Shengtang Fm
Type Locality and Naming
The type section is located in the Shengtang area 14 km to the northeast of the Enping County Town, Guangdong Province. It was named by Rao Jiaguang et al., in 1961.
Lithology and Thickness
Sandstone. Composed of interbeds of purple pisolitic ferric-concretion-bearing sandstone, clayey siltstone together with yellowish brown and grey-green feldspar-quartz-sandstone, fine-grained sandstone and siltstone, intercalated occasionally with black shale and carbonaceous shale. Its top part consists of siltstone. Thickness is 140 m.
Relationships and Distribution
Lower contact
Conformable contact with the allite (siltstone?) of the underlying Cuipingshan Fm (Shahu Fm), or in a disconformable contact with the underlying Tongziyan Fm.
Upper contact
Conformable or a disconformable contact with the overlying Daye Gr
Regional extent
Distributed in the Guanghua-Yangchun region, with a thickness of 140-250 m. In the Baisha area of Taishan City, it contains more clayey rocks, and is intercalated with several layers of siltstone, with a thickness of 300 m; while in the vicinity of the Baizushan area its maximum thickness reaches over 500 m; and in the Longyungang area of Yangchun City it contains less sandstone, but more siltstone, with a thickness of 256 m.
GeoJSON
Fossils
Yields Plant fossils (phytolites) represented by Gigantonoclea sp., Lobatannularia ensifolia, etc., as well as a small amount of bivalve fragments.
Age
Depositional setting
It is interpreted as a river-lake facies deposit with a stable lithology.
Additional Information