Elsterian ice‐sheet retreat in the southern North Sea: antecedent controls on large‐scale glaciotectonics and subglacial bed conditions

High‐resolution shallow sub‐bottom seismic survey data obtained for the Dudgeon windfarm site located 50 km offshore of the north Norfolk coast in the southern North Sea have revealed that the chalk bedrock in this area is overlain by sediments deposited during the Elsterian and Weichselian glacial periods. A buried N–S‐trending subglacial drainage channel (tunnel valley) filled with Swarte Bank Formation ( MIS 12) sediments indicates that the...