Beautiful pictures. Interesting facts about nature

Beautiful pictures. Interesting facts about nature

 

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Why rocks grow?

We are accustomed to the idea that the stones almost eternal and if change their appearance, only collapsing under some external influence. In fact, the formation of minerals, including rock-forming occurs continuously, i.e. it can be argued that the usual constant stones can grow …. The stumbling called any hard rock, Nonseparated water. Broadly, the stones can be attributed to the minerals — natural crystalline inorganic substances.

Depending on the energy processes of minerals can be divided into three groups. Most of the minerals formed by metamorphic processes deep within the Earth under high temperatures and pressures. So there are deep rocks.

Magmatic processes linked to the hardening of magma, consisting mainly of silicates, but at the same time containing all the known elements. Magma Crystallization produces a large amount of various minerals, and as this process is accompanied by a gradual decrease in temperature inside the main species there are new. The result is the so-called pegmatite veins — natural museum of mineralogy. In fractures of the crust into the already crystallized rocks penetrate volatile substances, which under the influence of pre-existing minerals are changing, creating new. That is within the granites formed greisens — particular rocks composed of quartz, mica, topaz and rare elements.

Exogenous mineralization processes related to external factors: atmospheric phenomena, variations in temperature, exposure to groundwater microorganisms, plants, and finally humans. Emerging as a result of supergene minerals are called, that is, re-formed. So come and «grow» salt-like minerals, limestone, chalk, and others.

Beautiful pictures

Beautiful pictures

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WINTER….

WINTER….

Cute, Funny Dogs pictures

Cute, Funny Dogs pictures

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funny pets, the funny thing about dogs,
dogs with funny inscriptions, funny animals to watch online,
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Watch funny animals , funny dogs photo,

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