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Shaliushui Gr
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Shaliushui Gr base reconstruction

Shaliushui Gr

Period: 
Devonian

Age Interval: 
D3 (19, 20-west), Famennian (latest Devonian)


Province: 
Gansu

Type Locality and Naming

The type section is located at Shaliushui, north of Jinyuan County, Gansu Province. It was named by the No. 603 Team of the Gansu Regional Geological Survey in 1963.


Lithology and Thickness

Sandstone. At the type section, the Shaliushui Group, 600 m thick, consists of purplish-red, grayish-green and grayish-white pebbly sandstone, quartz sandstone and siltstone with a 20-m-thick bed of quartz-rich conglomerate.


Lithology Pattern: 
Coarse-grained sandstone


Relationships and Distribution

Lower contact

In the Hongshiwan of Shajiatang, west of Zhongwei, the Group rests unconformably on the Middle Cambrian Xiangshan Gr. Regionally, the next older unit is the Xueshan Gr

Upper contact

Not given. Next higher unit in this region is the Chengqianggou Fm of early Carboniferous

Regional extent


GeoJSON

{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[96.96,37.85],[96.284,37.61],[98.85,36.828],[100.7,36.47],[105.185,36.98],[104.65,37.47],[96.96,37.85]]]]}}

Fossils

The siltstone of the lower part yields flora Leptophyloeum rhombicum, Sublepidodendron cf. wushiense, Sphenopteris sp. In the Hongshiwan of Shajiatang, west of Zhongwei, the group contains fish fossils Remigolepis zhongningensis, Dipnoi sp. and flora Leptophyloeum rhombicum.


Age 

Famennian (latest Devonian)

Age Span: 

    Beginning stage: 
Frasnian

    Fraction up in beginning stage: 
0.0

    Beginning date (Ma): 
378.90

    Ending stage: 
Famennian

    Fraction up in the ending stage: 
1.0

    Ending date (Ma):  
359.30

Depositional setting


Depositional pattern:  


Additional Information


Compiler:  

(Wang Shitao)