The complex tectonic evolution of the craton-adjacent northern margin of the Palaeoproterozoic Ketilidian Orogen, southeastern Greenland: Evidence from the geochemistry of mafic to intermediate and granitic intrusions
作者: Leon BagasJochen KolbTroels F.D. NielsenDavid I. Groves
作者单位: 1Centre for Exploration Targeting, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
2Xi'an Center of China Geological Survey, 438 Youyi Road, Xi'an 710054, Shaanxi, China
3Karlsruhe Institute of Technology, Institute of Applied Geosciences, Department of Geochemistry and Economic Geology, Adenauerring 20b, 76131 Karlsruhe, Germany
4Geological Survey of Denmark and Greenland, Øster Voldgade 10, 1350 Copenhagen K, Denmark
5Orebusters Pty Ltd, Gwelup 6018, Western Australia, Australia
6State Key Laboratory of Geological Processes, and Mineral Resources, China University of Geosciences, Beijing 100083, China
刊名: LITHOS, 2020, Vol.358-359
来源数据库: Elsevier Journal
DOI: 10.1016/j.lithos.2020.105384
关键词: GreenlandArchaeanThrym ComplexPalaeoproterozoic Ketilidian OrogenPlate tectonics
原始语种摘要: Abstract(#br)The Archaean Thrym Complex, exposed in southeastern Greenland, is part of the North Atlantic Craton. Its southernmost part is in a transitional zone containing Archaean orthogneiss to the north, and Palaeoproterozoic paragneiss and granitic rocks to the south that are part of the Ketilidian Orogen. This 50 km wide transitional zone includes ca. 2830 Ma orthogneiss that is similar in age to orthogneiss in the central and northern parts of the complex, and ca. 2740 Ma orthogneiss that is synchronous with the ca. 2790–2700 Ma Skjoldungen Orogeny. A significant difference between this zone and the complex to the north is the presence of greenschist-facies sedimentary rocks unconformably overlying orthogneiss and intruded by ca. 1820–1800 Ma granitic and mafic to intermediate...
全文获取路径: Elsevier  (合作)
影响因子:3.779 (2012)

  • mafic 镁铁质的
  • granitic 花岗状的
  • orthogneiss 正片麻岩
  • geochemistry 地球化学
  • northern 北方的
  • craton 稳定地块
  • tectonic 构造的
  • southeastern 在东南的
  • complex 超群
  • paragneiss 副片麻岩