In the district of the Weald marl prevails, with a substratum of clay.
The principal hop districts are the country between Canterbury and Faversham, the valley of the Medway in mid Kent, and the district of the Weald.
There were formerly extensive ironworks in the Weald.
In these hollows the Tertiary rocks were protected from erosion, and remain to form the London and the Hampshire Basins respectively, while on the anticlinal axis the whole of the Tertiary and the upper Cretaceous strata have been dissected away, and a complex and beautiful configuration has been impressed on the district of the Weald.
The gentle undulating ' Weald ' is dotted with hop fields and fat cattle graze in lush green meadows.