The Earth’s crust is a structural element of the structure of the Earth, it is a solid outer shell of the planet. Most of it is covered by the waters of the oceans, and the smaller part is the continents that are exposed to atmospheric influences. The remaining parts of the planet’s structure the upper and lower mantle, the outer and inner core, are under the crust. All these layers differ from each other in composition and properties. A peculiar division between the bark and the mantle is the border of Mokhorovichich (or the “Moho Border”), where the movement and acceleration of seismic waves is observed.
Composition and features of the earth’s crust
The crust of the Earth is quite similar to the bark of Venus and Mars, as well as the Moon and some other satellites of the planets. The uniqueness of the upper layer of the lithosphere is that there are two types:
There are transition subtypes between them subcontinent and suboceanic.
Scientists characterize the earth’s crust as a thin and fragile layer, which contains over ninety chemical elements that are unevenly distributed over the entire surface. Most of the (98%) are basalt, namely the following breeds:
Various rocks, minerals, as well as the sedimentary layer make up the remaining 2%. There are several types of breeds. Magmatic formed in the thickness of the Earth. Sedimentary occur in the process of rejection of the products of weathering and destruction of other breeds, precipitation of water, as well as their formation is affected by various organisms. Sedimentary species lie in layers, which allows you to learn about the natural conditions of the early periods of the existence of the planet. Sedimentary and magmatic rocks under the influence of high temperatures and pressure, as they come in the ground, turn into metamorphic rocks.
The temperature regime of the earth’s crust
The upper layer of the lithosphere heliometric has a temperature that is affected by the heat emitted by the sun’s rays. It has an approximate thickness of 30 meters. Then the layer is relatively stable in temperature. After it there is a geothermic layer that heats up from the inner heat of the Earth, and the deeper, the more the temperature rises.
Thus, the earth’s crust is part of the structure of the planet, which has its own structure. On the mainland and under water, the bark differs in composition and temperature, has its own characteristics. The upper layer of the lithosphere of minerals and rocks consists of, which people use as minerals.
