| Jianxing Formation | |
| Type: | Geological Formation |
| Region: | Heilongjiang Province |
| Country: | China |
The Jianxing Formation is located in Suiling County, Heilongjiang Province and is composed of basal conglomerate and gravel-bearing coarse-grained sandstone, with interbeds of siltstone, mudstone and coal seams. The Jianxing Formation has been dated to the Early Cretaceous period.[1]