More of Hutton on Arran + video

In addition to the famous angular unconformity seen near Lochranza on the Isle of Arran, Hutton also made an important discovery concerning the emplacement of plutonic systems. The Isle of Arran is cored by a large circular granitic pluton. This Tertiary-age pluton is rimmed by the steeply dipping Dalradian Supergroup and the Old Red Sandstone. […]