang, and Xuancheng, Guangde, Ningguo, Taiping, Jingxian and Guguichi of Anhui, the demarcation between its top and the overlying Laohudong Fm is marked by the appearance of gray-white dolomite, on the bottom of which there is usually a layer of basal conglomerate, and the two show an obvious disconformable contact relationship.
Regional extent
GeoJSON
Fossils
At the south slope of Gaoli Mt. of Jurong, this formation yields Plants Sublepidodendron miralile, Eolepidodendron wusihense, Lepidodendron kaolishanense, etc.; at Kongshan Mt. of Jiangning, it yields Brachiopod Pugilis hunanensis, etc.
Age
Depositional setting
It is interpreted as a
Additional Information