Researchers claim for the first time that the Andes mountains in South America grew taller thanks to the arid climate

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Dr. Noah Brosh

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It is known that the mountains affect the climate, for example by stopping the flow of moist wind and diverting the rain clouds, but it is possible that sometimes there is also an opposite effect - of the climate on the mountains. Two researchers now claim that the Andes mountain chain in South America grew to heights of over 6,000 meters because of the arid climate that prevails in this part of the world.
According to the accepted theories, the surface of the earth is nothing but a solid and thin layer, floating on a viscous liquid layer (magma) in the depths of the earth. The solid layer is not uniform, but is made up of salts, which are identified with the continents and parts of the continents. The plates, which move independently over the surface of the magma, sometimes collide, and at the point of collision, mountains rise. Thus, for example, following the collision between the plate of the Asian continent and the plate of the Indian subcontinent, the Himalayan mountain chain grew.
But this explanation is not valid for the Andes mountain chain, the second highest on Earth. Instead, the South American plate rides on top of the Pacific plate, which is engulfed beneath it in the magma. That is, the plates do not collide, but rub against each other, in a way that causes the Andes mountains to rise. How does this relate to the weather? The two researchers, the British Simon Lamb and the American Paul Davis, claim in an article they published in the journal Nature, that the dry climate prevented a large accumulation of sediment where one plate rubbed against another. Drift acts like lubricating oil - when it does not exist, the friction between the plates is very great. If alluvium had accumulated between the plates, the Andes would have reached a height of only 2,000 meters. This process increased itself, because the growth of the mountains further prevented the rain from falling in the interior of the continent and thus the drift is even smaller, and God forbid.
Earth scientist - planet

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