Summary of Soil Distribution 61 



Bunter sand— Sherwood and Delamere Forests, Forest of 

 Arden, etc. 



Clays. Boulder clay {e.g. of south Lancashire and 

 Cheshire). London clay (London and Hampshire basins). 

 Gault clay — east and south Midlands and Weald. 

 Jurassic clays (Kimeridge and Oxford clays)— east and 

 south Midlands. 



Other "siliceous" soils (see pp. 33, 122)— Archaean, 

 Palseozoic, metamorphic and igneous rocks (other than 

 limestones) of the north and west. 



Marls. Chalky boulder clay (mainly overlying chalk) 

 — East Anglia and east Midlands. Liassic marls— Mid- 

 lands and south-west England. Keuper marP — Midlands 

 and south-west England. 



Limestones. Chalk (main outcrop and Weald) — 

 southern and eastern England, Yorkshire and Lincoln- 

 shire wolds. Oolitic limestones — Cotswold region, etc. 

 Magnesian limestone — Nottinghamshire, Yorkshire, etc. 

 Carboniferous (mountain) limestone — Pennines, Mendips 

 and Wales. Devonian limestones of Devonshire. Silurian 

 limestones — borders of South Wales. 



Alluvium. Mixed soils largely of fine texture — flood 

 plains of rivers and on sites of old estuaries. 



' Not always calcareous. 



