Bameswarablogs -- The skin of the earth or the earth's crust is the outermost and densest layer is the lithosphere. The lithosphere is a rocky globe consisting of the earth's crust and outer mantle with an average thickness of 1,200 km.
The lithosphere is in the form of plates of the earth's crust, the plates of the earth's crust have 'swallowed' the vast oceans and moved the continents as far as thousands of kilometers, along with the occurrence of collisions and shifts when the activity of the movement of the earth's plates occurs. These plates then form the earth's surface.
The lithosphere always experiences a changing state, changes in the lithosphere caused by forces originating from outside the earth's surface are called exogenous, and from within the earth's surface are called endogenous.
The movement of the earth's plates can affect constant geographical changes, the movement of the earth's plates is caused by the ups and downs of the molten iron core from the earth's core. When plates collide, rocky landscapes can be lifted up to form mountain clusters like the Andes Mountains in Patagonia
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| Image life in the Andes mountain by Andes.org.pe |
Even the Andes mountains are mountains that formed longer. The Andes Mountains has recently been stated by Junal Geophysical Research Letters, that the mountain chain is estimated to be longer than previously thought.
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| Andes Mountain by Pixabay |
The Andes Mountains are the longest mountains in the world. The Andes range is over 4,500 miles (7,250 km) long, with a width of about 120 to 430 miles (190-690 km).
The Andes mountain range consists of a series of complex ranges that run parallel to the northern coast of Venezuela and the western flank of all of South America.
The Andes Mountains are thought to have formed from 6 to 20 million years ago, when large sections of the Earth's crust were separated in response to crustal thickening. When most of the arteries have separated, the rest of the crust has increased very rapidly.
To know when the mountain belt formed the main topographical features is important. This is useful in understanding the way the Andes formed, the early influences of global atmospheric circulation, and global climate.
Researchers from The University Of Bristol Skootlandia Scottish Universities Environmental Research Center and the University Of Arbendeen, carried out further investigations to find out, using a new method based on cosmic rays that creates a network form of helium (cosmogenic helium-3) a mineral on the surface. Earth. The abundance of cosmogenic helium-3, influenced by surface elevation, can be used to understand the history of rock elevation in the Andes.
The research team used rock as high as 1.2 miles in the arid western Andes as a medium for analysis. And these scientists have found that the area with this altitude has existed since 15 million years ago.
Lead researcher Dr Laura Evenstar, from the University of Bristol, said: "It seems very likely that the Andes had been rising slowly for at least 30 million years, and was the result of gradual crustal thickening."
"That means that the uplift of the Andes was probably influenced by large-scale atmospheric circulation patterns at least 4 million years than previously thought."
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