Unusual manganese enrichment in the Mesoarchean Mozaan Group, Pongola Supergroup, South Africa
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- 作者：Frantz Ossa Ossaa ; frantz.ossaossa@gmail.com" class="auth_mail" title="E-mail the corresponding author ; Axel Hofmanna ; Olivier Vidalb ; Jan D. Kramersa ; Georgy Belyanina ; Barbara Cavalazzia ; c
- 关键词：Manganese deposit ; Archean ; BIF ; 40Ar/39Ar dating ; Mozaan Group ; Pongola Supergroup
- 刊名：Precambrian Research
- 出版年：2016
- 出版时间：August 2016
- 年：2016
- 卷：281
- 期：Complete
- 页码：414-433
- 全文大小：10710 K
文摘
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BIF and ferruginous shale of the Mesoarchean Mozaan Group are enriched in manganese.
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Sedimentary Mn deposition took place in a shallow marine Mesoarchean oxygen oasis.
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Alteration under hydrothermal conditions gave rise to secondary Mn enrichment.
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Hypogene Mn-enrichment occurred between ca. 1500 and 1100 Ma related to the Namaqua-Natal orogeny.