Lagude Fm
Type Locality and Naming
The type section is located at Village Lagude, about 10 km north of Lude in Yongsheng County, Yunnan.
It was named by the Stratigraphy and Paleontology group of Laboratory of Yunnan Bureau of Geology in 1973, and was published by Yunnan Compiling Group for Regional Stratigraphical Scale in 1978.
Lithology and Thickness
Limestone. It is a set of carbonate rocks that can be divided into two members. Lower part, the Damaidi Member, is composed of dark-gray bioclastic limestone. It is 328.1 m in thickness.
Upper part, the Suoshabo Member, consists of gray thin- to medium-bedded limestone and dolomitic limestone. It is 427.7 m in thickness.
Relationships and Distribution
Lower contact
Conformable lower contact to the underlying quartz sandstone and grayish-black shale interbeds of Dacaozi Fm.
Upper contact
Overlain by the light-gray to grayish-white medium-bedded limestone of Maoniuping Fm.
Regional extent
GeoJSON
Age
Depositional setting
The sedimentary environments of theses two members may be reef and lagoon facies, respectively.
Additional Information
A similar deposit distributed in Ninglang, Huaping and Yongsheng is called the Tanshanping Fm (Yunnan Bureau of Geology and Mineral Resources, 1990).