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Fenghuangtai Formation
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Fenghuangtai Fm base reconstruction

Fenghuangtai Fm

Period: 
Cretaceous

Age Interval: 
Early Cretaceous, (29a)


Province: 
Anhui

Type Locality and Naming

Heifei Basin, south zone. Fenghuangtai in Lu’an City, Anhui Province. Anhui Regional Geological Survey Team, 1974, Explanatory Text for 1:200 000 Scale Geological Map: Lu'an Sheet. First appeared in a 1959 manuscript "Preliminary Knowledge of Mesozoic Stratigraphy in Hefei Depression" by Yang Zhijian.


Lithology and Thickness

Purplish-red thick-bedded conglomerates interbedded with lenticular sandstones. More than 1800 m thick.


Lithology Pattern: 
Conglomerate


Relationships and Distribution

Lower contact

Next older unit was indicated as Jurassic sandstones of the Sanjianpu Fm (not in Lexicon or China Strat-names book). Regional stratigraphic column shows the next older unit (below a hiatus spanning Late Jurassic?) is siltstone of the Zhongonshan Fm.

Upper contact

Next younger unit is the volcanics of the Maotangchang Fm

Regional extent


GeoJSON

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Fossils


Age 


Age Span: 

    Beginning stage: 
Berriasian

    Fraction up in beginning stage: 
0.4

    Beginning date (Ma): 
140.94

    Ending stage: 
Berriasian

    Fraction up in the ending stage: 
1.0

    Ending date (Ma):  
137.70

Depositional setting

Typical alluvial fan characteristics characterized by debris flows.


Depositional pattern:  


Additional Information


Compiler:  

Xi, D.P., Wan, X.Q, Li, G.B., Li, G. 2019. Cretaceous integrative stratigraphy and timescale of China. Science China Earth Sciences, 61, https://doi.org/10.1007/s11430-017-9262-y