Pinghuli Fm
Type Locality and Naming
The naming section is located at Pinghuli and Yuxiantang, Xincheng Township, ~30 km northeast of Dayu County, Jiangxi. Named by Zheng Jiajian et al. in 1973.
Synonym: Pinghu Fm – BUT In order to avoid the identity of the spellings of phonetic characters and the English spellings of this Pinghu Formation and the Pinghu Fm of East China Sea, this formation is now renamed the Pinghuli Formation.
Lithology and Thickness
Mainly purplish red or brownish red mudstone and sandy mudstone with variegated (grayish green, bluish grey, grayish black, yellowish brown, black etc.) mudstone and sandstone, the lower part of which contains sandy conglomerate, abundant iron, manganese and calcareous concretions or nodules. The thickness is 250 to 570 m.
Relationships and Distribution
Lower contact
It has a conformable contact with the underlying Paleocene Chijiang Fm.
Upper contact
Unconformable contact with the overlying Quaternary.
Regional extent
The formation is distributed in the vicinity of Xincheng Township in the eastern part of the Chijiang basin. According to the data, a similar horizon is possibly exposed at Jiudu, Xiniu etc., Xinfeng County, southern Jiangxi.
GeoJSON
Fossils
The formation yields mammals, ostracods, charophytes and sporopollen. The mammals found in this horizon are only two species of Dinocerata, Prodinoceras lacustris and Ganatherium australis. The associated ostracods are Sinocypris, Cypris, Cyprinotus and Cyprois. The charophytes are presented by the Gyrogona qianjiangensis-Grambastichara subcylindrica assemblage. The sporopollen assemblage is dominated by Tripororicellaesporites, Ulmipollenites, Rhiopites and pollen of Sapindaceae, while old elements such as Aquilapollenites only appear sporadically. Pollen of general angiosperms accounts for 12% and spores of pteridophytes 12%.
Age
Depositional setting
It is fluvio-lacustrine deposits.
Additional Information