What is oceanic crust made of ? brainly
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Oceanic crust consist mainly of Basalt,rich in iron and magnesium. The continental crust consist mainly of Granite, rich in aluminum. They are both rich in oxygen and silicon, the rocks that compose the oceanic crust are of higher density than the rocks that compose the continental crust.
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It is composed of several layers, not including the overlying sediment. The topmost layer, about 500 metres (1,650 feet) thick, includes lavas made of basalt (that is, rock material consisting largely of plagioclase [feldspar] and pyroxene).
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