- GeoRef, Copyright 2004, American Geological Institute. Reference includes data from Bibliography and Index of Geology Exclusive of North America, Geological Society of America, Boulder, CO, United States
Measurements of various landforms in relation to sea level indicate the presence of four raised beaches along the northernmost coast of Scotland. The two upper levels, which appear to correspond to the 100-foot and 50-foot levels elsewhere in Scotland, are tilted and are higher to the east. The two lower levels are horizontal and correspond to the 25-foot and 15-foot levels. Because the elevations vary and are lower than those recorded in other parts of Scotland, it is proposed that they be designated by zones relating them to the standard pollen zones.