2. Geology
2.1 Palaeogene
2.2 Cretaceous
2.3 Jurassic
2.4 Permian
2.5 Intrusive
A south-east to north-west line across Mid Anglia from Hitchin in Hertfordshire to Corby in Northamptonshire runs from chalk and greensand of the Cretaceous period across all 10 divisions of the Jurassic. Most of the landscapes overlie Jurassic bed rock.
Descriptions of the rock formations can be found in the following seven nodes and related to the coded divisions of the following geological map.
graphic
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