Dahu Fm
Type Locality and Naming
The type section is located at Wengtan, Dahu, Lianping, Guangdong. It was named by Xu Souyong et al. in 1979.
Lithology and Thickness
Sandstone. Varicolored sandstone, pebbled sandstone and shale, intercalated with calcareous siltstone, locally with carbonaceous shale and thin beds of marl, reaching 200 m in thickness. It is stable in lithology, but varies slightly in thickness, the maximum reaching 354 m.
Relationships and Distribution
Lower contact
Disconformable contact with the underlying Devonian Shuangtou Group (but Devonian Songyuan Gr is indicated on Hongfei Hou's revised chart for the Guangdong-Fujian border region) in areas east of Longchuan−Zijin; and a conformable or disconformable contact in other areas
Upper contact
Conformable contact with the overlying Zhongxin Fm
Regional extent
GeoJSON
Fossils
Brachiopods Cyrtospirifer sp., Camarotoechia sp. and Squamularia sp.; Plants Lepidodendropsis sp., Sublepidodendron sp. and Archaeocalamites sp. as well as bivalves, gastropods, ostracods, etc.
Age
Depositional setting
It is interpreted as an offshore to fluvial-lacustrine facies.
Additional Information