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- Some facts about continental crust are12345:
- It is the layer of granitic, sedimentary, and metamorphic rocks that form the continents and the continental shelves.
- It is broadly granitic in composition and lighter than oceanic crust, which is basaltic.
- It covers 41 percent of the Earth’s surface, but a quarter of that area is under the oceans.
- It is typically 40 km thick, but varies from 6 to 80 km depending on the location.
- It is created and uplifted by plate tectonics, especially at convergent plate boundaries where mountains form.
- It contains the oldest rocks on Earth, dating back to four billion years.
Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.Continental crust is broadly granitic in composition and, with a density of about 2.7 grams per cubic cm, is somewhat lighter than oceanic crust, which is basaltic (i.e., richer in iron and magnesium than granite) in composition and has a density of about 2.9 to 3 grams per cubic cm. Continental crust is typically 40 km (25 miles) thick, while oceanic crust is much thinner, averaging about 6 km (4 miles) in thickness.www.britannica.com/science/continental-crustThe Earth’s crust is its lightest, most buoyant rock layer. Continental crust covers 41percent of the Earth’s surface, though a quarter of that area is under the oceans. The continental crust is 20 to 80 kilometers thick. Its rocks hold four billion years of Earth history. The remainder of the Earth is covered by oceanic crust.www.amnh.org/exhibitions/permanent/planet-earth/…The continental crust is the layer of granitic, sedimentary, and metamorphic rocks which form the continents and the areas of shallow seabed close to their shores, known as continental shelves. It consists mostly of feldspar and other sialic rocks. It is less dense than the material of the Earth's mantle, which consists of mafic rock.kids.kiddle.co/Continental_crustAs with oceanic crust, continental crust is created by plate tectonics. At convergent plate boundaries, where tectonic plates crash into each other, continental crust is thrust up in the process of orogeny, or mountain-building. For this reason, the thickest parts of continental crust are at the world’s tallest mountain ranges.www.nationalgeographic.org/encyclopedia/crust/What You Need To Know About Continental Crust
- The continental crust is that part of the crust that makes up the earth’s surface. ...
- The continental crust is made up of light-colored granite rocks full of substances like oxygen, aluminum, sodium, potassium and silicon.
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WEBNov 21, 2023 · Learn what continental crust is, where it is located, how it is formed, and how it differs from oceanic crust. Find out the elements, minerals, and rocks that make up the continental crust and its …
WEBThe average composition is granite, which is much less dense than the mafic igneous rocks of the oceanic crust. Because it is thick and has relatively low density, continental crust rises higher on the mantle than …
WEBOct 19, 2006 · The continental crust covers nearly a third of the Earth’s surface. It is buoyant—being less dense than the crust under the surrounding oceans—and is compositionally evolved, dominating the...
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