Late Quaternary history of the Skagerrak; an interpretation of acoustical profiles

Abstract

In the Skagerrak several sedimentary units are present that were found previously in the Norwegian Channel. The thickness and distribution of late-postglacial sediments is measured and mapped. The origin of the sediments are discussed and a model for the late-Quaternary sedimentary history of the area is suggested. The occurrence of shadow zones is related to gasbubbles or coarse materials in the subsoil. Sedimentary structures such as large scale foresets and giant sand waves are found along the southern border of the Skagerrak. The sand waves are considered as relict structures. The bottom relief in the Skagerrak is closely related to the sedimentary history; along the southern border ice grounding has probably played an important role.