Home Multi-Country Search About Admin Login
Cenozoic
Cretaceous
Jurassic
Triassic
Permian
Carboniferous
Devonian
Silurian
Ordovician
Cambrian
Neoproterozoic
Mesoproterozoic

Search by
Select Region(s) to search
Hold Ctrl (Windows/Linux) or Command (Mac) to select multiple
Qingshuigou Formation
Click to display on map of the Ancient World at:
Qingshuigou Fm base reconstruction

Qingshuigou Fm

Period: 
Carboniferous

Age Interval: 
C11 (35b), late Tournaisian to early Visean (early Early Carboniferous)


Province: 
Yunnan

Type Locality and Naming

The type section is located at Qingshuigou (gully) on the northeast side of Jinji Village, Banqiao Town, Baoshan County, Yunnan. It was named by Jin Suhua in 1985.


Lithology and Thickness

A suite of carbonate rock formation of the platform margin-slope facies. Lower part is composed of gray and gray-black medium- to thick-bedded bioclastic micrite limestone and thick-bedded nodular calcirudite. Middle part consists of gray-black and black medium- to thick-bedded micrite limestone, pellet micrite limestone, biocalcarenite, etc., commonly with scattered framboidal pyrite. Thickness >290 m.


Lithology Pattern: 
Reef limestone


Relationships and Distribution

Lower contact

Unknown: Its relationship with the underlying stratum is unclear. Regionally, next older unit is Devonian Dazhaimen Fm.

Upper contact

Conformable contact with the overlying Jiangjiawan Fm

Regional extent

Distributed on the northeast side of Baoshan County


GeoJSON

{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[98.7,26.69],[98.95,25.89],[99.47,25.07],[99.54,24.51],[99.02,23.72],[98.87,23.65],[98.76,23.85],[98.64,23.96],[98.82,24.04],[98.94,24.15],[98.81,24.21],[98.62,24.14],[98.33,24.08],[97.97,24.03],[97.82,23.91],[97.74,23.86],[97.66,23.95],[98.63,24.85],[98.7,26.69]]]]}}

Fossils

Lower part yields conodonts Gnathodus pseudosemiglaber, G. semiglaber, G. girtyi and Mestognathus backmanni as well as Ammonoids, corals and foraminifers; Middle part yields conodonts Gnathodus pseudosemiglaber and G. commutatus homopunctatus, coral Pentaphyllum, Ammonoid Girtyoceras as well as foraminifers, etc.


Age 

late Tournaisian to early Visean (early Early Carboniferous)

Age Span: 

    Beginning stage: 
Tournaisian

    Fraction up in beginning stage: 
0.0

    Beginning date (Ma): 
359.30

    Ending stage: 
Visean

    Fraction up in the ending stage: 
0.2

    Ending date (Ma):  
343.45

Depositional setting

It is interpreted as a


Depositional pattern:  


Additional Information


Compiler:  

Wang Xiangdong