During our drive we saw many colors in the mountains. From blue-green to red-brown. I was wondering why these mountains have these colors, so I asked our tour guide – the best – Egdar to explain it to us.
These unique color ranges is a product of a complex geological history. There are mainly three reasons why these mountains have these colors. First it is caused by the movement of the tectonic plates. A long time ago the Nazca tectonic plate moved to the pacific plate, and that created the Andes mountain range from the ocean. Still there are tectonic movements, around 90 each year. The second reason these mountains have these colors is that the water in the rocks is dropping, creating marine sediments to move. The third reason is because the rocks contains iron. Iron gains and reduce oxygen and then it changes its color. The more red the rocks are the more oxygen it has, and it turns greener with less oxygen. This pheromone is called oxidation.
This colorful phenomenon is not the only one in Argentina, in fact it actually runs all the way along the Andes from Salta, Argentina through the Bolivian Altiplano and into Peru.
On half of our road trip we reached the highest point at 4650 meters high. I was feeling well, experienced no high altitude sickness. I was very pleased about that, a rookie like me from the lower lands reaching high altitudes with no problem.
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Great article and was a pleasure meeting you Jamie! Would never have known about that tour had it not been for you so muchas gracias ☺️ safe travels and keep it the blog posts!
Wow Jaimy !! What a nice article….i really enjoy reading it !