{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,18]],"date-time":"2025-12-18T23:56:37Z","timestamp":1766102197994,"version":"3.28.0"},"reference-count":49,"publisher":"Geological Society of London","issue":"2","license":[{"start":{"date-parts":[[2002,3,1]],"date-time":"2002-03-01T00:00:00Z","timestamp":1014940800000},"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":[[2002,3]]},"abstract":"<jats:p>\n            <jats:bold>Abstract:<\/jats:bold>\n            A revised pre-Jurassic chronology is presented for the Antarctic Peninsula on the basis of new U\u2013Pb zircon dating, using both conventional (11 samples) and SHRIMP microprobe data (10 samples). The age range for plutonism and high-grade metamorphism is from 435\u2009\u00b1\u20098\u2009Ma (Silurian) to\n            <jats:italic>c.<\/jats:italic>\n            206\u2009Ma (approximately the Triassic\u2013Jurassic boundary), with peaks of activity in Devonian, Carboniferous, Permian and mid-Triassic times, although some are represented by rocks with limited outcrops. The new data confirm the importance of Mid- and latest Triassic magmatic events, previously identified using Rb\u2013Sr geochronology. The Adie Inlet gneiss, previously thought to be Neoproterozoic, is recognized as a Permian migmatite derived from paragneiss with a provenance dominated by Cambrian granitoids. Granite gneiss from NW Palmer Land, previously dated as Cambrian, is shown to be Triassic. Detrital zircons in metasedimentary rocks, and inherited zircons in granitoids, are dominated by Mesoproterozoic to Cambrian components, with sparse Palaeoproterozoic to Archaean grains, suggesting sources within Gondwana. At times these sources were nearby, as shown by an Archaean cobble-sized granite clast from a Permo-Triassic conglomerate; another clast in the same conglomerate, previously thought to be Devonian in age, has an Ordovician crystallization age.\n          <\/jats:p>","DOI":"10.1144\/0016-764901-020","type":"journal-article","created":{"date-parts":[[2008,10,17]],"date-time":"2008-10-17T17:34:12Z","timestamp":1224264852000},"page":"145-157","update-policy":"http:\/\/dx.doi.org\/10.1144\/crossmark-policy","source":"Crossref","is-referenced-by-count":103,"title":["Basement chronology of the Antarctic Peninsula: recurrent magmatism and anatexis in the Palaeozoic Gondwana Margin"],"prefix":"10.1144","volume":"159","author":[{"given":"I. L.","family":"MILLAR","sequence":"first","affiliation":[{"name":"1British Antarctic Survey, c\/o NERC Isotope Geosciences Laboratory, Kingsley Dunham Centre, Keyworth, Nottingham NG12 5GG, UK"}]},{"given":"R. J.","family":"PANKHURST","sequence":"additional","affiliation":[{"name":"1British Antarctic Survey, c\/o NERC Isotope Geosciences Laboratory, Kingsley Dunham Centre, Keyworth, Nottingham NG12 5GG, UK"}]},{"given":"C. M.","family":"FANNING","sequence":"additional","affiliation":[{"name":"2PRISE, Research School of Earth Sciences, The Australian National University, Mills Roads, Canberra ACT 0201, Australia"}]}],"member":"1881","published-online":{"date-parts":[[2022,6,6]]},"reference":[{"key":"e_1_3_2_1_1","doi-asserted-by":"crossref","unstructured":"Adie R.J. 1962. The geology of Antarctica In: Wexler H. Rubin M.J. & Caskey J.E. (eds) Antarctic Research: the Matthew Fontaine Maury Memorial Symposium. American Geophysical Union Geophysical Monographs 7 26\u201339.","DOI":"10.1029\/GM007p0026"},{"key":"e_1_3_2_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/0025-3227(77)90045-7"},{"key":"e_1_3_2_3_1","doi-asserted-by":"publisher","DOI":"10.1130\/0091-7613(1979)7<374:MEOTAP>2.0.CO;2"},{"key":"e_1_3_2_4_1","first-page":"11","article-title":"Early Palaeozoic U\u2013Pb isotopic age for orthogneiss from north-western Palmer Land, Antarctic Peninsula","volume":"81","year":"1988","unstructured":"Harrison, S.M. & Loske, W.P. 1988. Early Palaeozoic U\u2013Pb isotopic age for orthogneiss from north-western Palmer Land, Antarctic Peninsula, British Antarctic Survey Bulletin, 81, 11\u201318.","journal-title":"British Antarctic Survey Bulletin"},{"key":"e_1_3_2_5_1","unstructured":"Harrison S.M. & Piercy B.A. 1992. Basement gneisses in north-western Palmer Land: further evidence pre-Mesozoic rocks in Lesser Antarctica In: Thomson M.R.A. Crame J.A. & Thomson J.W. (eds) Geological Evolution of Antarctica. Cambridge University Press Cambridge 341\u2013344."},{"key":"e_1_3_2_6_1","first-page":"23","article-title":"El complejo metam\u00f3rfico de Scotia en Cabo Lookout, Isla Elefante, Islas Shetland del Sur, Ant\u00e1rtica: evidencias de un metamorfismo cret\u00e1cico","volume":"31","year":"1984","unstructured":"Herv\u00e9, F., Marambio, F. & Pankhurst, R.J. 1984. El complejo metam\u00f3rfico de Scotia en Cabo Lookout, Isla Elefante, Islas Shetland del Sur, Ant\u00e1rtica: evidencias de un metamorfismo cret\u00e1cico, Serie Cient\u00cdfica, Instituto Ant\u00e1rtico Chileno, 31, 23\u201337.","journal-title":"Serie Cient\u00cdfica, Instituto Ant\u00e1rtico Chileno"},{"key":"e_1_3_2_7_1","unstructured":"Herv\u00e9 F. Loske W. Miller H. & Pankhurst R.J. 1992. Chronology of provenance deposition and metamorphism of deformed fore-arc sequences southern Scotia arc In: Thomson M.R.A. Crame J.A. & Thomson J.W. (eds) Geological Evolution of Antarctica. Cambridge University Press Cambridge 429\u2013435."},{"key":"e_1_3_2_8_1","unstructured":"Hole M.J. 1986. Time controlled geochemistry of igneous rocks of the Antarctic Peninsula. PhD thesis University of London."},{"key":"e_1_3_2_9_1","unstructured":"Hole M.J. Pankhurst R.J. Saunders A. J. 1991. Geochemical evolution of the Antarctic Peninsula magamatic arc: the importance of mantle-crust interactions during granitoid genesis In: Thomson M.R.A. Crame J.A. & Thomson J.W. (eds) Geological Evolution of Antarctica. Cambridge University Press Cambridge 369\u2013374."},{"key":"e_1_3_2_10_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF01822133"},{"key":"e_1_3_2_11_1","doi-asserted-by":"publisher","DOI":"10.1130\/0091-7613(1989)017<0324:LPTJSM>2.3.CO;2"},{"key":"e_1_3_2_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/0016-7037(73)90213-5"},{"key":"e_1_3_2_13_1","doi-asserted-by":"publisher","DOI":"10.1016\/0016-7037(82)90165-X"},{"key":"e_1_3_2_14_1","doi-asserted-by":"publisher","DOI":"10.1017\/S0016756800021464"},{"key":"e_1_3_2_15_1","unstructured":"Llamb\u00cdas E.J. Caminos R. & Rapela C.W. 1984. Las plutonitas y volcanitas del ciclo eruptivo gondw\u00e1nico In: Ramos V.A. (ed.) Geolog|$$|Aaia y Recursos Naturales de la Provincia de R|$$|Aaio Negro Relatorio del IX Congreso Geol\u00f3gico Argentino. Asociaci\u00f3n Geol\u00f3gica Argentina Buenos Aires 85\u2013117."},{"key":"e_1_3_2_16_1","first-page":"369","article-title":"U\u2013Pb and Rb\u2013Sr geochronology on conglomerate boulders from View point","year":"1991","unstructured":"Loske, W. & Miller, H. 1991a. U\u2013Pb and Rb\u2013Sr geochronology on conglomerate boulders from View point, Graham Land, Antarctic Peninsula. Abstracts, Sixth International Symposium on Antarctic Earth Sciences, Tokyo, National Institute of Polar Research, 369\u2013373.","journal-title":"Graham Land, Antarctic Peninsula. Abstracts, Sixth International Symposium on Antarctic Earth Sciences, Tokyo, National Institute of Polar Research"},{"key":"e_1_3_2_17_1","first-page":"374","article-title":"Rb\u2013Sr and U\u2013Pb geochronology of basement xenoliths at Cape Dubouzet, Antarctic Peninsula","year":"1991","unstructured":"Loske, W. & Miller, H. 1991b. Rb\u2013Sr and U\u2013Pb geochronology of basement xenoliths at Cape Dubouzet, Antarctic Peninsula, In: Abstracts, Sixth International Symposium on Antarctic Earth Sciences, Tokyo, National Institute of Polar Research, 374\u2013379.","journal-title":"In: Abstracts, Sixth International Symposium on Antarctic Earth Sciences, Tokyo, National Institute of Polar Research"},{"key":"e_1_3_2_18_1","unstructured":"Loske W. Herv\u00e9 F. Miller H. & Pankhurst R.J. 1997. Rb-Sr and U-Pb studies of the pre-Andean and Andean magmatism in the Horseshoe Island area Marguerite Bay (Antarctic Peninsula) In: Ricci C.A. (ed.) The Antarctic region: geological evolution and processes. Terra Antartica Publication Siena 353\u2013360."},{"key":"e_1_3_2_19_1","unstructured":"Ludwig K.R. 1989. PBDAT: a computer program for processing Pb-U-Th isotope data version 1.20. United States Geological Survey Open-file report 88-542."},{"key":"e_1_3_2_20_1","unstructured":"Ludwig K. 1999. Isoplot\/Ex a geochronological toolkit for Microsoft Excel vesion 2.31. Berkeley Geochronological Center Special Publications 1 Berkeley Geochronological Center 2455 Ridge Road Berkeley California 94709."},{"key":"e_1_3_2_21_1","doi-asserted-by":"publisher","DOI":"10.1144\/0016-764900-139"},{"key":"e_1_3_2_22_1","unstructured":"Miller H. 1983. The position of Antarctica within Gondwana in the light of Palaeozoic orogenic development In: Oliver R.L. James P.R. & Jago J.B. (eds) Antarctic Earth Science. Australian Academy of Science Canberra 579\u2013581."},{"key":"e_1_3_2_23_1","unstructured":"Milne A.J. 1990. The Pre-Mesozoic Geological Evolution of Graham Land. PhD thesis The Open University."},{"key":"e_1_3_2_24_1","doi-asserted-by":"publisher","DOI":"10.1144\/gsjgs.146.2.0207"},{"key":"e_1_3_2_25_1","doi-asserted-by":"publisher","DOI":"10.1130\/0016-7606(2000)112<611:MBLWAE>2.0.CO;2"},{"key":"e_1_3_2_26_1","first-page":"13997","article-title":"Precise U-Pb ages of Duluth Complex and related mafic intrusions, northeastern Minnesota: Geochronological insights to physical, petrogenetic, paleomagnetic, and tectonomagmatic process associated with the 1.1 Ga Midcontinent Rift System","year":"1993","unstructured":"Paces, J.B. & Miller, J.D. 1993. Precise U-Pb ages of Duluth Complex and related mafic intrusions, northeastern Minnesota: Geochronological insights to physical, petrogenetic, paleomagnetic, and tectonomagmatic process associated with the 1.1 Ga Midcontinent Rift System, Journal of Geophysical Research, 98B, 13997\u201314013.","journal-title":"Journal of Geophysical Research, 98B"},{"key":"e_1_3_2_27_1","doi-asserted-by":"publisher","DOI":"10.1144\/gsjgs.139.6.0701"},{"key":"e_1_3_2_28_1","unstructured":"Pankhurst R.J. 1983. Rb\u2013Sr constraints on the ages of basement rocks of the Antarctic Peninsula In: Oliver R.L. James P.R. & Jago J.B. (eds) Antarctic Earth Science. Australian Academy of Science Canberra 367\u2013371."},{"key":"e_1_3_2_29_1","first-page":"2529","article-title":"Geochronology and geochemistry of pre-Jurassic superterranes in Marie Byrd Land, Antarctica","year":"1998","unstructured":"Pankhurst, R.J., Weaver, S.D., Bradshaw, J.D., Storey, B.C. & Ireland, T.R. 1998. Geochronology and geochemistry of pre-Jurassic superterranes in Marie Byrd Land, Antarctica, Journal of Geophysical Research, 103B, 2529\u20132547.","journal-title":"Journal of Geophysical Research, 103B"},{"key":"e_1_3_2_30_1","doi-asserted-by":"publisher","DOI":"10.1093\/petrology\/41.5.605"},{"key":"e_1_3_2_31_1","unstructured":"Piercy B.A. & Harrison S.M. 1992. Mesozoic metamorphism deformation and plutonism in the southern Antarctic Peninsula: evidence from north-western Palmer Land In: Thomson M.R.A. Crame J.A. & Thomson J.W. (eds) Geological Evolution of Antarctica. Cambridge University Press Cambridge 381\u2013385."},{"key":"e_1_3_2_32_1","unstructured":"Ramos V.A. 1984. Patagonia: ?un continente paleozoico a la deriva? In: Actas del IX Congreso Geol\u00f3gico Argentino San Carlos de Bariloche.2 311\u2013325."},{"key":"e_1_3_2_33_1","unstructured":"Rapela C.W. 1999. El plutonismo Tri\u00e1sico-Jur\u00e1sico de la Patagonia In: Caminos R. (ed.) Geolog|$$|Aaia Argentina. Instituto de Geolog\u00cda y Recursos Minerales Anales 29 Subsecretar\u00cda de Miner\u00cda de la Naci\u00f3n Servicio Geol\u00f3gico Minero Argentino 364\u2013372."},{"key":"e_1_3_2_34_1","doi-asserted-by":"publisher","DOI":"10.1017\/S026359330000660X"},{"key":"e_1_3_2_35_1","unstructured":"Rapela C.W. Pankhurst R.J. Llamb\u00cdas E.J. Labud\u00cda C. & Artabe A. 1996. \u201cGondwana\u201d magmatism of Patagonia: inner Cordilleran calc-alkaline batholiths and bimodal volcanic provinces In: Third International Symposium on Andean Geodynamics St Malo Abstracts. ORSTOM editions colloques et seminaires Paris 791\u2013794."},{"key":"e_1_3_2_36_1","first-page":"49","article-title":"Geochronology in relation to the stratigraphy of the Antarctic Peninsula","volume":"43","year":"1976","unstructured":"Rex, D.C., 1976. Geochronology in relation to the stratigraphy of the Antarctic Peninsula, British Antarctic Survey Bulletin, 43, 49\u201358.","journal-title":"British Antarctic Survey Bulletin"},{"key":"e_1_3_2_37_1","doi-asserted-by":"publisher","DOI":"10.1017\/S0954102096000260"},{"key":"e_1_3_2_38_1","doi-asserted-by":"publisher","DOI":"10.1016\/0012-821X(75)90088-6"},{"key":"e_1_3_2_39_1","doi-asserted-by":"crossref","unstructured":"Storey B.C. Alabaster T. Hole M.J. Pankhurst R.J. & Wever H.E. 1992. Role of subduction plate boundary forces during the initial stages of Gondwana break-up: evidence from the proto-Pacific margin of Antarctica In: Storey B.C. Alabaster T. & Pankhurst R.J. (eds) Magmatism and the Causes of Continental Break-up. Geological Society London Special Publications 68 149\u2013163.","DOI":"10.1144\/GSL.SP.1992.068.01.10"},{"key":"e_1_3_2_40_1","doi-asserted-by":"publisher","DOI":"10.1029\/96TC00840"},{"key":"e_1_3_2_41_1","doi-asserted-by":"publisher","DOI":"10.1144\/gsjgs.139.6.0683"},{"key":"e_1_3_2_42_1","unstructured":"Thomson M.R.A. & Pankhurst R.J. 1983. Age of post-Gondwanian calc-alkaline volcanism in the Antarctic Peninsula region In: Oliver R.L. James P.R. & Jago J.B. (eds) Antarctic Earth Science. Australian Academy of Science Canberra 328\u2013333."},{"key":"e_1_3_2_43_1","unstructured":"Trouw R.A.J. Pankhurst R.J. & Ribeiro A. 1997. On the relation between the Scotia metamorphic complex and the Trinity Peninsula Group Antarctic Peninsula In: Ricci C.A. (ed.) The Antarctic Region: Geological Evolution and Processes. Terra Antartica Publication Siena 383\u2013389."},{"key":"e_1_3_2_44_1","doi-asserted-by":"publisher","DOI":"10.1016\/0895-9811(96)00032-6"},{"key":"e_1_3_2_45_1","doi-asserted-by":"publisher","DOI":"10.1144\/jgs.157.6.1243"},{"key":"e_1_3_2_46_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0012-821X(98)00054-5"},{"key":"e_1_3_2_47_1","doi-asserted-by":"publisher","DOI":"10.1016\/0895-9811(94)90035-3"},{"key":"e_1_3_2_48_1","doi-asserted-by":"publisher","DOI":"10.1017\/S095410209400060X"},{"key":"e_1_3_2_49_1","doi-asserted-by":"crossref","unstructured":"Williams I.S. 1998. U-Th-Pb geochronology by ion microprobe In: McKibben M.A. & Shanks W.C. (eds) Applications of microanalytical techniques to understanding mineralizing processes. Reviews in Economic Geology 7 1\u201335.","DOI":"10.5382\/Rev.07.01"}],"container-title":["Journal of the Geological Society"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.lyellcollection.org\/doi\/pdf\/10.1144\/0016-764901-020","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,11,19]],"date-time":"2024-11-19T13:07:40Z","timestamp":1732021660000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.lyellcollection.org\/doi\/10.1144\/0016-764901-020"},"secondary":[{"URL":"https:\/\/geoscienceworld.org\/jgs\/article-lookup?doi=10.1144\/0016-764901-020","label":"geoscienceworld"}]},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2002,3]]},"references-count":49,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2022,6,6]]},"published-print":{"date-parts":[[2002,3]]}},"alternative-id":["10.1144\/0016-764901-020"],"URL":"https:\/\/doi.org\/10.1144\/0016-764901-020","relation":{},"ISSN":["0016-7649","2041-479X"],"issn-type":[{"type":"print","value":"0016-7649"},{"type":"electronic","value":"2041-479X"}],"subject":[],"published":{"date-parts":[[2002,3]]},"assertion":[{"value":"2001-03-19","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2001-10-08","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2022-06-06","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}