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Fenshuiling Formation
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Fenshuiling Fm base reconstruction

Fenshuiling Fm

Period: 
Cretaceous

Age Interval: 
Early Cretaceous, K1fs (27c)


Province: 
Shandong

Type Locality and Naming

The formation was called as the Fenshuiling sub-formation by the Beijing College of Geology and described by The Shandong Bureau of Geology in 1991. The type locality is in the Mengyin, and the key section is the Caoyang Village – Fenshuiling Village section in the Wennan Town of Xintai City, Shandong.

Synonym: The Mengyin Fm (or Mengyin Gr) is either coeval in this same region (Mengyin basin) or is a synonym. However, Liu et al. (2019, The Cretaceous of Shandong Province, Open Jour. Geol., 9: 646-649, https://doi.org/ 10.4236/ojg.2019.910064) indicate "The Mengyin Group consists of the lower Santai Fm and the upper Fenshuiling Fm."


Lithology and Thickness

The Fenshuiling Formation is a group of grayish yellow, yellowish green, dark grey siltstone, sandstone, shale intercalated with sandy conglomerate. The formation is 795.5 m thick at the key section; it is 53.8 m in Jiepai of Mengyin.


Lithology Pattern: 
Fine-grained sandstone


Relationships and Distribution

Lower contact

The Fenshuiling Formation is conformably overlying the Santai Fm.

Upper contact

The Fenshuiling Formation is conformably underlying the Chengshanhou Fm.

Regional extent

It is distributed in the Mengyin and Zibo basins of western Shandong.


GeoJSON

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Fossils

None listed


Age 

Not given, but conformable top to the Valanginian-age Chengshanhou and conformable overlying the Late Jurassic through earliest Berriasian Santai Fm implies late Berriasian.

Age Span: 

    Beginning stage: 
Berriasian

    Fraction up in beginning stage: 
0.5

    Beginning date (Ma): 
140.40

    Ending stage: 
Valanginian

    Fraction up in the ending stage: 
0.2

    Ending date (Ma):  
136.68

Depositional setting


Depositional pattern:  


Additional Information


Compiler:  

Wan Xiaoqiao