{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,4]],"date-time":"2025-10-04T14:27:07Z","timestamp":1759588027150},"reference-count":52,"publisher":"Geological Society of London","issue":"2","license":[{"start":{"date-parts":[[2013,11,1]],"date-time":"2013-11-01T00:00:00Z","timestamp":1383264000000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-002"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["SJG"],"published-print":{"date-parts":[[2013,11]]},"abstract":"<jats:title>Synopsis<\/jats:title>\n          <jats:p>The Lewisian Gneiss Complex (LGC) of NW Scotland largely comprises Archaean tonalite\u2013trondhjemite\u2013granodiorite (TTG) gneisses variably reworked in the Palaeoproterozoic. One form of this heterogeneous reworking is the formation of major shear zones in the earliest Palaeoproterozoic which are then reactivated in the late Palaeoproterozoic. Recent remapping of the LGC of SE Barra, in the southern Outer Hebrides, has led to the interpretation of such a composite shear zone, the Southeast Barra Shear Zone (SBSZ). The SBSZ separates a block of heterogeneously overprinted pyroxene-bearing TTG gneisses from a dioritic meta-igneous complex to the west. Despite a lack of geochronological data, the juxtaposition of different protolith rocks along the SBSZ raises the possibility it may be a previously unrecognized terrane boundary.<\/jats:p>","DOI":"10.1144\/sjg2011-463","type":"journal-article","created":{"date-parts":[[2013,11,19]],"date-time":"2013-11-19T11:03:17Z","timestamp":1384858997000},"page":"93-103","source":"Crossref","is-referenced-by-count":3,"title":["The South Barra shear zone: A composite Inverian\u2013Laxfordian shear zone and possible Terrane boundary in the Lewisian gneiss complex of the Isle of Barra, NW Scotland"],"prefix":"10.1144","volume":"49","author":[{"given":"John M.","family":"MacDonald","sequence":"first","affiliation":[{"name":"School of Environmental Sciences, University of Liverpool, Liverpool L69 3GP, UK"},{"name":"Department of Earth Science and Engineering, Imperial College London, London SW7 2AZ, UK"}]},{"given":"Kathryn M.","family":"Goodenough","sequence":"additional","affiliation":[{"name":"British Geological Survey, Murchison House, West Mains Road, Edinburgh EH9 3LA, UK"}]}],"member":"1881","published-online":{"date-parts":[[2013,11,19]]},"reference":[{"key":"e_1_3_2_2_1","first-page":"165","volume-title":"Evolution of the Lewisian and Comparable Precambrian High-Grade Terrains","author":"Attfield P.","year":"1987","unstructured":"Attfield P. 1987. 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