{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,11]],"date-time":"2026-03-11T12:12:44Z","timestamp":1773231164352,"version":"3.50.1"},"reference-count":61,"publisher":"Geological Society of London","issue":"3","license":[{"start":{"date-parts":[[2008,4,9]],"date-time":"2008-04-09T00:00:00Z","timestamp":1207699200000},"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":["JGS"],"published-print":{"date-parts":[[2008,5]]},"abstract":"<jats:p>\n            The Tyrone Central Inlier is a metamorphic terrane of uncertain affinity situated outboard of the main Dalradian outcrop (south of the Fair Head\u2013Clew Bay Line) and could represent sub-arc basement to part of the enigmatic Midland Valley Terrane. Using a combination of isotopic, structural and petrographic evidence, the tectonothermal evolution of the Tyrone Central Inlier was investigated. Sillimanite-bearing metamorphic assemblages (\n            <jats:italic>c<\/jats:italic>\n            . 670 \u00b0C, 6.8 kbar) and leucosomes in paragneisses are cut by granite pegmatites, which post-date two deformation fabrics. The leucosomes yield a weighted average\n            <jats:sup>207<\/jats:sup>\n            Pb\/\n            <jats:sup>206<\/jats:sup>\n            Pb zircon age of 467 \u00b1 12 Ma whereas the main fabric yields a\n            <jats:sup>40<\/jats:sup>\n            Ar\u2013\n            <jats:sup>39<\/jats:sup>\n            Ar biotite cooling age of 468 \u00b1 1.4 Ma. The pegmatites yield 457 \u00b1 7 Ma and 458 \u00b1 7 Ma Rb\u2013Sr muscovite\u2013feldspar ages and\n            <jats:sup>40<\/jats:sup>\n            Ar\u2013\n            <jats:sup>39<\/jats:sup>\n            Ar step-heating plateaux of 466 \u00b1 1 Ma and 468 \u00b1 1 Ma, respectively. The metasedimentary rocks yield Palaeoproterozoic Sm\u2013Nd model ages and laser ablation inductively coupled plasma mass spectrometry detrital zircon U\u2013Pb analyses from a psammitic gneiss yield age populations at 1.05\u20131.2, 1.5, 1.8, 2.7 and 3.1 Ga. Combined, these data permit correlation of the Tyrone Central Inlier with either the Argyll or the Southern Highland Group of the Dalradian Supergroup. The inlier was thus part of Laurentia onto which the Tyrone ophiolite was obducted.\n          <\/jats:p>","DOI":"10.1144\/0016-76492007-120","type":"journal-article","created":{"date-parts":[[2008,4,9]],"date-time":"2008-04-09T11:38:17Z","timestamp":1207741097000},"page":"675-685","source":"Crossref","is-referenced-by-count":52,"title":["The tectonothermal evolution and provenance of the Tyrone Central Inlier, Ireland: Grampian imbrication of an outboard Laurentian microcontinent?"],"prefix":"10.1144","volume":"165","author":[{"given":"D.M.","family":"CHEW","sequence":"first","affiliation":[{"name":"Department of Geology, Trinity College Dublin, Dublin 2, Ireland (e-mail: )"}]},{"given":"M.J.","family":"FLOWERDEW","sequence":"additional","affiliation":[{"name":"British Antarctic Survey, High Cross, Madingley Road, Cambridge CB3 0ET, UK"}]},{"given":"L.M.","family":"PAGE","sequence":"additional","affiliation":[{"name":"Department of Geology, Lund University, So\u0308lvegatan 12, 223 62 Lund, Sweden"}]},{"given":"Q.G.","family":"CROWLEY","sequence":"additional","affiliation":[{"name":"NERC Isotope Geoscience Laboratory, Kingsley Dunham Centre, Nottingham NG12 5GG, UK"}]},{"given":"J.S.","family":"DALY","sequence":"additional","affiliation":[{"name":"UCD School of Geological Sciences, University College Dublin, Belfield, Dublin 4, Ireland"}]},{"given":"M.","family":"COOPER","sequence":"additional","affiliation":[{"name":"Geological Survey of Northern Ireland, Colby House, Stranmillis Court, Belfast BT9 5BF, UK"}]},{"given":"M.J.","family":"WHITEHOUSE","sequence":"additional","affiliation":[{"name":"Laboratory for Isotope Geology, Swedish Museum of Natural History, S-104 05 Stockholm, Sweden"}]}],"member":"1881","published-online":{"date-parts":[[2008,4,9]]},"reference":[{"key":"e_1_3_2_1_1","doi-asserted-by":"publisher","DOI":"10.1017\/S0016756800009882"},{"key":"e_1_3_2_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.precamres.2006.11.004"},{"key":"e_1_3_2_3_1","doi-asserted-by":"publisher","DOI":"10.1130\/0016-7606(2001)113<0443:OICFTL>2.0.CO;2"},{"key":"e_1_3_2_4_1","doi-asserted-by":"publisher","DOI":"10.1144\/0016-764902-039"},{"key":"e_1_3_2_5_1","doi-asserted-by":"publisher","DOI":"10.1144\/16-764903-117"},{"key":"e_1_3_2_6_1","doi-asserted-by":"publisher","DOI":"10.1144\/0016-76492006-115"},{"key":"e_1_3_2_7_1","doi-asserted-by":"publisher","DOI":"10.1144\/0016-764903-012"},{"key":"e_1_3_2_8_1","doi-asserted-by":"publisher","DOI":"10.1144\/0016-76492007-025"},{"key":"e_1_3_2_9_1","doi-asserted-by":"publisher","DOI":"10.1144\/gsjgs.142.1.0097"},{"key":"e_1_3_2_10_1","first-page":"431","volume":"31","year":"1900","unstructured":"Cole, G.A.J., 1900. 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