Glacial dynamics during the deglaciation of the Bohnen area, SW Sweden

An area west of Lake Bolmen in southwestern Sweden was investigated by geomorphological, lithostratigraphical, and sedimento‐logical methods. Ice movement directions inferred from striae, end moraines, and drumlins indicate that the initial deglaciation of the western part of the area was towards the NE. This was probably followed by a readvance from the N and a final deglaciation towards the N. In the eastern part of the Bohnen area the deglaciation was continuous and the ice movement gradually changed from a direction from the NE to a direction from the N. Sedimentological investigations were made in two moraine ridges. These and other ridges are connected, together named the Unnaryd moraine and are interpreted to consist of ice slope colluvium and debris flows deposited proglacially. The Unnaryd moraine is the eastward continuation of a previously known end moraine called the Torup moraine. The combined Torup‐Unnaryd moraine marks the southern limit of the readvance from the N. It was also found that the Unnaryd‐Torup moraine postdates a geomorphological border‐line across southern Sweden with which it was previously correlated. Andersson, G., 1997: Glacial dynamics during the deglaciation of the Bolmen area, SW Sweden. GFF, Vol. 119 (Pt. 3, September), pp. 207–212. Stockholm. ISSN 1103–5897.