Section 3

The third stage of the walk involved crossing the great swath of Jurassic rock which stretches in an unbroken band from the Dorset coast up to East Yorkshire. The rocks within these deposits include the Oolitic Limestone of the Cotswolds, one of the great building stones of England.
From the foot of the Chilterns, my route passed through Lewknor and Horton-cum-Studley, then circled north-east of Oxford via Islip and Upper Heyford. Continuing north, I followed the Oxford Canal to Kings Sutton, then branched off to visit Woodford Halse, before returning to the canal at Napton-on-the-Hill.
The Jurassic deposits of this area consist of a series of limestones that alternate with bands of clay and create a pattern that can be clearly read in the buildings of the region. Further north the limestone gives way to ironstone. This is worked in a similar fashion to the limestone, but has a much richer colour, giving the villages a warm ochre glow.

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