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Shiniushan Formation
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Shiniushan Fm base reconstruction

Shiniushan Fm

Period: 
Cretaceous

Age Interval: 
Late Cretaceous, K2sn, (38)


Province: 
Fujian

Type Locality and Naming

Eastern Fujian. The Shiniushan Formation was named by Feng Zongzhi (1991), representing the upper part of the Shimaoshan Group. The type locality is in Shiniushan of Nancheng, the Dehua County. The key section is the Xiangxi-Caixi section of the Xianyou County, Fujian (118º40', 25º33').


Lithology and Thickness

The Shiniushan Formation is dominated by a group of purple red volcanic-sedimentary rocks, and is divided into 2 members. Lower member is composed of purple red tuffaceous sandstone, siltstone, mudstone. Upper member is purple grey rhyolite tuff intercalated with rhyolite and thin-bedded tuffaceous siltstone. It is 1151.5 to 1911.5 m in thickness.


Lithology Pattern: 
Volcanic ash


Relationships and Distribution

Lower contact

The Shiniushan Formation is disconformably on the underlying Zaixia Fm.

Upper contact

Regional extent

It occurs in Dehua, Yongtai and Minhou areas.


GeoJSON

{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[120.03,27.88],[120.33,27.83],[120.77,27.83],[120.81,27.54],[120.69,26.97],[120.33,26.43],[120.02,26.01],[119.8,25.57],[119.56,25.37],[119.23,25.43],[118.98,25.54],[118.94,25.85],[119.12,26.38],[119.36,26.94],[119.76,27.69],[120.03,27.88]]]]}}

Fossils

The sedimentary rocks of this formation contains fossils of plant Manica cf. parceramosa, Frenelopsis sp.; conchostracans Yanjiestheria sp., Orthestheria sp.


Age 


Age Span: 

    Beginning stage: 
Cenomanian

    Fraction up in beginning stage: 
0.0

    Beginning date (Ma): 
100.50

    Ending stage: 
Campanian

    Fraction up in the ending stage: 
0.1

    Ending date (Ma):  
82.50

Depositional setting


Depositional pattern:  


Additional Information


Compiler:  

Wan Xiaoqiao