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  1. The crust is divided into two types: oceanic crust and continental crust. Oceanic crust, found under the ocean floor, is made of dense rocks such as basalt. It is about 7 kilometers (4 miles) thick. Continental crust, found under land masses, is made of less dense rocks such as granite.
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9y ago
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14y ago

Basalt makes up most of the oceanic crust. Granite makes up most of the continental crust. Both are igneous rocks, or rocks formed from volcanic activity.

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13y ago

ANSWER The crust beneath the ocean is called oceanic crust. Oceanic crust consists mostly of rocks such as basalt. Basalt (buh sawlt) is dark rock with a fine texture

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15y ago

basalt is the main in oceanic crust where else in continental crust it is granite

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15y ago

The oceanic crust is comprised mostly of solidified basaltic magma and is primarily basalt.

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11y ago

The oceanic crust is primarily composed of basalt and gabbro, covered with layers of sedimentary rock of varying thicknesses.

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Q: What is the main type of rock in oceanic crust?
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