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Answer:

Oceanic crust, extending 5-10 kilometers (3-6 kilometers) beneath the ocean floor, is mostly composed of different types of basalts. Geologists often refer to the rocks of the oceanic crust as “sima.” Sima stands for silicate and magnesium, the most abundant minerals in oceanic crust. (Basalts are a sima rocks.)

Explanation:

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maheshsinghmeenu

Explanation:

oceanic crust is generally made up of dark coloured rocks that are called basalts and gabbro.

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