Shangdaminshan Fm
Type Locality and Naming
The type section is located east of Daminshan Hill, south of Zadunhe River of Mianduhe Town of Da Hinngan Ling, Heilongjiang Province. It was named by Ning Qisen et al. in 1958
Lithology and Thickness
Tuff. The Shangdaminshan Formation is characterized by grayish-green andesite porphyry tuff and tuffaceous sandstone intercalated with thin beds or lenses of purplish-red limestone, and has tuffaceous conglomerate and breccia at the base. In the type area, this formation is more than 199 m.
Relationships and Distribution
Lower contact
In the type area, this formation rests conformably on the Xiadaminshan Fm volcanic ash
Upper contact
In the type area, this formation is overlain by volcanics of unknown age.
Regional extent
GeoJSON
Fossils
The limestone includes ammonoids of the Cheiloceras subpartitum Zone and Platyclymenua walcotti Zone, and corals Nalivkinella daminshanensis.
Age
Depositional setting
Additional Information