{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,9]],"date-time":"2026-07-09T02:55:05Z","timestamp":1783565705900,"version":"3.55.0"},"reference-count":37,"publisher":"Geological Society of London","issue":"4","license":[{"start":{"date-parts":[[1987,7,1]],"date-time":"1987-07-01T00:00:00Z","timestamp":552096000000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-002"}],"content-domain":{"domain":["www.lyellcollection.org"],"crossmark-restriction":true},"short-container-title":["JGS"],"published-print":{"date-parts":[[1987,7]]},"abstract":"<jats:p>The alkaline complexes of NW Scotland lie in a zone sub-parallel to the Moine thrust and represent the NW edge of the otherwise overwhelmingly calc-alkaline late-orogenic magmatism of the Caledonian fold-belt. The emplacement of intrusives in Assynt overlapped the thrust movements and new U-Pb zircon ages for the Loch Ailsh intrusion (439 \u00b1 4 Ma) provide are liable bracket, when combined with existing age data for the Loch Borralan intrusion (430 \u00b1 4 Ma), for the main movements on the Ben More thrust plane. A detailed history of the main tectonic and igneous events in the Moine Thrust Zone is tabulated. Zircons from the undeformed Cnoc-nan-Cuilean syenite, emplaced in Moine rocks near Loch Loyal, give an age of 426 \u00b1 9 Ma, in contrast to the deformed Glen Dessary syenite for which earlier work gave 456 \u00b1 5 Ma. The linear distribution of the alkaline complexes to the west of the calc-alkaline plutons, and the ultra-potassic character of the Loch Borralan complex (the most westerly), are consistent with, but do not prove, generation related to a W-dipping subduction zone. The persistence of the magmatism, over 30 Ma, in a belt being shortened by thrusting, suggests a source in the mantle lithosphere. The absence of magmatism further to the NW and the production of calc-alkaline magmas to the SE of this zone, is compatible with a model in which the thermal state of the lithosphere exercises the most important control on the nature of Late Caledonian magmatism.<\/jats:p>","DOI":"10.1144\/gsjgs.144.4.0611","type":"journal-article","created":{"date-parts":[[2007,12,20]],"date-time":"2007-12-20T22:39:02Z","timestamp":1198190342000},"page":"611-617","update-policy":"https:\/\/doi.org\/10.1144\/crossmark-policy","source":"Crossref","is-referenced-by-count":59,"title":["Syn-orogenic alkaline magmatism and its relationship to the Moine Thrust Zone and the thermal state of the Lithosphere in NW Scotland"],"prefix":"10.1144","volume":"144","author":[{"given":"A. 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P.","family":"DICKIN","sequence":"additional","affiliation":[{"name":"Isotope Geology Unit, Scottish Universities Research and Reactor Centre, East Kilbride, Glasgow G75 OQU, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M. R. W.","family":"JOHNSON","sequence":"additional","affiliation":[{"name":"Grant Institute of Geology, University of Edinburgh, West Mains Road, Edinburgh EH9, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1881","published-online":{"date-parts":[[2022,6,6]]},"reference":[{"key":"e_1_2_1_2_1","first-page":"309","article-title":"Volcanism, Earth degassing and replenished lithosphere mantle","volume":"297","author":"Bailey D. K.","year":"1980","unstructured":"Bailey D. 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