Lower Greensand Group
Geological unit / From Wikipedia, the free encyclopedia
The Lower Greensand Group is a geological unit present across large areas of Southern England. It was deposited during the Aptian and Albian stages of the Early Cretaceous. It predominantly consists of sandstone and unconsolidated sand that were deposited in shallow marine conditions.
Quick Facts Type, Sub-units ...
Lower Greensand Group | |
---|---|
Stratigraphic range: Aptian- Early Albian 125–110 Ma | |
Type | Stratigraphic group |
Sub-units |
|
Underlies | Selborne Group |
Overlies | In Southern England, Wealden Group, elsewhere Jurassic rocks |
Thickness | ~250m in South Western Weald |
Lithology | |
Primary | Sandstone |
Other | Siltstone, Clay |
Location | |
Region | England |
Country | UK |
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