@article{FaithfullTimmermanUptonetal.2012, author = {Faithfull, J. W. and Timmerman, Martin Jan and Upton, B. G. J. and Rumsey, M. S.}, title = {Mid-Eocene renewal of magmatism in NW Scotland the Loch Roag Dyke, outer hebrides}, series = {Journal of the Geological Society}, volume = {169}, journal = {Journal of the Geological Society}, number = {2}, publisher = {Geological Soc. Publ. House}, address = {Bath}, issn = {0016-7649}, doi = {10.1144/0016-76492011-117}, pages = {115 -- 118}, year = {2012}, abstract = {Amonchquite dyke, in the vicinity of Loch Roag, Lewis, Outer Hebrides has an unusually enriched chemistry, and contains a unique assemblage of megacrysts and xenoliths from the lithosphere of the Hebridean craton. A Ar-40/Ar-39 plateau age of 45.2 +/- 0.2 Ma (2 sigma) of a phlogopite megacryst from the dyke overlaps an earlier reported K-Ar age, and confirms that the British Palaeogene Igneous Province extended into the Eocene. Similar late low-volume melts were erupted in the Eocene and Oligocene in West and East Greenland, suggesting that such late-stage magmatic rejuvenescence is a widespread feature across the North Atlantic Igneous Province.}, language = {en} }