Vectis Formation

Vectis Formation
Stratigraphic range: Aptian 131–113 Ma
TypeGeological formation
Unit ofWealden Group
  • Shepherds Chine Member
  • Barnes High Sandstone Member
  • Cowleaze Chine Member
UnderliesAtherfield Clay Formation
OverliesWessex Formation
ThicknessMaximum of 66 m
PrimarySiltstone, Mudstone
OtherSandstone, Limestone, Ironstone
Country UK
ExtentDorset, Isle of Wight

The Vectis Formation is a geological formation on the Isle of Wight, England whose strata date back to the Early Cretaceous (lowermost Aptian stage, 125 million years ago).[1][2] The Vectis Formation is composed of three geological members: the Shepherds Chine member, the Barnes High Sandstone member, and the Cowleaze Chine member. Dinosaur remains are among the fossils that have been recovered from the formation.[3]


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