Glazigene Sichelmarken als Klimazeugen (Nach Beobachtungen in Finnland)

Martin Schwarzbach
In the Koli Mts. (northern Karelia, Finland) Pleistocene glacial whaleback-forms show — besides of glacial striation — many exellently exposed crescentic friction cracks on the quartzitic rocks. Similar features were already described from North America and northern Europe. Both in the American and in the German literature, the conventional nomenclature for these marks is not very logical. In this paper, it is proposed 1. to differentiate between marks which are either concave or convex downstream;...