How are lakes formed?
Often, being in nature, near crystal-clear lakes, we unwittingly think about where they come from. What are the lakes formed of and how? What types of lakes are there? What is water in them?
We will try to answer these questions in the article.
What is a lake?
The lake is an element of the hydrosphere, which is a natural reservoir. As a rule, the water in it fills the so-called lake bowl and has no connection with the sea or ocean. The lake is the object of studying the science of limnology. In addition, this concept exists in geography. The term “lake” here denotes a cup-shaped indentation of land, in which water accumulates.
How do lakes appear?
The origin of the lakes may be different. For example, tectonic lakes appeared due to the filling of cracks in the crust. This group includes Lake Baikal.
The lake can be glacial. Melting ice falls from the top of the mountain into the gorge and brings with it stones and earth. Closed with stones and earthy clumps, the outlet does not allow water to evaporate.As the ice melts, water remains and a lake arises. A typical example is Lake Arbersee, located at a mountainous foot.
Land lakes - the result of the collapse of the mountains or rocks. Water that does not have a way out of the recess formed remains, gradually turning into a lake. In this way, for example, the Sary Chelek lake appeared.
Reservoirs that belong to the group of craters, formed in the holes of extinct volcanoes and explosive tubes. As a rule, near such lakes you can find hot springs. A striking example is the Kylotoa - a reservoir located in Ecuador on the site of a western volcano in the Andes.
Types of lakes
As a rule, lakes are natural and artificial. In the first case, they are formed by natural means, while artificial lakes - the creation of man. The position of the water in the lake can be above ground and underground. Waters on the surface participate in the circuit, while groundwater does not take part in this. The presence of minerals in the water makes it possible to divide the lakes into fresh, ultrafresh, and also salty.
Now you know how lakes arise.
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