moraines, drumlins, eskers, mega-scale glacial lineations and meltwater-channels), which provide useful information about the extent of former ice sheets, their flow direction and dynamics. There is a variety of glacial landforms resulting from these processes (e.g. Moving glaciers affect the underlying landscape in a number of ways, predominated by erosional processes on the one hand and deposition of glaciogenic material on the other. Organically enriched Palaeozoic shales in south-easterly direction of the Klints Bank presumably give the origin of these thermogenic hydrocarbons. Phase-reversed events within and beneath the Quaternary are perceived as strong evidence of fluid (hydrocarbon) presence within the Klints Bank.

Signs of overprinting are interpreted based on the geometry of the flanks of the structure, which appear mostly in the form of collapse structures and lifted blocks due to compressional thrust faulting. The averaged seismic velocity of this unit is about 2000 m/s, which is interpreted as an autochthonous deposition of glaciogenic sediments. The seismic image of the internal structure of the Quaternary unit shows no uniform stratification or deformation patterns instead, local sub-parallel reflection patterns interlayered with transparent units are observed. We classify the feature as a (giant) drumlin due to its steep up-ice and tapered down-ice face in combination with an orientation parallel to the ice-flow direction of the Weichselian glaciation. The glacial origin of the Klints Bank can be verified with the dataset presented in this study.

The Klints Bank consists of a drop-shaped increase of the Quaternary thickness and is oriented in an approximately north-southern direction with a length of over 50 km, a width of about 15 km and a maximum thickness of 150 m. This work analyses six high-resolution multi-channel seismic profiles across the Klints Bank east of Gotland.

Vista seismic