Boudinage Structure in West Cork, Ireland

Abstract

Boudinage occurs with great regularity in parts of West Cork. The principle break-up of competent beds is into boudins with the separation parallel to the dip of the bedding, but where the exposure permits examination in three dimensions it can be seen that incipient boudinage is developed with separation parallel to the strike of the bedding. The structure is shown to have originated after the main phase of folding by horizontal forces acting on steeply inclined beds. Some unusual features are described.