Upper Dalradian sediments are exposed on the north coast of Banffshire and Aberdeenshire between Boyne Bay and Fraserburgh. The section is almost at right angles to the trend of the main structural features, but there are strike sections of more than a quarter of a mile along the sides of inlets, and vertical sections on cliffs up to five hundred feet high. Information on these rocks has been published by several geologists (see sections 2:1 and 4:2). Their descriptions of the structural geology and sedimentary petrology are extended here and new interpretations proposed (sections 2 and 4) in the light of modern work on the origin of folds and sediments. Techniques involving the use of a computer, which might be useful in studies of this kind, are proposed in section 3.