Sherwood Sandstone Group
…South Head, Cumbria Type Group Unit of New Red Sandstone Supergroup Sub-units Hopwas Breccia Formation, Chester Formation, Wilmslow Sandstone Formation, Helsby Sandstone Formation Underlies Mercia Mudstone Group Overlies Roxby Formation, Cumbrian Coast Group, Aylesbeare Mudstone Group and others Thickness over 2000m Lithology…