Huangjin Fm
Type Locality and Naming
The type section is located at Huangjinyu, Luocheng County, Guangxi. It was named by Zhao Jinke and Zhang Wenyou in 1952.
Lithology and Thickness
Limestone. Composed of dark-gray limestone intercalated with dolomite, carbonaceous limestone and micro-grained limestone, containing clayey material and chert, locally with sandstone and shale. The thickness varies greatly, being 290−399 m at Luocheng, and ~850 m around Taiping of Liucheng County. From west to east, brecciated limestones are decreasing remarkably and the strata are getting thinner.
Relationships and Distribution
Lower contact
Conformable contact with the underlying Shizixu Fm
Upper contact
Conformable contact with the overlying Simen Fm
Regional extent
GeoJSON
Fossils
Corals Arachnolasma, Kueichouphyllum, Heterocaninia, Clisiophyllum, Dibunophyllum, Neoclisiophyllum, Donophyllum and Lithostrotion; Brachiopods Punctospirifer, Linoproductus, Gigantoproductus, Chonetes, Avonia, Eochoristites, Neospirifer, Pugilis, etc. as well as crinoid stems, gastropods, ostracods, Ammonoids and plant fragments.
Age
Depositional setting
It is interpreted as littoral-neritic deposits
Additional Information