Geology of the world-class Kiaka polyphase gold deposit, West African Craton, Burkina Faso

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• 作者：Arnaud Fontaineup>aup>up> ; up>up>bup>up> ; up>up>arnaud.fontaine@ete.inrs.caup> ; Aur&eacute ; lien Eglingerup>cup>up> ; up>up>dup> ; Koumangdiwè ; Adaup>eup> ; Anne-Sylvie Andr&eacute ; -Mayerup>aup> ; Laurie Reisbergup>fup> ; Luc Siebenallerup>gup>up> ; up>up>hup> ; Elodie Le Mignotup>aup>up> ; up>up>fup> ; J&eacute ; rô ; me Ganneup>gup> ; Marc Poujolup>iup>
• 关键词：Orogenic gold deposit ; Eburnean orogeny ; Metamorphism ; Magmatism ; Birimian volcano-sedimentary belt ; U-Pb and Re-Os geochronology
• 刊名：Journal of African Earth Sciences
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：126
• 期：Complete
• 页码：96-122
• 全文大小：14728 K
• 卷排序：126

文摘

A geological framework for the Kiaka gold deposit is proposed for the first time. A U-Pb dating on zircon from a diorite intrusion gave a magmatic age of 2140 ± 7 Ma. Two stages of hydrothermal alteration and mineralization are recognized. D2-related shear zones control high-grade gold mineralization. A Re-Os dating on pyrrhotite (early-stage) gave an age of 2157 ± 24 Ma.