Glaciotectonically disturbed sediments at Rönnerum on the island of öland

Abstract

Some disturbances in glacial sediments were found in a gravel pit at Rönnerum on the island of öland. The features were interpreted as having been caused by glaciotectonic forces, and their fold axes were investigated. The results have been compared with the available knowledge of the late ice-movements over Kalmarsund (based on the studies of glacial striae on the Swedish mainland), and the new information is in good agreement with the earlier-established ideas of these movements. Glaciotectonic features may be expected to appear more frequently in Sweden than has hitherto been assumed, and important new information may be gained from the study of such features.