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
Dongpo Formation
Click to display on map of the Ancient World at:
Dongpo Fm base reconstruction

Dongpo Fm

Period: 
Neoproterozoic

Age Interval: 
Late Sinian (Late Ediacaran), Z （21, 22）


Province: 
Henan, Shanxi, Shaanxi

Type Locality and Naming

West Henan. Type section of Dongpo Formation is in Luoquan Village, Mangchuan, Ruzhou, Henan province (E112°45′00″; N34°01′00″), re-measured and named by Guan Baode and others in 1988. This formation was originally the upper part of the Luoquan Formation. And GUAN Baode et al. separated it out in 1980 and established a new formation.

[Figure: Type section of the Dongpo Fm]

Synonym: （东坡组）, Shijiagou Fm (时家沟组), Yangsizhuang Fm (杨寺庄组)


Lithology and Thickness

Lower part is composed of lenticular calcareous quartzose sandstone, intercalated with pebbly shale and psepholite (=gritstone to conglomerate). Middle to Upper part is shale intercalated with glauconitic sandstone etc. The total thickness is 94 m.


Lithology Pattern: 
Sandy claystone


Relationships and Distribution

Lower contact

The lowermost part, a bed of brick red silty shale, is conformable onto the underlying Luoquan Fm

Upper contact

The top, a bed of grayish green shale, disconformably underlies the lower Cambrian Xinji Fm

Regional extent

West Henan. The area of the Dongpo Fm is smaller than that of the underlying Luoquan Formation and is mainly in the south of Lingbao, Lushan and Queshan areas, Henan Province.


GeoJSON

{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[111.37,34.23],[109.57,34.24],[109.54,34.27],[109.56,34.38],[109.8,34.62],[110.1,34.73],[110.46,34.75],[110.93,34.82],[111.37,34.82],[111.74,34.75],[112.08,34.72],[112.54,34.59],[112.32,34.46],[111.86,34.31],[111.37,34.23],[107.37,34.27],[107.1,34.51],[107.28,34.53],[107.76,34.62],[108.28,34.68],[108.93,34.89],[109.66,35.07],[110.39,35.44],[110.78,35.6],[110.57,35.12],[110.08,34.75],[109.6,34.48],[109.36,34.4],[108.62,34.24],[108.12,34.21],[107.37,34.27]]]]}}

Fossils


Age 

Late Sinian (Late Ediacaran, posr-Gaskiers glacial) on schematic stratigraphic column

Age Span: 

    Beginning stage: 
Ediacaran

    Fraction up in beginning stage: 
0.65

    Beginning date (Ma): 
572.47

    Ending stage: 
Ediacaran

    Fraction up in the ending stage: 
1.0

    Ending date (Ma):  
538.80

Depositional setting


Depositional pattern:  


Additional Information


Compiler:  

Extracts from The Neoproterozoic Erathem (chapter in Stratigraphic Lexicon of China, draft of 2022) by Gao Linzhi, Ding Xiaozhong, Zhang Chuanheng, Zhang Heng.