Question

. В чем отличие океанической и континентальной земной коры?​

Answer 1

Ответ:

Главное отличие в их расположении и функции: материковая земная кора несёт на себе сушу, океаническая - воду. ... Материковая кора состоит из базальтового, гранитного и осадочного слоёв, океаническая - только из базальтного и осадочного. Океаническая кора более подвижная и может наслаиваться на материковую.

Answer 2

Ответ:

Главное отличие в их расположении и функции: материковая земная кора несёт на себе сушу, океаническая - воду. ... Материковая кора состоит из базальтового, гранитного и осадочного слоёв, океаническая - только из базальтного и осадочного. Океаническая кора более подвижная и может наслаиваться на материковую

Answer 3

Difference between Oceanic and Continental Crust

The Earth's crust is divided into two main types: oceanic crust and continental crust. These two types of crust differ in several key aspects. Let's explore the differences between oceanic and continental crust:

1. Composition: - Oceanic crust is primarily composed of basalt, a dark-colored volcanic rock that is rich in iron and magnesium. - Continental crust is mainly composed of granite, a light-colored igneous rock that is rich in silica and aluminum.

2. Thickness: - Oceanic crust is thinner compared to continental crust, with an average thickness of about 5-10 kilometers. - Continental crust is much thicker, with an average thickness of about 30-50 kilometers.

3. Density: - Oceanic crust is denser than continental crust due to its composition. The higher density is a result of the higher iron and magnesium content in basalt compared to granite. - Continental crust is less dense than oceanic crust due to its composition, which is lighter and contains more silica and aluminum.

4. Age: - Oceanic crust is relatively young, with most of it being less than 200 million years old. This is because oceanic crust is constantly being formed at mid-ocean ridges and destroyed at subduction zones. - Continental crust is much older, with some parts dating back billions of years. The continental crust has been preserved over long periods of time and is not actively destroyed like oceanic crust.

5. Geological Features: - Oceanic crust is characterized by features such as mid-ocean ridges, abyssal plains, and deep-sea trenches. These features are a result of the movement of tectonic plates and the formation of new oceanic crust at mid-ocean ridges and its destruction at subduction zones. - Continental crust is characterized by features such as mountains, plateaus, and plains. These features are a result of various geological processes, including tectonic activity, erosion, and deposition.

6. Distribution: - Oceanic crust covers about 71% of the Earth's surface and is found beneath the oceans. - Continental crust covers the remaining 29% of the Earth's surface and is found beneath the continents.

In summary, the main differences between oceanic and continental crust lie in their composition, thickness, density, age, geological features, and distribution. Oceanic crust is thinner, denser, younger, and primarily composed of basalt, while continental crust is thicker, less dense, older, and mainly composed of granite.

I hope this information helps! Let me know if you have any further questions.