1. Allen, P.M. 1982. Lower Palaeozoic volcanism in Wales, the Welsh Borderland, Avon and Somerset. In: Sutherland, D.S. (ed) . Igneous rocks of the British Isles. Wiley & Son, Chichester65-91.
2. Major southeast-directed Caledonian thrusting and folding in the Dalradian rocks of mid-Ulster: implications for Caledonian tectonics and mid-crustal shear zones
3. Xenoliths of Iapetus Suture mylonites in County Down lamprophyres, Northern Ireland
4. Armstrong, H.A. & Owen, A.W. 2000. Age and provenance of limestone clasts in LORS conglomerates: implications for the strike-slip accretion of the Midland Valley Terrane. In: Friend, P.F, Williams, & B.P.J. (eds) . New Perspectives on the Old Red Sandstone. Geological Society, London. Special Publications. 459-471.