The stratigraphy and structure of the Moine rocks N of the Schiehallion Complex, Scotland

Abstract

Sedimentary structures are used to establish a 'Younger' Moine stratigraphical succession in Strathtummel. Polyphase re-folding of the Moine sequence between Schiehallion and Drumochter can be clearly subdivided into primary and secondary deformations. Primary NE-SW trending deformational events D 1 and D 2 include the formation of the south-eastward facing D 1 Atholl nappe re-folded by strongly overturned D 2 folds which become upright on the crest of the Drumochter dome. Secondary deformation resulted in D 3 (oblique) and D 4 (transverse) major folds, both of which plunge into the SE quadrant.