Paleoproterozoic juvenile crust formation and stabilisation in the south-eastern West African Craton (Ghana); New insights from U-Pb-Hf zircon data and geochemistry

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• 作者：Sylvain Block^a ; ^{sylvain.block@gmail.com} ; Lenka Baratoux^a ; ^b ; Armin Zeh^c ; ^d ; Oscar Laurent^c ; ^e ; Olivier Bruguier^f ; Mark Jessell^g ; Laurent Ailleres^h ; Raymond Sagnaⁱ ; Luis A. Parra-Avila^g ; Delphine Bosch^f
• 关键词：Paleoproterozoic ; Granitoid ; West African Craton ; Zircon ; UPb-Hf isotopes ; Crustal evolution
• 刊名：Precambrian Research
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：287
• 期：Complete
• 页码：1-30
• 全文大小：10479 K
• 卷排序：287

文摘

New U-Pb-Hf data of igneous rocks from the Paleoproterozoic crust of northern Ghana. Juvenile crust production and reworking during ca. 300 Ma. Magmas derived from crustal (mafic + felsic) and enriched mantle sources. Three-step geodynamic evolution model ending with Eburnean orogeny. West African Craton made up of distinct crustal fragments amalgamated together.