The birth of a cratonic nucleus: Lithogeochemical evolution of the 4.02-2.94 Ga Acasta Gneiss Complex
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- 作者：Jesse R. Reiminka ; jreimink@carnegiescience.edu" class="auth_mail" title="E-mail the corresponding author ; Thomas Chackoa ; Richard A. Sterna ; b ; Larry M. Heamana
- 关键词：Archean geodynamics ; Continental crust ; Acasta Gneiss Complex ; Iceland ; Oceanic plateau
- 刊名：Precambrian Research
- 出版年：2016
- 出版时间：August 2016
- 年：2016
- 卷：281
- 期：Complete
- 页码：453-472
- 全文大小：3948 K
文摘
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Here we present new mapping of the Acasta Gneiss Complex based on age and chemistry.
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The oldest components were formed in petrogenetic environments similar to Iceland.
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Typical Archean continental crust does not appear until 3.6 Ga.
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Zircon geochemistry indicates the involvement of surface waters.