Fluid compositions very in different contact metamorphic processes depending on the fluid source, the features of sedimentary rocks and intrusive rocks.
接触变质过程流体成分有较大差异，主要取决于流体来源、原岩性质和侵入体特征。
The metamorphic complexes in the Jiaonan area are mainly Meso-proterozoic and Neo -proterozoic metamorphosed intrusive rocks.
胶南地区的变质杂岩主要由中、晚元古代的变质深成岩组成。
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