The following pictures show the smoothness of Scandinavian bedrock
after glacial "polishing".
The scratches on the surface of the rocks
caused by stones and gravel at the bottom of the moving ice. All
edges of the bedrock and all loose material
removed. When the ice melted
the whole Scandinavian
was well rounded like this.
In a plain landscape the scratches show the
general direction of
the movement of the glacier.
In a hilly landscape the ice flows like a viscous liquid around the
the striation changes
direction following the shape of the surface.
can be enlarged (400- 500 KB each)