Viete, DanielOliver, Grahame J.H.Fraser, Geoffrey L.Forster, MargaretLister, Gordon2015-12-130024-4937http://hdl.handle.net/1885/74024New SHRIMP U/Pb zircon ages of 472.2±5.8Ma and 471.2±5.9Ma are presented for the age of peak metamorphism of Barrovian migmatites. 40Ar/39Ar ages for white mica from the Barrovian metamorphic series are presented, and are recalculated using recently-proKeywords: argon isotope; argon-argon dating; contact metamorphism; crustal structure; geochronology; heat source; magmatism; migmatite; orogeny; regional metamorphism; SHRIMP dating; sillimanite; uranium-lead dating; zircon; Scotland; United Kingdom Bimodal magmatism; Contact metamorphism; Geochronology; Orogenesis; Regional metamorphism201310.1016/j.lithos.2013.06.0092016-02-24