Selborne Group

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]

Selborne Group
Stratigraphic range: Albian-Cenomanian
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

See also

References


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