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Tianeping Formation

Tianeping Fm


Period: 
Carboniferous

Age Interval: 
C11 (57), middle Tournaisian (early Early Carboniferous)


Province: 
Hunan, Guangdong, Guangxi

Type Locality and Naming

The type section lies at Dabeitang, about 2.5 km southwest of Tianeping, Guiyang County, Hunan. It was named by Tang Zhenxiu and Tang Xiaoshan in 1983.

Synonym: Tian'eping Fm; Dashaiba Fm (in Guangdong Prov.)


Lithology and Thickness

Sandy claystone. Composed of shale, sandy shale, marl and siltstone, intercalated with clayey limestone and quartz sandstone. From north to south, sandy components decrease while calcareous components increase. Thickness 30−150 m, stable in lithology.


Lithology Pattern: 
Sandy claystone


Relationships and Distribution

Lower contact

Conformable contact with the underlying Malanbian Fm

Upper contact

Conformable contact with the overlying Doulingao Fm (Douling'ao Fm)

Regional extent

Widely distributed. Besides central and southern Hunan, it extends southward to northern Guangdong as the Dashaiba Fm and to northern Guangxi as the upper member of Yingtang Fm. Generally intercalated with quartz sandstone in central Hunan, and with only clayey sandstone in southern Hunan, or more or less siliceous rocks.


GeoJSON

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Fossils

It contains the upper part of Brachiopod Eochoristites-Martiniella zone and corals Pseudouralinia sp. and Keyserlingophyllum sp.,


Age 

middle Tournaisian (early Early Carboniferous)

Age Span: 

    Beginning stage: 
Tournaisian

    Fraction up in beginning stage: 
0.45

    Beginning date (Ma): 
353.64

    Ending stage: 
Tournaisian

    Fraction up in the ending stage: 
0.85

    Ending date (Ma):  
348.62

Depositional setting

It is interpreted as littoral-neritic deposits


Depositional pattern:  


Additional Information


Compiler:  

Tan Zhenxiu