题目
GEL 020 001 FQ 2025 Quiz for Lecture 7 (10/15)
多重下拉选择题
Arc magmatism is the result of flux melting of the [选择] core mantle crust , which occurs when [选择] water flux salt is added, causing the rocks to partially melt. This melt then rises through the mantle and crust .
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标准答案
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思路分析
To tackle this question, I will address each blank in turn and explain why the provided choices fit or do not fit, drawing on basic igneous geochemistry.
First blank: arc magmatism is the result of flux melting of the ‑‑‑
- Core: This cannot be correct because flux melting in arc settings involves melts generated in the mantle due to volatile flux; the core is far removed from mantle melting processes and does not participate in crustal arc magmatism.
- Mantle: This is the correct choice. Flux melting in subduction zone arcs occurs when water and other volatiles fr......Login to view full explanation登录即可查看完整答案
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类似问题
Arc magmatism is the result of flux melting of the [选择] core mantle crust , which occurs when [选择] water flux salt is added, causing the rocks to partially melt. This melt then [选择] rises through the mantle and crust sinks through the mantle and crust .
Arc magmatism is the result of flux melting of the [选择] crust mantle core , which occurs when water is added, causing the rocks to partially melt. This melt then [选择] sinks through the mantle and crust rises through the mantle and crust .
How does magma form at subduction zones?
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