Forster, A.; Hobbs, P.R.N.; Cripps, A.C.; Entwisle, D.C.; Fenwick, S.M.M.; Raines, M.R.; Hallam, J.R.; Jones, L.D.; Self, S.J.; Meakin, J.L.. 1994 Engineering geology of British rocks and soils : Gault Clay. Nottingham, UK, British Geological Survey, 76pp. (WN/94/031) (Unpublished)
The Gault is a sequence of clays, mudstones and thin siltstones
with bands of phosphatic nodules of Middle and
Upper Albian age. Its outcrop stretches south-westward
fron1 East Anglia through Wessex to west Dorset and surrounds
the Weald in an arc from North East Kent westwards
through Surrey to Hampshire where it turns south
and returns· eastward through west and east Sussex. The
Gault clay thickens to the south and reaches its maximum
developlnent of over 100 m in the Weald and thins to the
west as it passes into Hampshire and Dorset.
The Gault clay contains both clay and non-clay mineralso
The major non-clay minerals are quartz and calcite.
Quartz usually makes up about 20% or more of the Gault
and its distribution is fairly uniform. Calcite is present as
fossil debris and as a cementing agent. The Gault is more
calcareous in the north east than the south and west.
Downloads per month over past year
 |