Ailsa Craig Central Complex, Hebridean Igneous Province - Revision history

Dbk at 11:17, 1 February 2018

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	'''From: Emeleus, C H, and Bell, B R. 2005. [[British regional geology: The Palaeogene volcanic districts of Scotland\|British regional geology: The Palaeogene volcanic districts of Scotland]]. Fourth edition. Keyworth, Nottingham: British Geological Survey.'''		{{PVDS}}
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	== Introduction ==		== Introduction ==

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	== Introduction ==		== Introduction ==
			[[File:P914119.png\|thumbnail\|Palaeogene central complexes, lava fields, sill-complexes and dyke swarms in western Scotland and north-east Ireland. P914119]]
	Ailsa Craig is a spectacular, conical island in the Firth of Clyde about 20 km south of Arran ([[Media:P914119.png\|P914119]]). It is formed by a boss of peralkaline microgranite intruded into Triassic rocks. The microgranite is characterised by riebeckitic arfvedsonite and Zr-rich aegirine (Harding, 1983; Harrison et al., 1987); aenigmatite also occurs (Howie and Walsh, 1981). This distinctive rock-type is a widespread glacial marker southwards on either side of the Irish Sea (p. 160). It has traditionally been a favoured lithology for the manufacture of curling stones (p. 173).		Ailsa Craig is a spectacular, conical island in the Firth of Clyde about 20 km south of Arran ([[Media:P914119.png\|P914119]]). It is formed by a boss of peralkaline microgranite intruded into Triassic rocks. The microgranite is characterised by riebeckitic arfvedsonite and Zr-rich aegirine (Harding, 1983; Harrison et al., 1987); aenigmatite also occurs (Howie and Walsh, 1981). This distinctive rock-type is a widespread glacial marker southwards on either side of the Irish Sea (p. 160). It has traditionally been a favoured lithology for the manufacture of curling stones (p. 173).

Scotfot at 21:29, 21 July 2015

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	== Introduction ==		== Introduction ==
	Ailsa Craig is a spectacular, conical island in the Firth of Clyde about 20 km south of Arran (P914119). It is formed by a boss of peralkaline microgranite intruded into Triassic rocks. The microgranite is characterised by riebeckitic arfvedsonite and Zr-rich aegirine (Harding, 1983; Harrison et al., 1987); aenigmatite also occurs (Howie and Walsh, 1981). This distinctive rock-type is a widespread glacial marker southwards on either side of the Irish Sea (p. 160). It has traditionally been a favoured lithology for the manufacture of curling stones (p. 173).		Ailsa Craig is a spectacular, conical island in the Firth of Clyde about 20 km south of Arran ([[Media:P914119.png\|P914119]]). It is formed by a boss of peralkaline microgranite intruded into Triassic rocks. The microgranite is characterised by riebeckitic arfvedsonite and Zr-rich aegirine (Harding, 1983; Harrison et al., 1987); aenigmatite also occurs (Howie and Walsh, 1981). This distinctive rock-type is a widespread glacial marker southwards on either side of the Irish Sea (p. 160). It has traditionally been a favoured lithology for the manufacture of curling stones (p. 173).

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'''From: Emeleus, C H, and Bell, B R. 2005. [[British regional geology: The Palaeogene volcanic districts of Scotland|British regional geology: The Palaeogene volcanic districts of Scotland]]. Fourth edition. Keyworth, Nottingham: British Geological Survey.'''
__FORCETOC__
== Introduction ==
Ailsa Craig is a spectacular, conical island in the Firth of Clyde about 20 km south of Arran (P914119). It is formed by a boss of peralkaline microgranite intruded into Triassic rocks. The microgranite is characterised by riebeckitic arfvedsonite and Zr-rich aegirine (Harding, 1983; Harrison et al., 1987); aenigmatite also occurs (Howie and Walsh, 1981). This distinctive rock-type is a widespread glacial marker southwards on either side of the Irish Sea (p. 160). It has traditionally been a favoured lithology for the manufacture of curling stones (p. 173).

== References ==
[[References, Palaeogene volcanic districts of Scotland|Full reference list]]

[[Category:Palaeogene volcanic districts of Scotland]]