Well catalogue for Great Dunmow & Braintree (222, 223), 1965.Well catalogue for Saffron Walden (205), 1965.Water supply of Buckinghamshire and Hertfordshire, 1921*.Water supply of Bedfordshire and Northamptonshire, 1909*.71 (Hemel Hempstead, St Albans and Watford), 1982 Aylesbury and Hemel Hempstead (238), 1922*.London and Thames Valley, 4th edition, 1996.East Anglia and adjoining areas, 4th edition, 1961.(Photograph courtesy of Brian Sawford, North Hertfordshire Museum Services.) Other publications of the Survey dealing with this district and adjoining districts Books The photograph, taken in October, gives the optimum view of the area underlain by till with included Chalk rafts which give the striped tonal changes between lighter Chalk rafts and darker interposed till. (Frontispiece) Aerial view looking east along the scarp from over Therfield towards Reed (right centre) and Barkway (top right). (Photograph courtesy of Brian Sawford, North Hertfordshire Museum Services.) (GS 121C) A typical scene on the Chalk scarp founded on the Chalk Rock (bright patch in field centre right). (Front cover) Cover photograph View from Gannock Farm to the north-west. J J Wymer, MA, DSc The Vines, Great Cressingham, Norfolk.C S Cheney, BSc, MSc, CGeol, FGS British Geological Survey, Wallingford.C J Wood, BSc, CGeol, FGS formerly British Geological Survey.J M Allsop, BSc British Geological Survey, Keyworth.M A Woods, BSc British Geological Survey, Keyworth.I P Wilkinson, BSc, MSc, PhD, CGeol, FGS British Geological Survey, Keyworth.A Smith, BSc British Geological Survey, Keyworth.D T Aldiss, BSc, PhD, CGeol, FGS British Geological Survey, Keyworth.P M Hopson, BSc, CGeol, FGS British Geological Survey, Keyworth.Printed in the UK for HMSO Dd 301325 C8 3/96 Biostratigraphy: C J Wood I P Wilkinson M A Woods.Memoir of the British Geological Survey, Sheet 221 (England and Wales). Memoir for 1:50 000 Geological Sheet 221 (England and Wales)īibliographical reference: Hopson, P M, Aldiss, D T, And Smith, A.
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