Geology of Rum and the adjacent islands

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Authors:Emeleus, C. H.; Hudson, J. D.; Nicholson, P. G.; Steel, R. J.; Gallagher, M. J.; Peacock, J. D.; Bott, M. H. P.; Harmon, R. S.; Greenwood, R. C.; Boyce, A. J.
Author Affiliations:Primary:
University of Durham, Durham, United Kingdom
Other:
University of Leicester, United Kingdom
University of Wyoming, United States
British Geological Survey, United Kingdom
Scottish Research and Reactor Centre, United Kingdom
Source:170p. Availability: Br. Geol. Surv., Publ. Cent., London, United Kingdom. ISBN: 0 11 884517 9
Publication Date:1997
Note:In English. Includes seven appendices. 330 refs.Memoir for geol. sheet 60 (Scotland)
Summary:This new memoir updates the original The Geology of the Small Isles of Inverness-shire by Alfred Harker, published in 1908; thus it covers Eigg, Muck and Canna as well as Rum itself. All these islands have a basement of Lewisian gneisses overlain by Torridonian and Mesozoic sedimentary rocks. Tertiary igneous intrusions form the highest peaks on Rum; basaltic lavas make the flat-topped hills on Canna, Muck and Eigg, and the serrated ridge of the Sgurr of Eigg is formed by a pitchstone. The earliest volcanic activity was the basaltic and hawaiitic lavas on Eigg, Muck and SE Rum; these were followed by the development of the Rum central complex, which began with an early phase of caldera-controlled rhyodacitic ash flows and intrusions, together with collapse and explosion breccias and later granitic intrusions. Ring faults, basaltic dyke swarms and cone-sheets followed, before the final phase of the central complex which involved the intrusion of pulses of basaltic magma, some notably Mg-rich, to form the thick core of layered ultrabasic and gabbroic rocks. Numerous chemical analyses of selected rocks are tabulated in an appendix, together with Δ18O data. The whole memoir is to illustrate the published 1:50 000 geological map, but it itself profusely illustrated with coloured sketch-maps, sections and photographs. [R.A.H.]
Subjects:Areal geology; Cenozoic; Chromite ores; Genesis; Geophysical methods; Geophysical surveys; Gravity methods; Intrusions; Magmas; Mesozoic; Metal ores; Neoproterozoic; Precambrian; Proterozoic; Sedimentary rocks; Surveys; Tectonics; Torridonian; Upper Precambrian; Europe; Great Britain; Hebrides; Highland region Scotland; Inner Hebrides; Inverness-shire Scotland; Rhum; Scotland; United Kingdom; Western Europe
Coordinates:N565500 N570500 W0061500 W0063000
Abstract Numbers:98M/3032
Record ID:1999022407
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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