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Shazipo Formation
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Shazipo Fm base reconstruction

Shazipo Fm

Period: 
Permian

Age Interval: 
P (45), Capitanian Stage (late Guadalupian Epoch; late Middle Permian)


Province: 
Yunnan

Type Locality and Naming

The type section is located at Longkan 10 km to the southwest of the Luxi County Town, Yunnan Province. It was named by the 1st Regional Geological Reconnaissance Party of Yunnan Province in 1966.

Synonym: Da'aozi Fm, Daaozi Fm. Da’aozi Formation was named in 1981 by “ The third team of Yunnan Regional Geological Survey Brigade”. It names the same strata as the Shazipo Fm. Not used anymore. Source: Dictionary of Chinese Lithostratigraphic Names


Lithology and Thickness

Composed of light-grey massive limestone, dolomitic limestone, dolomite and sandy marl. Thickness is 1097 m.


Lithology Pattern: 
Limestone


Relationships and Distribution

Lower contact

Conformable contact with the underlying Yongde Fm, but locally is in a disconformable contact with the Woniusi Fm

Upper contact

Disconformable contact with the overlying Mengga Fm of the Jurassic Period

Regional extent

Distributed in the Gengma, Luxi, Yongde of Baoshan City and Tengchong of Zhenkang areas. The thickness of the formation is getting smaller and smaller from south to north. For instance, in the Hewanwan Street of Baoshan City its thickness is of 30 m, where there occurs clayey limestone; up to the Jinji Region of Baoshan City its thickness is of 57 m, where the upper part of the formation is composed of dolomite; in the Yongde and Gengma areas the thickness of the formation is of 666-856 m, where it is intercalated with sandy siltstone; and in the Luxi area the thickness of the formation is over a thousand meters.


GeoJSON

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Fossils

Yields abundant Brachiopods represented by Cryptospirifer, Costiferina, Dictyoclostus, Orthotichia, Spirigerella; Corals represented by Ipciphyllum, Waagenophyllum; Fusulinida represented by Eopolydiexodina, Neoschwagerina, Verbeekina, Rugososchwagerina, Nankinella, Schwagerina and Yangchienia; and non-fusulinid Foraminifera such as Shanita, Hemigordius, etc.,


Age 

Late stage of the Middle Permian Epoch = Capitanian? (late Guadalupian Epoch; late Middle Permian); Late stage of the Middle Permian Epoch through Later Permian Epoch (Wang et al., 2018). Span of Wordian through lower half of Capitanian according to Shuzhong Shen et al. (2019; China Integrated Strat.)

Age Span: 

    Beginning stage: 
Wordian

    Fraction up in beginning stage: 
0.0

    Beginning date (Ma): 
269.21

    Ending stage: 
Capitanian

    Fraction up in the ending stage: 
0.5

    Ending date (Ma):  
261.94

Depositional setting

It is interpreted as a shallow-sea carbonate-facies.


Depositional pattern:  


Additional Information


Compiler:  

Wang Yujing, with additions by Wen Du as modified from Wang X.W. et al., 2018. Stratigraphic Division and Correlation of The Carboniferous and Permian in Yunnan Province. Journal of Stratigraphy, 42(4): 461-467 (in Chinese with English abstract)