Selborne Group

Selborne Group
Stratigraphic range: Albian-Cenomanian 113–94 Ma
TypeGroup
Sub-unitsGault Formation, Upper Greensand Formation
UnderliesChalk Group
OverliesLower Greensand Group
Thicknessup to 110 m in the Weald, but in marginal areas may be less than 5 m thick.
Lithology
PrimaryGlauconitic Sandstone,
OtherMudstone, Limestone & Marl
Location
RegionEngland
CountryUnited Kingdom

The Selborne Group is a geologic group in England. It preserves fossils dating back to the Cretaceous period. It comprises the Gault Formation (informally/traditionally the Gault Clay or Blue Marl) and the overlying Upper Greensand Formation (earlier known as the Malm or Malm Rock).[1][2]

  1. ^ "BGS Lexicon of Named Rock Units - Result Details".
  2. ^ "BGS Lexicon of Named Rock Units - Result Details".