题目
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 [选择] rises through the mantle and crust sinks through the mantle and crust .

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标准答案
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思路分析
We start by identifying what the question is asking to fill in the blanks and what the correct conceptual chain is for arc magmatism in subduction settings. First blank: 'Arc magmatism is the result of flux melting of the ­­­ [core / mantle / crust]'. The correct body to melt via fluxing in subduction zones is the mantle, specifically the mantle wedge above the subducting slab. Core melting is not a factor in arc magmatism, a......Login to view full explanation

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