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Continental and oceanic crust are both destroyed in subduction zones and lie atop Earth's mantle, though they differ in thickness, density, age and chemical composition. A subduction zone is an area of Earth's crust wher... More »

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The Earth's crust is it's outer layer. Continental crust is the surface that forms land masses, and oceanic crust is the surface found under the ocean floor. More »

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Oceanic crust is the portion of the Earth's crust that is found underneath the ocean floor. This part of the Earth's crust has a thickness of approximately 4 miles and is generally made up of denser types of rocks, such ... More »

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The continental crust is the outer layer of the Earth's surface, which consists of several types of rock. It is comprised of 15 tectonic plates that form the continents and their surrounding seabeds, which are called con... More »

www.reference.com Science Earth Science Layers of the Earth

The thickness of the Earth's crust varies with location and ranges from 1 to 80 kilometers thick. The continental crust is 50 kilometers thick on average, while the oceanic crust typically reaches no more than 20 kilomet... More »

www.reference.com Science Earth Science Layers of the Earth

The Department of Earth and Ocean Sciences at the University of British Columbia defines geology as the study of the Earth and its composition, which includes the crust. A geologist covers everything from studying the ti... More »

www.reference.com Science Earth Science Layers of the Earth

The most common rocks on top of oceanic plates are basaltic rocks, which are denser than ones found on continents; these are found on top of the oceanic plates because they are pieces of the oceanic plates that have been... More »

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