echemi logo
Product
  • Product
  • Supplier
  • Inquiry
    Home > Chemicals Industry > Petrochemical News > The three main types of rocks that make up the earth's crust

    The three main types of rocks that make up the earth's crust

    • Last Update: 2023-03-27
    • Source: Internet
    • Author: User
    Search more information of high quality chemicals, good prices and reliable suppliers, visit www.echemi.com

    The Earth's crust is a nearly elliptical spherical body with a flat diameter of about 6300 km
    .
    The earth is divided into three parts of the crust, mantle and core by surface and interior, and their interfaces are 5 to 65 kilometers in different regions with different thicknesses of crustal depths, and the mantle is between the bottom surface of the earth's crust and a depth of about 2900 kilometers, from 2900 kilometers to the core
    of the earth.
    The Earth's crust is made up of three main types of rocks (often called stones), namely magmatic rocks, metamorphic rocks, and sedimentary rocks
    .
    Sedimentary rocks cover more than 60% of the surface area, and we see that the surface of many areas is soil or gravel, that is, the surface weathering shell formed by rock weathering, or newly deposited loose material
    .

    (l) magmatic rock: magmatic rock is a rock formed by magma condensation, magma is in a very deep underground, with huge pressure, under the tectonic movement of the earth's crust, it can seep along the crustal fissures to the upper layer of the earth's crust or directly erupt from the ground (volcanic eruption), due to the pressure drop, a large number of volatile substances in the magma escape, the temperature also gradually decreases, magma gradually condenses, crystallizes into magmatic rock
    .

    (2) Metamorphic rock: metamorphic rock is a new rock formed by metamorphosis of the original rock
    under the action of external conditions (temperature, pressure, etc.
    ).
    Common metamorphic rocks are Dali rock (which can be used as a decorative material) and quartzite
    .

    (3) Sedimentary rock: Sedimentary rock is the original host rock (magmatic rock, metamorphic rock and sedimentary rock) subjected to weathering and erosion, and the rock
    is formed by handling, sedimentation and diagenesis.
    Sedimentary rocks are the most important types of rocks
    that make up the surface of the earth's crust.
    It is rich in minerals, such as gold, silver, copper, iron, tin, etc.
    Most of them are stored in sedimentary rocks, and oil is also generated in sedimentary rocks, and most of them are stored in
    sedimentary rocks.

    This article is an English version of an article which is originally in the Chinese language on echemi.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to service@echemi.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

    Contact Us

    The source of this page with content of products and services is from Internet, which doesn't represent ECHEMI's opinion. If you have any queries, please write to service@echemi.com. It will be replied within 5 days.

    Moreover, if you find any instances of plagiarism from the page, please send email to service@echemi.com with relevant evidence.