Resolving tectonic settings of ancient magmatic suites using structural, geochemical and isotopic constraints: the example of the St Peter Suite, southern Australia
作者: A. J. ReidM. J. PawleyC. WadeE. A. JagodzinskiR. A. DutchR. Armstrong
作者单位: 1Department of Energy and Mining , Geological Survey of South Australia , Adelaide , Australia
2;Department of Earth Sciences , University of Adelaide , Adelaide , Australia
3;Research School of Earth Sciences , Australian National University , Canberra , Australia
刊名: Australian Journal of Earth Sciences, 2020, Vol.67 (1), pp.31-58
来源数据库: Taylor & Francis Journal
DOI: 10.1080/08120099.2019.1632224
关键词: GeochemistryGeochronologyPetrogenesisIgneous rocksProterozoicIsotope geochemistry
原始语种摘要: Abstract(#br)Reconstructing ancient tectonic environments is inherently difficult and requires the integration of many datasets. Here we attempt to reconstruct the tectonic setting of a Proterozoic magmatic rock suite from the Archean to Mesoproterozoic Gawler Craton, South Australia. We evaluate previous models of subduction or non-subduction tectonics for the St Peter Suite through field observations coupled with geochemical and isotopic data. Field observations indicate the presence of mafic magma chambers, felsic plutons and zones of mixing represented by multiphase plutons and zones of magma transfer. Syn-magmatic and solid-state deformation fabrics suggest magmatism was associated with a compressional tectonic regime, at least during some stages of magmatism. Zircon U–Pb...
全文获取路径: Taylor & Francis  (合作)
影响因子:1.468 (2012)

  • magmatic 岩浆的
  • tectonic 构造的
  • isotopic 同位素置换
  • geochemical 地球化学的
  • magmatism 岩浆酌
  • subduction 俯冲
  • constraints 系统规定参数
  • ancient 古代的
  • zircon 锆石
  • continental 大陆的