meta·so·ma·tism /-ˈsoməˌtɪzəm/
交代變質作用; 交代作用
Met·a·so·ma·tism n. Geol. An alteration in a mineral or rock mass when involving a chemical change of the substance, as of chrysolite to serpentine; -- opposed to ordinary metamorphism, as implying simply a recrystallization. -- Met*a*so*mat*ic a.
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