Grondboor & Hamer , Volume 34 - Issue 4 p. 110- 113
In the north of Mors (Jutland) the moler (mo=flat, barren, sandy steppe and ier= ground, loam, soil. Petrified diatomaceous earth) pedestal cobble (foto 1) was found. This cobble has been moulded by a sand wind, with the exception of the foot. That foot consists of rather hard volcanic tuff. The upper part of the stone is thinly stratified by laminae of tuff and moler. The former form fine ridges. On sand beaches one may find sand mushrooms or sand cones. Gripp (1961) ascribes their origin to a greater compactness of sand which arises by this sand sliding down the lee side of a barchan. If this sort of sand has been moistened it is more dense. A sand wind gives them their particular shape. They are not very lasting. Soon sun and wind destroy them. Differences in granularity can be noticed in the ridges standing out from the sand mushrooms. These ridges consist of fine sand. The finer the granulation, the more resistance to wind erosion. The material of the pedestal cobble owes its copactness to diagenesis.
|404076.jpg Cover Image , 26kb|