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Loch Ailsh Pluton

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Series: Geological Society, London, Special Publications, Geological Society, London, Special Publications
Published: 01 January 2010
DOI: 10.1144/SP335.18
EISBN: 9781862395831
... with intrusion of the Loch Ailsh pluton and initiation of the Moine and Ben More Thrusts; (2) structural relationships around the Borralan intrusion, particularly the nature of its basal and lateral margins (intrusive or thrust-ramp); (3) the structural relationships of the Cam Loch and Benn Fhuarain klippen...
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Image
Simplified geological map of the Northern Highlands, showing the main struc...
Published: 01 January 2011
Fig. 1. Simplified geological map of the Northern Highlands, showing the main structures and intrusions. Major thrusts: MT, Moine Thrust; BHT, Ben Hope Thrust; NT, Naver Thrust; SBT, Sgurr Beag Thrust. Alkaline plutons: GDP, Glen Dessarry Pluton; LBP, Loch Borralan Pluton; LAP, Loch Ailsh Pluton
Journal Article
Published: 01 January 2011
Journal of the Geological Society (2011) 168 (1): 99–114.
...Fig. 1. Simplified geological map of the Northern Highlands, showing the main structures and intrusions. Major thrusts: MT, Moine Thrust; BHT, Ben Hope Thrust; NT, Naver Thrust; SBT, Sgurr Beag Thrust. Alkaline plutons: GDP, Glen Dessarry Pluton; LBP, Loch Borralan Pluton; LAP, Loch Ailsh Pluton...
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Journal Article
Published: 01 April 2006
Scottish Journal of Geology (2006) 42 (1): 77–81.
... uncertain. A maximum age for thrusting in the eastern (upper) part of the Moine Thrust Belt is given by the Loch Ailsh pluton, which has a U-Pb zircon date of 439 ± 4 Ma ( Halliday et al. 1987 ). Exposure around this pluton is notoriously poor, and its field relationships cannot be easily determined...
FIGURES
Journal Article
Published: 01 August 1987
Journal of the Geological Society (1987) 144 (4): 611–617.
... 'piggyback' on lower thrusts (Elliott & Johnson 1980; Coward 1985). Fortunately, in Assynt, a suite of alkaline dykes and sills, and two major plutons, the Loch Ailsh and Loch Borralan complexes (Fig. 1) are potential 61 1 612 A . N . HALLIDAY E T A L . F%. 1. Map of NW Scotland showing localities...
Image
Simplified map of the Assynt Culmination, showing the major thrust structur...
Published: 01 January 2011
Fig. 2. Simplified map of the Assynt Culmination, showing the major thrust structures and the location of the Loch Ailsh and Loch Borralan plutons. CLT, Cam Loch Thrust. Dashed box indicates area of Figure 3 . Dashed line indicates location of section in Figure 4 .
Journal Article
Published: 01 August 2004
Mineralogical Magazine (2004) 68 (4): 541–559.
... are the alkaline Loch Borralan and Loch Ailsh syenite plutons. The Loch Borralan Pluton is in part silica undersaturated and highly potassic ( Woolley, 1970 ) whereas all units at Loch Ailsh are silica saturated and relatively sodic ( Parsons, 1965 ). Both plutons are Silurian in age: the Loch Borralan Pluton has...
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Simplified extract from the Assynt 1:50 000 geological map sheet ( British ...
Published: 01 January 2011
Fig. 3. Simplified extract from the Assynt 1:50 000 geological map sheet ( British Geological Survey 2007 ) showing the geology around the Loch Ailsh and Loch Borralan plutons. CLT, Cam Loch Thrust; ST, Sole Thrust; BMT, Ben More Thrust; MT, Moine Thrust.
Journal Article
Journal: Geosphere
Published: 14 May 2021
Geosphere (2021) 17 (4): 1126–1150.
..., that transported the whole complex westward above the Sole thrust sheet. Goodenough et al. (2011) also interpreted the ages of the Loch Ailsh pluton and the early suite of Borralan syenite (430.7 ± 0.5 Ma) as indicating emplacement before or during thrusting, and the late suite of Borralan (429.2 ± 0.5 Ma) as post...
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Journal Article
Published: 01 May 2012
Scottish Journal of Geology (2012) 48 (1): 73–76.
... formations and illustrations with some photographs, stratigraphic logs, cross-section and diagrams are useful supplements. The igneous rocks of the area are covered in a short section, with a table analysing the constituent units of the Loch Borralan and Loch Ailsh plutons, and the dykes and sills...
Journal Article
Published: 22 February 2013
Geological Magazine (2013) 150 (5): 783–800.
... of a wider suite of high Ba–Sr plutons that occur across the Northern Highlands (Tarney & Jones, 1994 ). Petrographically, these igneous complexes can be divided into a western zone (syenite-dominated complexes, e.g. Glen Dessarry, Loch Loyal, Loch Borralan and Loch Ailsh...
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Journal Article
Published: 01 August 2004
Mineralogical Magazine (2004) 68 (4): 716.
... geological map showing access routes and 1:25,000 maps of five of the shorter walks (Knockan Crag, Traligill Caves, the Bone Caves, Clachtoll and Achmelvich). After a brief introduction to the rocks exposed in the area (including the only mention of the syenites of the Loch Ailsh and Loch Borralan plutons...
Journal Article
Published: 01 April 1990
Journal of the Geological Society (1990) 147 (2): 259–269.
... an ancient U-depleted source. Feldspar Pb data from Loch Ailsh are similar (Halliday et al. 1987) but these data may not be representative of the whole variety of rock types in the syenitic plutons. Nd isotope data in particular are essential in order to constrain the question of whether the mantle component...
Journal Article
Published: 24 November 2020
The Canadian Mineralogist (2020) 58 (5): 597–623.
...Rebekka Reich; Michael A. W. Marks; Thomas Wenzel; Gregor Markl ABSTRACT The alkaline Loch Borralan intrusion (Assynt Region, NW Highlands of Scotland) consists of a composite arrangement of several ultramafic to felsic plutonic rock bodies which were emplaced around 430 Ma into the Moine Thrust...
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Journal Article
Published: 01 November 2000
Geological Magazine (2000) 137 (6): 711–712.
...Sally A. Gibson Chapter 7 is concerned with the Late-Ordovician to Mid-Silurian alkaline intrusions of the Northwest Highlands. This contribution by I. Parsons provides accounts of the exotic and distinctive alkaline igneous rock types (e.g. grorudite) from the Lock Boralan and Loch Ailsh...
Journal Article
Published: 01 April 2004
Scottish Journal of Geology (2007) 40 (1): 83–92.
... is constrained mainly by radiometric ages on the alkaline igneous suite. The Loch Ailsh intrusion, which is cut by a Caledonian thrust, has yielded an age of 439 ± 4   Ma ( Halliday et al. 1987 ). The Loch Borrolan Complex, which appears to seal the Ben More Thrust ( Parsons & McKirdy 1983 ), is dated 430...
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Journal Article
Published: 01 July 2006
Journal of the Geological Society (2006) 163 (4): 579–582.
..., and in the vicinity of, the Naver and Skinsdale thrusts during amphibolite-facies metamorphism at 429–420 Ma ( Figs 2 and 3 ; Kinny et al . 2003 ; Kocks et al . 2006 ). Within the Moine Thrust Zone, the pre-thrusting Loch Ailsh syenite was emplaced at 439 ± 4 Ma ( Halliday et al . 1987 ) and the syn- to late...
FIGURES
Journal Article
Published: 01 December 1994
Journal of the Geological Society (1994) 151 (6): 945–954.
... of the Institute of Mining & Metallurgy (Section B: Applied Earth Science) 1985 94 58 65 Parsons I. The sub-surface shape of part of the Loch Ailsh intrusion, Assynt, as deduced from magnetic anomalies across the contact, with a note on traverses across the Loch Borralan complex Geo[ogical...
Journal Article
Published: 01 May 2001
Journal of the Geological Society (2001) 158 (3): 521–534.
..., at Corryachvrail, Loch Airighe Bheg and in Strath Brora ( Fig. 1b). Lamprophyres cross-cut the pluton, in the typical NW–SE trend. With a possible small temporal overlap, but extending to significantly younger ages, a number of granitic plutons was emplaced, the Newer Granites of Read (1961). Though...
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Journal Article
Published: 12 June 2020
Journal of the Geological Society (2020) 177 (5): 893–910.
... be reasonable to invoke melting of mantle wedge sources during subduction to produce these magmas, as well as the c. 430 Ma syenite plutons of the Assynt Culmination in the Moine Thrust Zone and the Loch Loyal Syenite Complex ( Fig. 2 ; Goodenough et al. 2011 ). Various arguments have been employed...
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