The Weald Clay is well known for its dinosaur fossils. This reconstruction of Iguanodon
is in Southwater shopping centre. Other fossils include fish, plants, freshwater
shells and the delicate remains of insects such as dragonflies.
Exposures of Weald Clay are mostly found in brick pits outside of West Sussex, such
as this one at Smokejacks in Surrey. Permission is required for access but visits
are often organised by various geology groups.
Horsham stone is a sandstone that occurs as layers within the Weald Clay. The ripple
marks, shown here on a gravestone, indicate deposition in river channels. Horsham
stone has been used extensively as roofing slate because it can be split into relatively
Sussex marble is a freshwater limestone found locally developed within the Weald
Clay. It is formed from the shells of a snail known as Viviparus (formerly known
as Paludina) that accumulated in freshwater lakes. The rock is known as a marble
because it can be cut and polished. It has been used as an ornamental stone and can
be seen in many churches - not to be confused with Purbeck marble, which is similar
but has smaller shells.