The Buchan anticline of the Banff nappe of Dalradian rocks in North-East Scotland

Abstract

The Dalradian rocks involved in the Buchan anticline in Aberdeenshire belong to four groups: (1) the Ellon Gneisses, in part migmatitic, equated with the Ben Lui-Ben Lawers groups of the standard Lower Dalradian of Perthshire, (2) the Mormond Hill Quartzite, placed in the Upper Dalradian, and conformably followed eastwards by (3) the Collieston Beds of greywacke facies, and lastly, (4) the Fraserburgh Beds of similar facies occurring west of the Mormond Hill Quartzite, from which they are separated by a dislocation.