TY  - JOUR
A1  - Faithfull, J. W.
A1  - Timmerman, Martin Jan
A1  - Upton, B. G. J.
A1  - Rumsey, M. S.
T1  - Mid-Eocene renewal of magmatism in NW Scotland the Loch Roag Dyke, outer hebrides
JF  - Journal of the Geological Society
N2  - 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.
Y1  - 2012
U6  - https://doi.org/10.1144/0016-76492011-117
SN  - 0016-7649
VL  - 169
IS  - 2
SP  - 115
EP  - 118
PB  - Geological Soc. Publ. House
CY  - Bath
ER  -