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The geology of the Isle of Mull in Scotland is dominated by the development during the early Palaeogene period of a ‘volcanic central complex’ associated with the opening of the Atlantic Ocean. The bedrock of the larger part of the island is formed by basalt lava flows ascribed to the Mull Lava Group erupted onto a succession of Mesozoic ...
The Mull Lava Group is a Palaeogene lithostratigraphic group (a sequence of rock strata) in the west Highlands of Scotland.The name is derived from the Isle of Mull where they are most extensively seen, forming the bedrock across much of the island.
The Isle of Mull [6] or simply Mull [3] [7] (Scottish Gaelic: Muile ⓘ) [8] is the second-largest island of the Inner Hebrides (after Skye) and lies off the west coast of Scotland in the council area of Argyll and Bute. Covering 875.35 square kilometres (337.97 sq mi), Mull is the fourth-largest island in Scotland.
Geological map of the Hebridean Terrane showing distribution of Torridonian sediments. The Torridonian is the informal name given to a sequence of Mesoproterozoic to Neoproterozoic sedimentary rocks that outcrop in a strip along the northwestern coast of Scotland and some parts of the Inner Hebrides from the Isle of Mull in the southwest to Cape Wrath in the northeast.
A president of the Geological Society from 1815 to 1817, he is best remembered for producing the first geological map of Scotland, published in 1836. 'MacCulloch's Tree', a 40-foot (12 m) high fossil conifer in the Mull lava flows, is named after him. [57] [58] Charles Lyell
The southern group of rocks and Ruadh Sgeir are formed from potassium-feldspar-phyric monzogranite intruded as part of the Caledonian Igneous Supersuite towards the end of the Caledonian orogeny (late Silurian to early Devonian period) and form an outlying part of the Ross of Mull pluton.
The dyke is associated with volcanism which took place at the Isle of Mull igneous centre in western Scotland during the early Palaeogene Period at a time of regional crustal tension associated with the opening of the north Atlantic Ocean and which resulted in the intrusion of innumerable dykes. The Cleveland Dyke has been dated to 55.8+/- 0.9 Ma.
To the south is the Ross of Mull, the longest peninsula on Mull, that reaches past the sea loch boundary into the Atlantic. Near the head of Loch Scridain is the Aird of Kinloch , a small peninsula that almost separates the main loch from the small inner sea loch, Loch Beg.