An isotopic perspective on growth and differentiation of Proterozoic orogenic crust: From subduction magmatism to cratonization

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• 作者：Simon P. Johnson^a ; ^{simonpaul.johnson@dmp.wa.gov.au} ; Fawna J. Korhonen^a ; Christopher L. Kirkland^b ; John B. Cliff^c ; Elena A. Belousova^d ; Stephen Sheppard^e
• 关键词：Capricorn Orogen ; Cratonization ; Crustal differentiation ; Proterozoic orogenic crust ; Zircon-Hf isotopes ; Zircon-O isotopes
• 刊名：Lithos
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：268-271
• 期：Complete
• 页码：76-86
• 全文大小：1484 K
• 卷排序：268

文摘

Crustal growth and differentiation processes (‘cratonization’) highlighted by in situ zircon Hf and O isotopes. Zircon Hf and O isotopes reflect multi-component sources and shallow crustal processes associated with magma emplacement. Identified previously unknown crustal reservoir in the Capricorn Orogen. Crustal differentiation associated with an increase in the Th/U ratio of magmatic zircon. Cratonization process may lead to shallow parts of the crust more susceptible to reworking.