SEDIMENTATION IN THE ICE‐CONTACT ENVIRONMENT, WITH EXAMPLES FROM SHROPSHIRE (ENGLAND)

摘要: Glacial sedimentation is assigned to two environments, the pro-glacial and ice-contact. This paper concerned with in ice-contact environment. The sub-drift topography of area study direction ice movement are shown be conducive stagnation which necessary for widespread sedimentation. Ridges glacigenic sediment show faulted, collapsed margins lateral kettle holes characteristic landforms. internal structure these ridges analysed terms primary secondary sedimentary texture. spatial distribution texture similar fluvial models Allen (1964) Visher (1965). absence extension members interpreted as being due stream training by walls preventing migration. Large thicknesses horizontal stratification strongly unimodal palaeocurrent estimates believed a result this low sinuosity. Primary used designate facies. facies thought diagnostic Downstream migration have occurred changes ratio supply power.