{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,17]],"date-time":"2025-09-17T16:44:24Z","timestamp":1758127464519,"version":"3.28.0"},"reference-count":0,"publisher":"Geological Society of London","issue":"1","license":[{"start":{"date-parts":[[1970,2,1]],"date-time":"1970-02-01T00:00:00Z","timestamp":2678400000},"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":["SJG"],"published-print":{"date-parts":[[1970,2]]},"abstract":"<jats:title>Synopsis<\/jats:title>\n          <jats:p>\n            Rb-Sr whole-rock isochrons for the Upper Zone of the Insch mass and aureole schists of the Haddo House mass indicate crystallisation of the basic sheet of NE. Scotland at 486\u00b1 17 m.y. ago (t\u00bd = 4.85 \u00d7 10\n            <jats:sup>10<\/jats:sup>\n            y. for Rb\n            <jats:sup>87<\/jats:sup>\n            ). It is argued that intrusion occurred into hot country rocks during, or very soon after, the migmatite overprint phase of the climax of regional metamorphism (M\n            <jats:sub>3<\/jats:sub>\n            ) in the Dalradian Series, so that this is also dated at about 486\u00b1 17 m.y. Small bodies of gneissose rocks in the Arnage mass give a whole-rock isochron age of 479\u00b1 12 m.y. and are interpreted as intrusions slightly younger than the Newer Gabbros. Post-metamorphic granites at Insch and Haddo House are dated at 459\u00b1 8 m.y.\n          <\/jats:p>\n          <jats:p>K-Ar mica ages from the gabbro complex are extremely uniform at 461 \u00b1 5 m.y., whereas Rb-Sr ages on some of the biotites range from 471 \u00b1 22 m.y. to 428 \u00b1 9 m.y. Together, these ages preclude the hypothesis of overprinting by any discrete metamorphic event younger than the main climax. Instead, they are interpreted as indicating rapid post-orogenic uplift in NE. Scotland at about 460 m.y. ago.<\/jats:p>","DOI":"10.1144\/sjg06010083","type":"journal-article","created":{"date-parts":[[2010,1,15]],"date-time":"2010-01-15T00:29:39Z","timestamp":1263515379000},"page":"83-107","update-policy":"http:\/\/dx.doi.org\/10.1144\/crossmark-policy","source":"Crossref","is-referenced-by-count":84,"title":["The geochronology of the basic igneous complexes"],"prefix":"10.1144","volume":"6","author":[{"given":"R. J.","family":"Pankhurst","sequence":"first","affiliation":[{"name":"Department of Geology and Mineralogy, University of Oxford"}]}],"member":"1881","published-online":{"date-parts":[[2022,6,7]]},"container-title":["Scottish Journal of Geology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.lyellcollection.org\/doi\/pdf\/10.1144\/sjg06010083","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,11,19]],"date-time":"2024-11-19T16:58:39Z","timestamp":1732035519000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.lyellcollection.org\/doi\/10.1144\/sjg06010083"},"secondary":[{"URL":"https:\/\/geoscienceworld.org\/sjg\/article-lookup?doi=10.1144\/sjg06010083","label":"geoscienceworld"}]},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1970,2]]},"references-count":0,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2009,11,10]]},"published-print":{"date-parts":[[1970,2]]}},"alternative-id":["10.1144\/sjg06010083"],"URL":"https:\/\/doi.org\/10.1144\/sjg06010083","relation":{},"ISSN":["0036-9276","2041-4951"],"issn-type":[{"type":"print","value":"0036-9276"},{"type":"electronic","value":"2041-4951"}],"subject":[],"published":{"date-parts":[[1970,2]]},"assertion":[{"value":"1969-02-01","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"1969-06-05","order":1,"name":"revised","label":"Revised","group":{"name":"publication_history","label":"Publication History"}},{"value":"2022-06-07","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}