Subject ASC0001gn9
The Quarterly journal of the Geological Society of London.
v.10 (1854), Page 403 (1854)
Smithsonian Libraries
BHL Page 35013372
Keywords
London Clay geology sea-level wimbledon common The Thames Valley Kensington Union Paddington Hampstead Heath Lower London Tertiaries Chalk Wells from Cheam to Hampstead Wells from Northaw to Loughton geological sands formations formations London land sea cross-section Cheam Hampstead Wimbledon Common Thames valley Bagshot Sands Lower Tertiaries Tertiary Heath vertical dotted lines clay chalk chalk-pit Cretaceous Loughton High Beech Valley of the Lea Northaw Waltham Cross