Metamorphic rocks Facts




  • Metamorphic rocks have been changed over time by extreme pressure and heat.

  • Metamorphic rocks can be formed by pressure deep under the
    Earth's surface, from the extreme heat caused by magma or
    by the intense collisions and friction of tectonic plates.

  • Uplift and erosion help bring metamorphic rock to the Earth's
    surface.

  • Examples of metamorphic rocks include anthracite, quartzite,
    marble, slate, granulite, gneiss and schist.

  • Anthracite is a type of coal with a high carbon count,
    few impurities and with a high luster (meaning it looks shiny).

  • Marble is a metamorphic rock that is formed from the
    sedimentary rock limestone.

  • Quartzite is a metamorphic rock that is formed from
    the sedimentary rock sandstone.

  • Slate is a metamorphic rock that is formed from the
    sedimentary rock mudstone.

  • Granulite is a metamorphic rock that is formed from
    the igneous rock basalt.