Hydrothermal alteration - hydrometamorphism

Japanese: 熱水変質作用 - ねっすいへんしつさよう(英語表記)hydrometamorphism
Hydrothermal alteration - hydrometamorphism
The process of change that occurs in rocks under low temperature and pressure conditions. Synonymous with diagenesis. Includes processes such as cementation and recrystallization [Harker: 1889]. The alteration of rocks by the action of hydrothermal fluids [Watanabe, ed.: 1935].

Hydrothermal alteration

A general term for the process in which rocks are altered by hydrothermal action to produce new minerals.

Source: Asakura Publishing Dictionary of Petrology Information

Japanese:
岩石が低温低圧条件下で起こした変化過程.続成作用(diagenseis)と同義.膠結作用(cementatin)や再結晶作用などが含まれる[Harker : 1889].熱水液の作用で岩石が変質すること[渡辺編 : 1935].

熱水変質作用

熱水作用によって岩石が変質して新しい鉱物が生じる作用の総称.

出典 朝倉書店岩石学辞典について 情報

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