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-   -   Is shale low or high metamorphic grade? (https://www.askmehelpdesk.com/showthread.php?t=757780)

  • Jul 11, 2013, 04:20 PM
    crawf309
    Is shale low or high metamorphic grade?
    I have to put the following rocks in order of increasing metamorphic grade: gneiss, phyllite, schist, shale, and slate. I know that from lowest to highest it goes- slate, phyllite, schist, and gneiss. However, because shale is a parent rock, I'm not sure where it fits in the order. Where does shale fit on the level of metamorphic grade?

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