Fionn Choire Classified in 1904 by Harker as flow banded rhyolite lava we have discovered clasts (left photo) and intense rheomorphic folding (right photo) and have reclassified this 400m thick exposure as intensely welded (in part parataxitic) and in part rheomorphic ignimbrite. Such rocks are believed to have been produced during low boil over events when they flowed over non level topography at very high temperatures.
Massive Crystal tuff (mCT) containing lapilli of granitic affinity. Photo on left is from Fionn Choire on right from Ben Suirdal 22 kms away. This mCT pre-dates Cuillin intrusion and therefore represents a very early phase of Skye volcanism hitherto unconstrained
