Zircon U-Pb-Hf evidence for subduction related crustal growth and reworking of Archaean crust within the Palaeoproterozoic Birimian terrane, West African Craton, SE Ghana
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- 作者：A. Peterssona ; andreas.petersson@geol.lu.se" class="auth_mail" title="E-mail the corresponding author ; A. Schersté ; na ; A.I.S. Kempb ; B. Kristinsdó ; ttira ; P. Kalvigc ; S. Anumd
- 关键词：Birimian ; Crustal growth ; Eburnean orogeny ; Zircon ; Lu&ndash ; Hf ; U&ndash ; Pb
- 刊名：Precambrian Research
- 出版年：2016
- 出版时间：April 2016
- 年：2016
- 卷：275
- 期：Complete
- 页码：286-309
- 全文大小：10888 K
文摘
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Zircon U–Pb–Hf isotope data suggest mainly juvenile growth between 2.3 and 2.1 Ga.
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Reworking of Archaean crust in southern Ghana is confined to between 2.141 and 2.126 Ga.
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Combined isotope data suggest subduction related crustal growth.
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Emplacement of 2.23 Ga granodiorite contradict suggested plume initiated subduction.
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An evolutionary model is proposed.