Sunday, January 6, 2013
The history of Salar de Uyuni
Salar de Uyuni has old history.
Some topographical changes formed present Salar de Uyuni with spending very long time, since about 5,000,000 years ago.
The origin of Salar de Uyuni connected with the birth of Andes mountain range.
When Andes mountain range rose up in the Pliocene epoch, 2,580,000~5,000,000 years ago, a lot of seawater was remained on the top of the mountain.
The seawater became a prehistoric lake, Minchin lake. It was drying up gradually, at last, remained and was divided four lakes. Because of the Altiplano highland has a dry climate. The Altiplano highland has Salar de Uyuni as a part. Four lakes are UruUru lake, Poopo lake, Coipasa lake and Uyuni lake. They are salt flat.
The biggest lake is Salar de Uyuni in four lakes.
The soil around Salar de Uyuni contents a lot of salt. The salt of seawater which left behind to neighbor soil gathered in Salar de Uyuni through rain and the melted snow. In addition, Salar de Uyuni did not have river flow out water it has.
The water collected the flat highland. In the dry season, it dry up.
Of course, in the dry season of area around Uyuni, it is dry extremely for a dry climate, asa a result, Salar de Uyuni could not become deep lake and could get the recent style as the mirror of the sky that is said by people in the world.
The dry season comes to Uyuni, next the rainy season, the dry season again, this circulation was repeating long times, this salt lake was making this mysterious view.
Salar de Uyuni is called that it is buried salt of 1,000,000,000 ton and the place of production of good salt. These days salt is used as one of the income sources of people of the town of Uyuni these. Every year, salt of about 25,000 ton are dug and carried by local people. Salar de Uyuni have a part of one of industrial resources for local people.
There has various viewpoints that we should see.
For example, the color of salt lake is mysterious. To tell the truth, color of sea water change intensity more than fresh water. It has a relation to concentration of salt each water content. In this way, Salar de Uyuni can have the maximum value of chage of color. Because of there have some places are saturated with salt and the concentration of salt.
Salar de Uyuni change colors, shallow water is milky-white, deep water is dark blue, depending on the sun, lake changes red,bitter orange and so on.
History of various changes make recent Salar de Uyuni.
Wikipedia Salar de Uyuni http://en.wikipedia.org/wiki/Salar_de_Uyuni
Lifner net http://www.lifener.net/e3516032.html
All about 世界遺産 http://allabout.co.jp/gm/gc/66276/