Lower Greensand Group
| Lower Greensand Group | |
|---|---|
| Stratigraphic range: Aptian – Early Albian | |
Lower Greensand outcrop near Dryhill | |
| Type | Stratigraphic group |
| Sub-units |
|
| Underlies | Selborne Group |
| Overlies | In Southern England, Wealden Group, elsewhere Jurassic rocks |
| Thickness | ~250 m in South Western Weald |
| Lithology | |
| Primary | Sandstone |
| Other | Siltstone, Clay |
| Location | |
| Region | England |
| Country | United Kingdom |
The Lower Greensand Group is a geological unit present across large areas of Southern England. It was deposited during the Aptian and Albian ages of the Early Cretaceous. It predominantly consists of sandstone and unconsolidated sand that were deposited in shallow marine conditions.