Occurrence and geochronology of the Eoarchean, ∼3.9<ce:hsp sp="0.25"/>Ga, Iqaluk Gneiss in the Saglek Block, northern Labrador, Canada: Evidence for the oldest supracrustal rocks in the world
作者: Masanori ShimojoShinji YamamotoShuhei SakataTakaomi D. YokoyamaKenshi MakiYusuke SawakiAkira IshikawaKazumasa AokiShogo AokiKeiko KoshidaTakayuki TashiroTakafumi HirataKenneth D. CollersonTsuyoshi Komiya
作者单位: 1Department of Earth Science and Astronomy, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo 153-8902, Japan
2Laboratory for Planetary Sciences, Kyoto University, Kitashirakawa Oiwakecho, Kyoto 606-8502, Japan
3Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2-12-1 O-okayama Meguro, Tokyo 152-8551, Japan
4School of Earth Sciences, The University of Queensland, Brisbane, Queensland, Australia
5HDR, 82 Eagle Street, Brisbane, 4000 Queensland, Australia
刊名: Precambrian Research, 2016, Vol.278 , pp.218-243
来源数据库: Elsevier Journal
DOI: 10.1016/j.precamres.2016.03.018
关键词: EoarcheanSupracrustal rocksGeochronologySaglek BlockThe oldest rockHadean
英文摘要: Abstract(#br)Understanding Earth’s early evolution requires decoding the cryptic geological record that is preserved in a few extremely rare terrains on Earth. The Saglek–Hebron Block in the North Atlantic Craton is one of the oldest terrains in the world. To better understand the Eoarchean history of the Saglek–Hebron Block, we undertook a comprehensive geological and geochronological investigation of this terrain. The Saglek–Hebron locality contains orthogneisses and supracrustal rocks, which are classified into two groups of the Eoarchean and Mesoarchean suites based on field associations defined by intrusion of the Mesoarchean mafic Saglek dykes. The Eoarchean suites contain the Nulliak supracrustal rocks and Uivak Gneisses. In this paper, we report cathodoluminescence (CL)...
全文获取路径: Elsevier  (合作)
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影响因子:4.441 (2012)

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关键词翻译
关键词翻译
  • geochronology 地质年代学
  • Ga 
  • northern 北方的
  • Canada 加拿大
  • world 世界