The Loch Doon granite: an example of granite petrogenesis in …
The Loch Doon igneous complex lies to the N of the Solway–Shannon Iapetus Ocean suture line through the British Isles, but in a region lacking the Proterozoic continental basement which is known to exist further N.
Stratigraphy and structure of the Assynt window - GeoScienceWorld
2023年9月12日 · The Moine Supergroup to the east of the Moine thrust comprises a thick succession of unfossiliferous psammites and semi-pelites, including the Morar Group (1000–950 Ma), the Loch Eil and Glenfinnan Groups (900–870 Ma) intruded by the West Highland granite gneiss (870 Ma) and the ∼600 Ma Carn Chuinneag granite (Peach et al.
Late-tectonic granitoid intrusions, Caledonian magmatism, …
Three distinct suites of late-tectonic granitic intrusions are recognised in the northern Grampian Highlands. Two of the suites consist of S-type granites, commonly foliated and garnet-bearing, which postdate the regional migmatisation, the major basic intrusions described above and the D 3 tectonic episode.
Newer Granites, Younger Caledonian igneous rocks, Northern …
The Grudie Granite to the south of Loch Shin is a small adamellitic mass with some associated veining. It appears to have been the locus of fairly widespread base-metal sulphide mineralisation, and molybdenite is unusually common (Gallagher and others, 1974).
The sheets and veins of granite (sensu lato), pegmatite, and aplite, which occur in the zone of veins and in profusion in the zone of migmatite, are a distinctive feature of the complex.
(PDF) Structural, petrological, and tectonic constraints on the Loch …
2021年5月14日 · New detailed field mapping and structural and petrological observations are used to constrain the geological evolution of both the Loch Ailsh and the Loch Borralan intrusions and the chronology...
Structure of the Assynt window, Moine Thrust Zone and …
2023年9月12日 · The Moine Supergroup to the east of the Moine thrust comprises a thick succession of unfossiliferous psammites and semi-pelites, including the Morar Group (1000–950 Ma), the Loch Eil and Glenfinnan Groups (900–870 Ma) intruded by the West Highland granite gneiss (870 Ma) and the ∼600 Ma Carn Chuinneag granite (Peach et al.
Migmatites, early igneous activity within the Caledonides, …
Masses of oligoclase-bearing granite lie within the complex, of which the Loch Coire granite is the largest. It is weakly foliated. The rocks of the complex are cut by seams of pink aplite, probably of separate, later generation.
Petrogenesis of the Loch Bà ring-dyke and Centre 3 granites
2021年2月9日 · The Loch Bà ring-dyke and the associated Centre 3 granites represent the main events of the final phase of activity at the Palaeogene Mull igneous complex. The Loch Bà ring-dyke is one of the best exposed ring-intrusions in the world and records intense interaction between rhyolitic and basaltic magma.
Certain sheets of granophyre, large and small, intruded in the Mesozoic strata along a curved belt of country from Beinn Bhuidhe, near Broadford, to Suishnish, between Loch Slapin and Loch Eishort, are reserved for special description.