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
Bingma Formation

Bingma Fm

Period: 
Permian

Age Interval: 
P (45), Kungurian Stage (late Cisuralian Epoch) through Guadalupian Epoch [latest-Early through Middle Permian]


Province: 
Yunnan

Type Locality and Naming

The typical profile is the measured profile of the Lower Permian in Hewan Street, Baoshan County, Yunnan (E99°18′00″; N25°09′00″), Yunnan Regional Geological Survey Brigade, surveyed in 1980.

Synonym: Manli Fm (曼里组), Yongde Fm (永德组)


Lithology and Thickness

It is composed of purple silty claystone, gray silty shale and tuff, tuffaceous sand and shale interbedded, and the bottom is clastic rock of iron-bearing tuffaceous sandstone. Contains corals, brachiopods, bryozoans, bivalves, etc. Thickness: 52-135 meters.


Lithology Pattern: 
Siltstone


Relationships and Distribution

Lower contact

Disconformable or an unconformable contact with the underlying Woniusi Fm

Upper contact

Conformable contact with the overlying Shazipo Fm

Regional extent

Baoshan, SW Yunnan


GeoJSON

null

Fossils


Age 

Yangsingian Epoch = Kungurian Stage (late Cisuralian Epoch) through Guadalupian Epoch [latest-Early through Middle Permian]; Roadian-Wordian (inferred from Wang et al., 2018)

Age Span: 

    Beginning stage: 
Roadian

    Fraction up in beginning stage: 
0

    Beginning date (Ma): 
274.37

    Ending stage: 
Wordian

    Fraction up in the ending stage: 
0

    Ending date (Ma):  
269.21

Depositional setting

It is interpreted as littoral shallow-sea deposits.


Depositional pattern:  


Additional Information


Compiler:  

Wang Yujiang, Wen Du – 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)