Oceanic crust is dense, almost 3 grams per cubic centimeter (1.7 ounces per cubic inch).

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Oceanic crust is constantly formed at mid-ocean ridges, where tectonic plates are tearing apart from each other. As magma that wells up from these rifts in Earth’s surface cools, it becomes young oceanic crust. Oceanic crust is the crust layer found beneath the oceans and contains denser rock than the continental crust. Continental Crust The continental crust accounts for 40% of the surface of the Earth. It is made up of granite rock which is light in color. Track, manage and share all your dive data with the new ProPlus 4.0, Veo 4,0 and Geo 4.0 wrist and console computers. It is divided into oceanic and continental crust. Made by hand the old fashioned way; measuring by feel and experience rather than cups and weights. The oceanic crust is below the oceans which is 6 to 11 kilometers thick. Oceanic crust, the outermost layer of Earth’s lithosphere that is found under the oceans and formed at spreading centres on oceanic ridges, which occur at divergent plate boundaries. The oceanic crust is thinner than the continental crust. The crust is the outermost shell of a planet or the moon. This rock is rich in constituents like silicon, aluminum, and oxygen. It is composed of several layers, not including the overlying sediment. The crust of the planet Earth is composed of igneous, sedimentary and metamorphic rocks. Complete the following table: Types of Crust Oceanic Continental Thickness: Thickness: Made of: Made of: VIP #1: VIP #1 VIP #2: VIP #2: C. Tectonic Plates: -earth.html –only use the first 3 pages!! Oceanic crust is about 6 km (4 miles) thick.

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The difference between oceanic and continental crust rock material is the density and explains why the oceanic crust is beneath the ocean's surface while continental crust can rise into the Earth's atmosphere in the form of mountain peaks.

Because oceanic crust is denser than continental crust, it sinks very slowly under the tectonic plates of the continents as it is pushed away from the mid-ocean ridges.