Yaoshan Fm
Type Locality and Naming
The type section, Jiaoyanshan-Yaoshan section, is located at the Shanglin Township, Linqu County. Geographical coordinates: 36°32′N, 118°43′E (GPS). It was named by the Geological Department Phosphate Team, Shandong, in 1960, and introduced in 1966 by the Petroleum Geology Atlas Editorial Committee, the Ministry of Geology.
Lithology and Thickness
Primarily a set of basic volcanic rocks, sometimes intercalated with glutenite. In Linqu area it is composed of olivine basalt and diabase, and in Qixia and Penglai areas it is composed of olivine basalt.
Relationships and Distribution
Lower contact
It is in unconformity contact with the eruption of the Shanwang Fm, or the Niushan Fm, if Shanwang is absent.
Upper contact
It is unconformably overlain by the Quaternary.
Regional extent
It is distributed in Linqu, Qixia, Penglai, Weifang and the adjacent area.
GeoJSON
Fossils
Age
Depositional setting
Primarily extrusive rock.
Additional Information