Hampshire Basin

Geological map of southeastern England and parts of France, showing the Hampshire Basin in its regional context.
North-south cross-section of the upper crust of southern England, showing the Paleogene London Basin to the north and Hampshire Basin to the south. Also visible is the inverted nature of the Weald, which was a basin during the Early Cretaceous and thus has a relatively thick Lower Cretaceous sequence. Vertical exaggeration 1:5.
Geological map of the Hampshire Basin

The Hampshire Basin is a geological basin of Palaeogene age in southern England, underlying parts of Hampshire, the Isle of Wight, Dorset, and Sussex. Like the London Basin to the northeast, it is filled with sands and clays of Paleocene and younger ages and it is surrounded by a broken rim of chalk hills of Cretaceous age.