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Morphology and U-Pb Ages of Zircons from the High-Grade Metamorphic Precambrian in the Sirdal-Oersdal Area, SW Norway

机译：来自挪威西南部sirdal-Oersdal地区高级变质前寒武纪的锆石形态和U-pb年龄

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The U-Pb systematics of seven suites of zircons and two apatites were investigated in an attempt to obtain data about the pre-Sveconorwegian geochronology. Very little was known about this earlier history, as previous studies have shown that the high-grade metamorphism has obliterated most of the older Rb-Sr record. Three samples were investigated from the augengneisses, two from the pyroxene syenites, one garnetiferous migmatite and one magnetite-ilmenite-zircon veinlet cross-cutting the charnockitic migmatites. (Atomindex citation 11:496634)

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Wielens, J. B. W.;
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年度 1979
页码 p.1-94
总页数 94
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
Apatites; Norway; Zircon; Age estimation; Isotope ratio; Lead 204; Lead 206; Lead 207; Magnetic susceptibility; Metamorphic rocks; Morphological changes; Uranium 235; Uranium 238;

机译：磷灰石;挪威;锆石;年龄估计;同位素比率;铅204;铅206;铅207;磁化率;变质岩;形态变化;铀235;铀238;

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Morphology and U-Pb Ages of Zircons from the High-Grade Metamorphic Precambrian in the Sirdal-Oersdal Area, SW Norway

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