{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T06:00:42Z","timestamp":1777615242390,"version":"3.51.4"},"reference-count":65,"publisher":"Geological Society of London","issue":"5","license":[{"start":{"date-parts":[[2013,7,24]],"date-time":"2013-07-24T00:00:00Z","timestamp":1374624000000},"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":[[2013,9]]},"abstract":"<jats:p>\n            Recent Ar\u2013Ar and U\u2013Pb zircon geochronology from across the British and Irish Caledonides has revealed a prolonged period of arc-ophiolite formation (\n            <jats:italic>c<\/jats:italic>\n            . 514\u2013464 Ma) and accretion (\n            <jats:italic>c<\/jats:italic>\n            . 490\u2013470 Ma) to the Laurentian margin during the Grampian orogeny. The Slieve Gallion Inlier of Northern Ireland, an isolated occurrence of the Tyrone Volcanic Group, records the development of a peri-Laurentian island arc\u2013backarc and its obduction to an outboard microcontinental block. Although a previous biostratigraphic age constraint provides a firm correlation of at least part of the volcanic succession to the Ca1 Stage of the Arenig (\n            <jats:italic>c<\/jats:italic>\n            . 475\u2013474 Ma), there is uncertainty on its exact statigraphic position in the Tyrone Volcanic Group. Earliest magmatism is characterized by light rare earth element (LREE) depleted island-arc tholeiite. Overlying deposits are dominated by large ion lithophile and LREE-enriched, hornblende-phyric and feldspathic calc-alkaline basaltic andesites and andesitic tuffs with strongly negative \u03f5Nd\n            <jats:sub>t<\/jats:sub>\n            values. Previously published biostratigraphic age constraints, combined with recent U\u2013Pb zircon geochronology and new petrochemical correlations, suggest that the Slieve Gallion Inlier is equivalent to the lower Tyrone Volcanic Group. Temporal and geochemical correlations between the Slieve Gallion Inlier and Charlestown Group of Ireland suggest that they may be part of the same arc system, which was accreted at a late stage (\n            <jats:italic>c<\/jats:italic>\n            . 470 Ma) in the Grampian orogeny. A switch from tholeiitic volcanism to calc-alkaline dominated activity within the Lough Nafooey Group of western Ireland occurred prior to\n            <jats:italic>c<\/jats:italic>\n            . 490 Ma, some 15\u201320 Myr earlier than at Tyrone and Charlestown.\n          <\/jats:p>\n          <jats:sec>\n            <jats:title>Supplementary materials:<\/jats:title>\n            <jats:p>\n              Sampling and geochemical results (major elements, loss on ignition, trace elements, REE and Nd isotopes) are available at\n              <jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"uri\" xlink:href=\"http:\/\/www.geolsoc.org.uk\/SUP18640\">www.geolsoc.org.uk\/SUP18640<\/jats:ext-link>\n              .\n            <\/jats:p>\n          <\/jats:sec>","DOI":"10.1144\/jgs2012-104","type":"journal-article","created":{"date-parts":[[2013,7,25]],"date-time":"2013-07-25T13:52:16Z","timestamp":1374760336000},"page":"737-752","source":"Crossref","is-referenced-by-count":10,"title":["Stratigraphic, geochemical and U\u2013Pb zircon constraints from Slieve Gallion, Northern Ireland: a correlation of the Irish Caledonian arcs"],"prefix":"10.1144","volume":"170","author":[{"given":"Steven P.","family":"Hollis","sequence":"first","affiliation":[{"name":"Ocean and Earth Science, National Oceanography Centre Southampton, University of Southampton, Waterfront Campus, European Way, Southampton SO14 3ZH, UK"},{"name":"CSIRO Earth Science and Resource Engineering, 26 Dick Perry Avenue, Kensington, Perth, WA 6151, Australia"}]},{"given":"Mark R.","family":"Cooper","sequence":"additional","affiliation":[{"name":"Geological Survey of Northern Ireland, Colby House, Stranmillis Court, Malone Lower, Belfast BT9 5BJ, UK"}]},{"given":"Stephen","family":"Roberts","sequence":"additional","affiliation":[{"name":"Ocean and Earth Science, National Oceanography Centre Southampton, University of Southampton, Waterfront Campus, European Way, Southampton SO14 3ZH, UK"}]},{"given":"Garth","family":"Earls","sequence":"additional","affiliation":[{"name":"16 Mill Road, Ballygowan, Newtownards BT23 6NG, UK"}]},{"given":"Richard","family":"Herrington","sequence":"additional","affiliation":[{"name":"Department of Mineralogy, Natural History Museum, London SW7 5BD, UK"}]},{"given":"Daniel J.","family":"Condon","sequence":"additional","affiliation":[{"name":"NERC Isotope Geosciences Laboratory, British Geological Survey, Kingsley Dunham Centre, Keyworth, Nottingham NG12 5GG, UK"}]}],"member":"1881","published-online":{"date-parts":[[2013,7,24]]},"reference":[{"key":"e_1_3_2_2_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-540-88558-0_3"},{"key":"e_1_3_2_3_1","volume":"06","author":"Beamish D.","year":"2007","unstructured":"Beamish D., Cuss R.J., Lahti M., Scheib C., Tartaras E. 2007. The Tellus airborne geophysical survey of Northern Ireland: Final processing report. British Geological Survey Internal Report, IR\/06\/136.","journal-title":"The Tellus airborne geophysical survey of Northern Ireland: Final processing report"},{"key":"e_1_3_2_4_1","doi-asserted-by":"publisher","DOI":"10.1130\/0091-7613(1980)8<492:AAOOBO>2.0.CO;2"},{"key":"e_1_3_2_5_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-540-88558-0_16"},{"key":"e_1_3_2_6_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-540-88558-0_17"},{"key":"e_1_3_2_7_1","volume":"97","author":"Cameron I.B.","year":"1997","unstructured":"Cameron I.B., Old R.A. 1997. Geology of the country around Cookstown, 1:50000 Geological Sheet 27 (Cookstown). Geological Survey of Northern Ireland, Technical Report, GSNI\/97\/7.","journal-title":"Geology of the country around Cookstown, 1:50000 Geological Sheet 27 (Cookstown)"},{"key":"e_1_3_2_8_1","first-page":"37","article-title":"The Lower Palaeozoic inlier of the Curlew Mountains anticline","volume":"61","author":"Charlesworth H.A.K.","year":"1960","unstructured":"Charlesworth H.A.K. 1960. The Lower Palaeozoic inlier of the Curlew Mountains anticline. Proceedings of the Royal Irish Academy, 61B, 37\u201350.","journal-title":"Proceedings of the Royal Irish Academy"},{"key":"e_1_3_2_9_1","first-page":"69","volume-title":"The Geology of Ireland","author":"Chew D.M.","year":"2009","unstructured":"Chew D.M. 2009. Grampian orogeny. In: , Holland C.H., Saunders A.D. (eds) The Geology of Ireland, 2nd edn. Dunedin Academic Press, Edinburgh, 69\u201393.","edition":"2"},{"key":"e_1_3_2_10_1","doi-asserted-by":"publisher","DOI":"10.1144\/0016-76492007-025"},{"key":"e_1_3_2_11_1","doi-asserted-by":"publisher","DOI":"10.1144\/0016-76492007-120"},{"key":"e_1_3_2_12_1","doi-asserted-by":"publisher","DOI":"10.1130\/B30139.1"},{"key":"e_1_3_2_13_1","doi-asserted-by":"publisher","DOI":"10.1144\/gsjgs.151.2.0329"},{"key":"e_1_3_2_14_1","doi-asserted-by":"publisher","DOI":"10.1017\/S0016756800015429"},{"key":"e_1_3_2_15_1","doi-asserted-by":"publisher","DOI":"10.1144\/0016-76492007-057"},{"key":"e_1_3_2_16_1","doi-asserted-by":"publisher","DOI":"10.1144\/0016-76492010-164"},{"key":"e_1_3_2_17_1","doi-asserted-by":"publisher","DOI":"10.1144\/jgs2012-098"},{"key":"e_1_3_2_18_1","doi-asserted-by":"publisher","DOI":"10.1017\/S0016756800064967"},{"key":"e_1_3_2_19_1","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.0505516102"},{"key":"e_1_3_2_20_1","series-title":"Geological Society, London, Special Publications","first-page":"55","volume-title":"Continental Tectonics","author":"Dewey J.F.","year":"1999","unstructured":"Dewey J.F., Mange M.A. 1999. Petrography of Ordovician and Silurian sediments in the western Irish Caledonides: tracers of a short-lived Ordovician continent\u2013arc collision orogeny and the evolution of the Laurentian Appalachian\u2013Caledonian margin. In: , Macniocaill C., Ryan P.D. (eds) Continental Tectonics. Geological Society, London, Special Publications, 164, 55\u2013107."},{"key":"e_1_3_2_21_1","doi-asserted-by":"publisher","DOI":"10.1029\/TC009i004p00887"},{"key":"e_1_3_2_22_1","doi-asserted-by":"publisher","DOI":"10.1038\/312115a0"},{"key":"e_1_3_2_23_1","doi-asserted-by":"publisher","DOI":"10.1144\/0016-764902-085"},{"key":"e_1_3_2_24_1","first-page":"19","article-title":"New light on the age of the Dalradian deformation and metamorphism in western Ireland","volume":"50","author":"Dewey J.F.","year":"1970","unstructured":"Dewey J.F., Rickards R.B., Skevington D.G. 1970. New light on the age of the Dalradian deformation and metamorphism in western Ireland. Norsk Geologisk Tidsskrift, 50, 19\u201354.","journal-title":"Norsk Geologisk Tidsskrift"},{"key":"e_1_3_2_25_1","doi-asserted-by":"publisher","DOI":"10.1017\/S001675680400891X"},{"key":"e_1_3_2_26_1","doi-asserted-by":"publisher","DOI":"10.1144\/0016-76492008-102"},{"key":"e_1_3_2_27_1","doi-asserted-by":"publisher","DOI":"10.1144\/gsjgs.156.6.1217"},{"key":"e_1_3_2_28_1","doi-asserted-by":"publisher","DOI":"10.1130\/0091-7613(1999)027<0027:SLCMAA>2.3.CO;2"},{"key":"e_1_3_2_29_1","volume-title":"Cookstown, Northern Ireland Sheet 27. Solid 1:50000","author":"GSNI","year":"1983","unstructured":"GSNI. 1983. Cookstown, Northern Ireland Sheet 27. Solid 1:50000. Ordnance Survey for the Geological Survey of Northern Ireland, Southampton."},{"key":"e_1_3_2_30_1","volume-title":"Draperstown. Northern Ireland Sheet 26. Solid and Drift Geology, 1:50000","author":"GSNI","year":"1995","unstructured":"GSNI. 1995. Draperstown. Northern Ireland Sheet 26. Solid and Drift Geology, 1:50000. British Geological Survey, Keyworth, Nottingham."},{"key":"e_1_3_2_31_1","unstructured":"GSNI. 2007. The Tellus project: Proceedings of the end-of-project conference Belfast October 2007. World Wide Web Address: http:\/\/www.bgs.ac.uk\/gsni\/tellus\/conference\/index.html."},{"key":"e_1_3_2_32_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-540-88558-0_2"},{"key":"e_1_3_2_33_1","doi-asserted-by":"publisher","DOI":"10.1144\/gsjgs.150.4.0669"},{"key":"e_1_3_2_34_1","doi-asserted-by":"publisher","DOI":"10.1038\/205352a0"},{"key":"e_1_3_2_35_1","first-page":"218","volume-title":"Proceedings of the Royal Irish Academy, Section B\u2014Biological, Geological and Chemical Science","volume":"41","author":"Hartley J.J.","year":"1933","unstructured":"Hartley J.J. 1933. The geology of north-eastern Tyrone and the adjacent portions of County Londonderry. Proceedings of the Royal Irish Academy, Section B\u2014Biological, Geological and Chemical Science, 41, 218\u2013285."},{"key":"e_1_3_2_36_1","doi-asserted-by":"publisher","DOI":"10.1017\/S0016756800097405"},{"key":"e_1_3_2_38_1","doi-asserted-by":"publisher","DOI":"10.1130\/B30619.1"},{"key":"e_1_3_2_39_1","doi-asserted-by":"crossref","unstructured":"Hollis S.P. Roberts S. et al. 2013. Evolution of the Tyrone ophiolite Northern Ireland during the Grampian\u2013Taconic orogeny: A correlative to the Annieopsquotch Ophiolite Belt of central Newfoundland? Journal of the Geological Society London (in press) http:\/\/dx.doi.org\/10.1144\/jgs2012-103.","DOI":"10.1144\/jgs2012-103"},{"key":"e_1_3_2_40_1","first-page":"187","article-title":"An Arenig\u2013Llanvirn age for the black shales of Slieve Gallion, County Tyrone","volume":"11","author":"Hutton D.H.W.","year":"1992","unstructured":"Hutton D.H.W., Holland C.H. 1992. An Arenig\u2013Llanvirn age for the black shales of Slieve Gallion, County Tyrone. Irish Journal of Earth Sciences, 11, 187\u2013189.","journal-title":"Irish Journal of Earth Sciences"},{"key":"e_1_3_2_41_1","first-page":"1889","article-title":"Precision measurements of half-lives and specific activities of 235U and 238U","volume":"4","author":"Jaffey A.H.","year":"1971","unstructured":"Jaffey A.H., Flynn K.F., Glendenin L.E., Bentley W.C., Essling A.M. 1971. Precision measurements of half-lives and specific activities of 235U and 238U. Physics Press, C4, 1889\u20131906.","journal-title":"Physics Press"},{"key":"e_1_3_2_42_1","series-title":"Geological Association of Canada, Short Course Notes","first-page":"51","volume-title":"Trace element geochemistry of volcanic rocks: applications for massive-sulphide exploration","author":"Jenner G.","year":"1996","unstructured":"Jenner G. 1996. Trace element geochemistry of igneous rocks: geochemical nomenclature and analytical geochemistry. In: , Wyman D. (ed.) Trace element geochemistry of volcanic rocks: applications for massive-sulphide exploration. Geological Association of Canada, Short Course Notes, 12, 51\u201377."},{"key":"e_1_3_2_43_1","volume-title":"Geology of South Mayo: A geological description of South Mayo to accompany the bedrock geology, 1:100000 scale map series, sheet 11, South Mayo","author":"Long C.B.","year":"2005","unstructured":"Long C.B., McConnell B.J., Philcox M.E. 2005. Geology of South Mayo: A geological description of South Mayo to accompany the bedrock geology, 1:100000 scale map series, sheet 11, South Mayo. Geological Survey of Ireland, Dublin."},{"key":"e_1_3_2_44_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.chemgeo.2005.03.011"},{"key":"e_1_3_2_45_1","doi-asserted-by":"publisher","DOI":"10.1016\/0009-2541(94)00140-4"},{"key":"e_1_3_2_46_1","doi-asserted-by":"publisher","DOI":"10.1016\/0009-2541(86)90004-5"},{"key":"e_1_3_2_48_1","doi-asserted-by":"crossref","first-page":"89","DOI":"10.61153\/DDMS5114","volume-title":"Geology and Genesis of Mineral Deposits in Ireland","author":"O\u2019Connor P.G.","year":"1986","unstructured":"O\u2019Connor P.G., Poustie A. 1986. Geological setting of, and alteration associated with, the Charlestown mineral deposit. In: , Andrew C.J., Crowe R.W.A., Finlay S., Pennell W.M., Pyne J.F. (eds) Geology and Genesis of Mineral Deposits in Ireland. Irish Association for Economic Geology, Dublin, 89\u2013101."},{"key":"e_1_3_2_49_1","first-page":"167","volume-title":"The Geology of Scotland","author":"Oliver G.J.H.","year":"2002","unstructured":"Oliver G.J.H., Stone P., Bluck B.J. 2002. The Ballantrae Complex and Southern Uplands terrane. In: , Trewin N.H. (ed.) The Geology of Scotland, 4th edn. Geological Society, London, 167\u2013200.","edition":"4"},{"key":"e_1_3_2_50_1","first-page":"1389","article-title":"Regional fluid flow and gold mineralization in the Dalradian of the Sperrin Mountains, Northern Ireland","volume":"95","author":"Parnell J.","year":"2000","unstructured":"Parnell J., Earls G., et al. 2000. Regional fluid flow and gold mineralization in the Dalradian of the Sperrin Mountains, Northern Ireland. Economic Geology, 95, 1389\u20131416.","journal-title":"Economic Geology"},{"key":"e_1_3_2_51_1","series-title":"Shiva, Nantwich","first-page":"230","volume-title":"Continental Basalts and Mantle Xenoliths","author":"Pearce J.A.","year":"1983","unstructured":"Pearce J.A. 1983. Role of the sub-continental lithosphere in magma genesis at active continental margins. In: , Hawkesworth C.J., Norry M.J. (eds) Continental Basalts and Mantle Xenoliths. Shiva, Nantwich, 230\u2013249."},{"key":"e_1_3_2_52_1","first-page":"79","article-title":"A user\u2019s guide to basalt discrimination diagrams","volume":"12","author":"Pearce J.A.","year":"1996","unstructured":"Pearce J.A. 1996. A user\u2019s guide to basalt discrimination diagrams. In: , Wyman D. A. (ed.) Trace element geochemistry of volcanic rocks: applications for massive sulphide exploration. Geological Association of Canada Short Course Notes, 12, 79\u2013113.","journal-title":"Trace element geochemistry of volcanic rocks: applications for massive sulphide exploration"},{"key":"e_1_3_2_53_1","doi-asserted-by":"publisher","DOI":"10.1016\/0012-821X(73)90129-5"},{"key":"e_1_3_2_54_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF00375192"},{"key":"e_1_3_2_55_1","doi-asserted-by":"publisher","DOI":"10.1139\/E09-054"},{"key":"e_1_3_2_56_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-540-88558-0_13"},{"key":"e_1_3_2_57_1","doi-asserted-by":"publisher","DOI":"10.1144\/gsjgs.137.4.0443"},{"key":"e_1_3_2_58_1","doi-asserted-by":"publisher","DOI":"10.1130\/B26357.1"},{"key":"e_1_3_2_59_1","doi-asserted-by":"publisher","DOI":"10.1016\/0012-821X(84)90114-6"},{"key":"e_1_3_2_60_1","doi-asserted-by":"publisher","DOI":"10.1029\/2006GC001492"},{"key":"e_1_3_2_61_1","doi-asserted-by":"publisher","DOI":"10.1144\/gsjgs.156.6.1231"},{"key":"e_1_3_2_62_1","series-title":"Geological Society, London, Special Publications","first-page":"215","volume-title":"Ophiolites and Oceanic Lithosphere","author":"Thirlwall M.F.","year":"1984","unstructured":"Thirlwall M.F., Bluck B.J. 1984. Sr\u2013Nd isotope and geological evidence that the Ballantrae \u2018ophiolite\u2019, SW Scotland, is polygenetic. In: , Gass I.G., Lippard S.J., Shelton A.W. (eds) Ophiolites and Oceanic Lithosphere. Geological Society, London, Special Publications, 13, 215\u2013230."},{"key":"e_1_3_2_63_1","series-title":"Geological Society, London, Special Publications","first-page":"199","volume-title":"Lyell: The Past is the Key to the Present","author":"van Staal C.R.","year":"1998","unstructured":"van Staal C.R., Dewey J.F., Mac Niocaill C., McKerrow W.S. 1998. The Cambrian\u2013Silurian tectonic evolution of the northern Appalachians and British Caledonides: History of a complex, west and southwest Pacific-type segment of Iapetus. In: , Blundell D.J., Scott A.C. (eds) Lyell: The Past is the Key to the Present. Geological Society, London, Special Publications, 143, 199\u2013242."},{"key":"e_1_3_2_64_1","series-title":"Geological Society of America, Memoirs","doi-asserted-by":"crossref","first-page":"511","DOI":"10.1130\/2007.1200(26)","volume-title":"The 4D Framework of Continental Crust","author":"van Staal C.R.","year":"2007","unstructured":"van Staal C.R., Whalen J.B., et al. 2007. The Notre Dame arc and the Taconic Orogeny in Newfoundland. In: , Hatcher J., Carlson M.P., McBride J.H., Mart\u00ednez Catal\u00e1n J.R. (eds) The 4D Framework of Continental Crust. Geological Society of America, Memoirs, 200, 511\u2013552."},{"key":"e_1_3_2_65_1","doi-asserted-by":"publisher","DOI":"10.1016\/0009-2541(77)90057-2"},{"key":"e_1_3_2_66_1","doi-asserted-by":"publisher","DOI":"10.1016\/0012-821X(80)90116-8"},{"key":"e_1_3_2_67_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.tecto.2008.12.002"},{"key":"e_1_3_2_68_1","doi-asserted-by":"publisher","DOI":"10.1017\/S0016756809990434"}],"container-title":["Journal of the Geological Society"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.lyellcollection.org\/doi\/pdf\/10.1144\/jgs2012-104","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,7,24]],"date-time":"2024-07-24T12:49:10Z","timestamp":1721825350000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.lyellcollection.org\/doi\/10.1144\/jgs2012-104"},"secondary":[{"URL":"https:\/\/geoscienceworld.org\/jgs\/article-lookup?doi=10.1144\/jgs2012-104","label":"geoscienceworld"}]},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2013,7,24]]},"references-count":65,"journal-issue":{"issue":"5","published-online":{"date-parts":[[2013,8,29]]},"published-print":{"date-parts":[[2013,9]]}},"alternative-id":["10.1144\/jgs2012-104"],"URL":"https:\/\/doi.org\/10.1144\/jgs2012-104","relation":{},"ISSN":["0016-7649","2041-479X"],"issn-type":[{"value":"0016-7649","type":"print"},{"value":"2041-479X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2013,7,24]]}}}