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JishanFujian Formation
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JishanFujian Fm base reconstruction

JishanFujian Fm

Period: 
Cretaceous

Age Interval: 
Late Cretaceous, K2js, (37)


Province: 
Fujian

Type Locality and Naming

Western Fujian. The Jishan Formation was erected by Ding Baoliang in 1989. The section for the designation is in Jishan of the Yongan City, Fujian.

Synonym: Jishan Formation (Fujian) (吉山组)


Lithology and Thickness

The Jishan Formation is represented by a set of gray white thick-bedded conglomerate with sandy conglomerate. The formation exceeds 94.0 m in thickness.


Lithology Pattern: 
Conglomerate


Relationships and Distribution

Lower contact

Its base marked by the occurrence of thick-bedded conglomerate is distinguished from sandy shale of the Bantou Fm, showing conformity between the two.

Upper contact

Its top is bounded by the appearance of purple red tuffaceous sandy conglomerate of the Baiyashan Fm, with the contact relationship unknown.

Regional extent

The formation occurs sporadically on the Bantou Formation of west Fujian. It is persistent in lithology and is up to 162 m in thickness at maximum.


GeoJSON

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Fossils

None listed


Age 


Age Span: 

    Beginning stage: 
Barremian

    Fraction up in beginning stage: 
0.8

    Beginning date (Ma): 
122.42

    Ending stage: 
Aptian

    Fraction up in the ending stage: 
0.5

    Ending date (Ma):  
117.30

Depositional setting


Depositional pattern:  


Additional Information


Compiler:  

Wan Xiaoqiao