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Lianhe Formation
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Lianhe Fm base reconstruction

Lianhe Fm

Period: 
Cretaceous

Age Interval: 
Late Cretaceous, K2lh, (39a)


Province: 
Jiangxi

Type Locality and Naming

The Lianhe Formation was named by Li Zhonghong et al. in 1961. The type locality is in Hetang of the Hengfeng County. The key section is the Hekou – Tangbian section between the Qianshan and Hengfeng counties, Jiangxi (117º41', 28º16').


Lithology and Thickness

The formation is composed of brownish red conglomerate, sandy conglomerate intercalated with sandstone, siltstone and mudstone. It is over 1631 m in thickness.


Lithology Pattern: 
Conglomerate


Relationships and Distribution

Lower contact

The formation is overlying the Tangbian Fm conformably

Upper contact

Underlying the Xinyu Fm or Chijiang Fm conformably.

Regional extent

It distributed in Qianshan, Hengfeng, Yuxian, Yongxin, and Guangchang areas.


GeoJSON

{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[117.18,29.2],[117.82,28.4],[117.99,28.02],[117.71,27.9],[117.47,27.72],[117.25,27.57],[117.18,27.58],[117.01,27.71],[116.92,27.98],[116.85,28.3],[116.87,28.67],[116.85,29.01],[117.03,29.18],[117.18,29.2]]]]}}

Fossils

The formation yields spore and pollen Leiotriletes sp., Botrychium sp., Osmunda sp., Polypodium sp., Ginkgo sp., Podocarpus sp., Pinus sp., Pterocarya sp.; dinosaur egg Elongatoolithus elongates, Macroolithus rugustus, Spheroolithus sp.; gastropods Trancatella maxima, Rubeyella carinata, Viviparus sp., Reesidella sp.


Age 


Age Span: 

    Beginning stage: 
Campanian

    Fraction up in beginning stage: 
0.9

    Beginning date (Ma): 
73.32

    Ending stage: 
Maastrichtian

    Fraction up in the ending stage: 
1.0

    Ending date (Ma):  
66.04

Depositional setting


Depositional pattern:  


Additional Information


Compiler:  

Wan Xiaoqiao