Upper Greensand Formation
| Upper Greensand Formation | |
|---|---|
| Stratigraphic range: Albian–Cenomanian | |
 Sandstones of the Upper Greensand Formation above Blackgang, Isle of Wight | |
| Type | Geological formation |
| Unit of | Selborne Group |
| Underlies | Chalk Group |
| Overlies | Gault Clay |
| Area | Wessex Basin, Weald Basin |
| Thickness | 0–75 m |
| Lithology | |
| Primary | Sandstone |
| Other | Siltstone |
| Location | |
| Country | England |
The Upper Greensand Formation is a Cretaceous formation of Albian to Cenomanian in age. It is found within the Wessex Basin and parts of the Weald Basin in southern England.[1] It overlies the Gault Clay and underlies the Chalk Group. It varies in thickness from zero to 75 m. It is predominantly a glauconitic fine-grained sandstone, locally becoming silty. Dinosaurs, such as Iuticosaurus, have been recovered from this formation.
References
- ^ "Upper Greensand Formation". The BGS Lexicon of Named Rock Units. British Geological Survey.