Chaochuan Formation
Geologic formation in Zhejiang, China
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The Chaochuan Formation is a geologic formation in China (Zhejiang Province). It is made up of purplish red calcarenaceous, muddy siltstone, fine-grained sandstone with interbeds of tuffaceous sandstone and conglomerate or rhyolitic tuff.[1]
TypeFormation
UnderliesFangyan Formation
OverliesEarly Cretaceous tuff and Moshishan Group
Thicknessup to 518 metres (1,699 ft)
| Chaochuan Formation | |
|---|---|
| Stratigraphic range: Albian-Cenomanian ~ | |
| Type | Formation |
| Underlies | Fangyan Formation |
| Overlies | Early Cretaceous tuff and Moshishan Group |
| Thickness | up to 518 metres (1,699 ft) |
| Lithology | |
| Primary | Sandstone, siltstone |
| Other | Tuff |
| Location | |
| Coordinates | 28.7°N 119.2°E |
| Approximate paleocoordinates | 35.6°N 117.0°E |
| Region | Zhejiang Province |
| Country | China |
  Chaochuan Formation (China)  Chaochuan Formation (Zhejiang) | |
Fossil content
The following fossils were reported from the formation:
- Dongyangopelta yangyanensis[2]
- Therizinosauridae indet. (once known as "Chilantaisaurus" zheziangensis)[3][4][5]
- Zhejiangosaurus lishuiensis[6]