Liangzichuan Fm
Type Locality and Naming
The type section is located at Liangzuchuan, Dashuihe Region, Dongning County, Heilongjiang Province. It was named by the Jilin Provincial Regional Reconnaissance Party in 1981.
Lithology and Thickness
Clastics. Its Basal part is composed of tuffaceous conglomerate; Lower part is composed of carbonaceous sandstone, yielding abundant animal fossils; Middle part is composed of rutile- and cordierite-hornblende siltstone, intercalated with metamorphosed medium-grained sandstone; Upper part is composed of metamorphosed medium-, and fine-grained sandstones, intercalated with rutile and cordierite-hornblende siltstone. Thickness is about 1150 m.
Relationships and Distribution
Lower contact
Uncertain contact on underlying strata
Upper contact
Unconformable contact with the overlying basalt
Regional extent
Distributed in the Liangzichuan and Hongyeqiao areas of Dashuihe Region, Dongning County, Heilongjiang Province.
GeoJSON
Fossils
Brachiopods such as Anidanthus cf. aagardi, Muirwoodia sp., Chonetes cf. schlagintweiti, Attenuatella paraincurvata, Orthotichia cf. Schlagintweiti, Alttenuatella paraincurvata and Orthotichia cf. Janiceps, as well as Bivalves such as Pseudomonotis qinlongensis.
Age
Depositional setting
It is interpreted as a shallow-sea-facies clastic rock formation.
Additional Information