23 research outputs found
An attempt to use the roundness of quartz grains for till stratigraphy
The roundness of quartz grains in till stratigraphical samples was studied from Central and eastern Finland. The results show slight differences between the various portions of the till beds as well as areal differences. The surface texture of the quartz grains in till studied with the aid of scanning electron microscopy displays glacial and eolian features. Examination of the roundness and surface texture seems to be a useful tool in till stratigraphical studies