corton formation

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The Corton Formations comprise two stratigraphic facies, an upper thicker fine to medium sand which becomes a pebbly sand towards the base (around Lowestoft, the pebbly sands may be more extensive), and a lower till comprising very silty sandy clay or clayey sand. Deposition by an ice sheet which flowed southwards into north-east East Anglia from central and southern Scotland eroding and transporting materials derived from outcrops in these areas and from eastern England and the western margins of the southern North Sea Basin. It is concluded that the long held assumption that the Happisburgh Till and Corton Till of the Corton Formation were deposited by a Scandinavian ice sheet is erroneous and that they were instead deposited by Scottish ice (Lee et-al 2002)