globalchange  > 影响、适应和脆弱性
DOI: 10.1007/s00531-013-0995-0
论文题名:
Geochronology of a composite granitoid pluton: A high-precision ID-TIMS U-Pb zircon study of the Variscan Karkonosze Granite (SW Poland)
作者: Kryza R.; Schaltegger U.; Oberc-Dziedzic T.; Pin C.; Ovtcharova M.
刊名: International Journal of Earth Sciences
出版年: 2014
卷: 103, 期:3
起始页码: 683
结束页码: 696
语种: 英语
英文关键词: Composite granitoid plutons ; ID-TIMS ; Karkonosze Pluton ; U-Pb zircon geochronology ; Variscan granitoids
Scopus关键词: geochronology ; granitoid ; Hercynian orogeny ; pluton ; uranium-lead dating ; zircon ; Karkonosze Mountains ; Poland ; Sudetes
英文摘要: Resolving time differences between successive magmatic pulses in composite granitoid plutons is often a difficult task. High-precision CA-ID-TIMS zircon ages obtained from such a pluton, the Variscan Karkonosze Granite (NE part of the Bohemian Massif), provide evidence that the crystallization of the two main granite facies, porphyritic and equigranular, happened between 312.5 ± 0.3 and 312.2 ± 0.3 Ma, thus unresolvable at the 0.08-0.1 % precision level of a single 206Pb/238U age. This finding is at odds with most other previous dating attempts and asks for a re-evaluation of the previous scattered geochronological data. The main reasons for the scatter of the earlier dates obtained by various techniques can include analytical causes, the presence of older inheritance and disturbance of the U-Pb isotopic system, due to zircon metamictization (enhanced by high-U content in zircon) or late- and post-magmatic alteration. © 2014 Springer-Verlag Berlin Heidelberg.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84896542815&doi=10.1007%2fs00531-013-0995-0&partnerID=40&md5=2f3aaa35b8908fa7d8b0cd0587dfd21a
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70383
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

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作者单位: Institute of Geological Sciences, University of Wrocław, Plac M. Borna 9, 50-204 Wrocław, Poland; Earth and Environmental Sciences, University of Geneva, rue des Maraîchers 13, 1205 Geneve, Switzerland; Département de Géologie, UMR 6524 CNRS, Université Blaise Pascal, 5 rue Kessler, 63 038 Clermont-Ferrand, France

Recommended Citation:
Kryza R.,Schaltegger U.,Oberc-Dziedzic T.,et al. Geochronology of a composite granitoid pluton: A high-precision ID-TIMS U-Pb zircon study of the Variscan Karkonosze Granite (SW Poland)[J]. International Journal of Earth Sciences,2014-01-01,103(3)
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