distinguish between Continental Crust and Oceanic crust
Answers
Answer:
The first difference between the two layers comes in the composition of the rocks. The oceanic crust is mainly made out of dark basalt rocks that are rich in minerals and substances like silicon and magnesium. By contrast, the continental crust is made up of light-colored granite rocks full of substances like oxygen and silicon. The difference in composition between the mantle and the two layers of the crust is maintained by a process known as partial melting. Essentially, when a rock starts melting but doesn’t melt all the way, some minerals and substances are lost by the melting rock while others are retained. Consequently, the layer that is beneath the partially melted rock gains these new minerals and substances thus making that layer denser than the one above.
Another difference comes in the density of the two layers. From the descriptions, it is clear that the oceanic crust has a higher density than the more buoyant continental crust since the latter floats on top of the former. Getting into the technicalities, the continental crust has a density of around 3.0 g/cm3 compared to 2.6 g/cm3 of the continental crust. In addition, the continental crust is much thicker than the oceanic crust.
Explanation:
Answer:
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Explanation:
Continental Crust:The Continental Crust is below the Land mass, which is about 35 km thick.The main elements that make continental crust are silica and alumina which are also known as sial.
Oceanic Crust: The Oceanic Crust is below the Ocean which is about 5 km thick.The main elements which make oceanic crust are silica and magnesium and it is called sima.
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