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Eduncle posted an MCQ
October 19, 2019 • 17:59 pm 0 points
  • IIT JAM
  • Geology (GG)

Match the metamorphic rocks in Group I with corresponding parent rocks in Group II.

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    Eduncle Best Answer

    Amphibolite is a rock of convergent plate boundaries where heat and pressure cause regional metamorphism. It can be produced through the metamorphism of mafic igneous rocks such as basalt and gabbro, or from the metamorphism of clay-rich sedimentary rocks such as marl or graywacke.
    When heat and pressure work on quartz-rich sandstone, the resulting hard metamorphic rock is called quartzite.
    Calcareous marls grade into clays, by diminution in the amount of lime, and into clayey limestones.

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