Q:

How does granite form?

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Quick Answer

As of 2014, geologists contend that granite is a plutonic rock resulting from deeply buried shale and sandstone that melted, partially melted or metamorphosed, depending on the category of granite in question. Igneous granite forcefully ripped through the Earth's crust, while metamorphic has no evidence of fluidity.

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How does granite form?
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Rhyolite, formed from granite and magma, only exists in the continental crust, especially in the mountains. It has not been found in any ocean. Eighty percent of granite is composed of large, coarse grains of potassium feldspar, sodium feldspar and quartz. During the late stages of cooling, hydrothermal solutions carried veins of gold, silver, zinc, lead and copper ores throughout the fissures, the fractures and along the periphery of the granite body.

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Related Questions

  • Q:

    What is the difference between shale and slate?

    A:

    Shale is a sedimentary rock while slate is a metamorphic rock formed from shale. Slate is much more durable than shale due to the metamorphic process it undergoes.

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  • Q:

    What is shale made of?

    A:

    Shale is made of silt and very fine minerals that settle to the bottom of a body of water to form a laminated rock. The materials that form silt are the same that form mud. While shale is a mudstone, the laminates create fissures that differentiate it from other mudstones.

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  • Q:

    How is shale formed?

    A:

    Shale forms from the pressure of layers of sediment compressing bits of silt that settle into the clay on the bottom of bodies of water. The compressed clay and silt become shale over time. Shale is a sedimentary rock.

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  • Q:

    What type of rock is shale?

    A:

    Shale is a sedimentary type of rock. Sedimentary rock is formed when tiny particles of sand, pebbles or other fragments of material gather in layers, hardening over time.

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