Question

What do you mean by oceanic crust and continental crust ?? explain it with the help of diagram.​

Answer 1

Answer:

The continental crust is made mostly of rocks with a composition similar to granite (a light-colored rock you would expect to find in the Sierra Nevada), whereas the oceanic crust is made mostly of rocks with a composition of basalt (a dark- colored rock, like the rocks that make up the Hawaiian volcanoes).

Answer 2

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What do you mean by oceanic crust and continental crust ?? explain it with the help of diagram.

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Oceanic crust :

⏩The uppermost layer of the oceanic portion of a tectonic plate.

⏩Oceanic crust is the uppermost layer of the oceanic portion of a tectonic plate.

⏩ It is composed of the upper oceanic crust, with pillow lavas and a dike complex, and the lower oceanic crust, composed of troctolite, gabbro and ultramafic cumulates.

⏩The crust overlies the solidified and uppermost layer of the mantle.

⏩The crust and the solid mantle layer together constitute oceanic lithosphere.

Continental crust :

⏩Layer of rock that forms the continents and continental shelves.

⏩Continental crust is the layer of igneous, sedimentary, and metamorphic rocks that forms the geological continents and the areas of shallow seabed close to their shores, known as continental shelves.

⏩This layer is sometimes called sial because its bulk composition is richer in silicates and aluminium minerals and has a lower density compared to the oceanic crust, called sima which is richer in magnesium silicate minerals and is denser.