The tectonic evolution of the lower Palaeozoic rocks of extreme SE Ireland

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Abstract
Summary: Five deformation phases (D 0 –D 4 ) and four metamorphic events (M 0 –M 3 ) are recognised in the lower Palaeozoic rocks of an extensive area lying to the south of the Leinster granite. D 0 and M 0 features are interpreted as being the result of post diagenetic burial metamorphism. The main regional deformation (D 1 ) preceded the intrusion of the Leinster granite and produced tight folds and an axial-planar slaty cleavage. D 2 and D 3 deformations produced more brittle linear and planar structures. They show a localised development which is interpreted as being due to late stage movements of unexposed granite bodies at relatively shallow depths.