Ventifacts and frost fissures in the foreland of the Poznan phase of the last glaciation - the Poznan Till Plain

Authors:

• Barbara Antczak-Górka

Abstract

The analysis of ventifacts was performed in order to determine the contents of eologliptoliths and ventifacts in relation to the population of stones. Aeolian cover sands were found in two places in the study area. A statistical comparison was made of the populations of ventifacts on the surface and in stone horizons, and an analysis of grain-size distribution and the abrasion of quartz grains of deposits connected with wind-faceted stones was also made. Tomiczki and Rybojedki, structures of epigenetic frost fissures were found. The co-occurrence of ventifacts formed in different morphological placements and frost fissure structures supports the hypothesis that the study area was the periglacial zone and periglacial processes played an important role here. -from English summary