Evolution of Montviel alkaline-carbonatite complex by coupled fractional crystallization, fluid mixing and metasomatism — Part II: Trace element and Sm-Nd isotope geochemistry of metasomatic rocks: implications for REE-Nb mineralization
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- 作者：Olivier Nadeaua ; onadeau@uottawa.ca" class="auth_mail" title="E-mail the corresponding author ; R. Stevensonb ; M. Jé ; brakb
- 关键词：Alkaline and carbonatite magmas ; Fractional crystallization and metasomatism ; Magmatic-hydrothermal evolution ; Mantle pulses ; Sm&ndash ; Nd isotopes ; Rare earth element and Nb deposits
- 刊名：Ore Geology Reviews
- 出版年：2016
- 出版时间：January 2016
- 年：2016
- 卷：72
- 期：part_P1
- 页码：1163-1173
- 全文大小：1994 K
文摘
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A relative chronology of magmatic events was established based on field work and drill core relationships
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Representative metasomatized bulk rock samples were selected and analyzed for trace elements and Sm–Nd isotopes
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Based on these results it was shown that Montviel was emplaced via 4 distinct mantle pulses of volatile-saturated magmas
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It was found that each of these injections evolved by fractional crystallization, the mixing of mantle and crustal fluids, and metasomatism.