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Zhenzhishan Formation

Zhenzhishan Fm

Period: 
Carboniferous

Age Interval: 
C2 (13a), Late Carboniferous


Province: 
Heilongjiang

Type Locality and Naming

The type section is located at Zhenzhishan, Mishan Mt., Heilongjiang. It was named by Liang Qingchu in 1964.


Lithology and Thickness

Sandstone and Claystone. Lower part consists of pebbly coarse-grained lithic sandstone, medium-grained lithic sandstone, siltstone and clayey slate. Upper part is composed of slate intercalated with thin coal seams, with lithic sandstone being intercalated with gray-black slate in its lower part. Thickness 315.5 m, and over 524 m on the northern hill of Zhenzi Mt.


Lithology Pattern: 
Clayey sandstone


Relationships and Distribution

Lower contact

Conformable contact with the underlying Guangqing Fm

Upper contact

Conformable contact with the overlying Tatouhe Fm at the Erlongshan forest farm

Regional extent


GeoJSON

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Fossils

Lower part contains minor amounts of plants Noeggerathiopsis cf. baschatensis, N. lianzhushanensis, Crassinervia cf. kuznetskiana, Nephropsis cf. integrrima, Sphenopteris sp., Samaropsis sp. and Cardiocarpus sp.


Age 

Inferred to be Late Carboniferous

Age Span: 

    Beginning stage: 
Moscovian

    Fraction up in beginning stage: 
0.55

    Beginning date (Ma): 
310.68

    Ending stage: 
Kasimovian

    Fraction up in the ending stage: 
0.6

    Ending date (Ma):  
305.01

Depositional setting


Depositional pattern:  


Additional Information


Compiler:  

Liu Fa