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Retrieving "Epidote" from the archives

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  1. Caledonian Orogeny

    Linked via "Epidote"

    | Metamorphic Zone | Dominant Mineral Assemblage | Characteristic P-T Path | Crustal Depth Inference (km) |
    | :--- | :--- | :--- | :--- |
    | Greenschist Facies (Low Grade) | Chlorite, Actinolite, Epidote | Low P, Moderate T | $5 - 15$ |
    | Amphibolite Facies (Mid Grade) | Garnet, Staurolite, Kyanite | Moderate P, High T | $15 - 30$ |
    | [Granulite Facies](/entries/granulite…

  2. Gabbro

    Linked via "epidote"

    Alteration and Metamorphism
    Under moderate pressures and low temperatures, gabbro commonly undergoes saussuritization, a process where calcic plagioclase is altered to a fine-grained aggregate of epidote, zoisite, and albite. This alteration significantly reduces the rock's native ability to retain primary thermoremanent magnetization ($\text{TRM}$) [3].
    Under higher [metamorphic conditions](/entries/metamorphic-grade/…