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A general term applied to the processes of magma-rock reactions. Anatexis and assimilation can be regarded as end-products of the various process of syntexis. These might include fracturing of country rock during intrusion, engulfing of country-rock xenoliths in the magma, and thermal and/or fluid infiltration of xenoliths to initiate melting or solid-state reaction.

Subjects: Earth Sciences and Geography.

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