Australian scientists from the University of McCoori and the University of Tasmani revealed the secret of the origin of Hamburtsev Mountains, a giant mass of Alps in the center of Eastern Antarctica. The study was published scientifically magazine Letters of the World and Planet Sciences (EPSL).
The peaks and gums of the Hambursev Mountain series are hidden under the thickness of the ice and reach a few kilometers. This chain was opened by a Soviet campaign in 1958, but his geological dates remained mystery for a long time.
In a new study, scientists concluded that Gambursev’s assemblies formed more than 500 million as a result of the collision of tectonic plates that led to the formation of a super -continent Gondwan. In the depths of the hot rocks, the depths of the mountains, which led to a partial destruction, but protecting the powerful root systems of the Earth’s mantle began to move as a squeezed toothpaste.
To determine the age of the mountains, the researchers examined the small Zircon crystals from the sandstones put forward by ancient rivers. These minerals, which contain uranium marks, allowed us to correctly establish the chronology of the events: the mountains began to grow about 650 million years ago, reached the height of Himalaya 580 million years ago and then began to collapse due to tectonic processes.
Most mountain systems formed in the conflict of the continents are destroyed over time due to erosion or new tectonic changes. However, the Hambursev Mountains, protected by the ice shell, continue to be one of the best preserved ancient ridges on the planet.
Previously, scientists Showy The most detailed Antarctica relief map without ice cover.
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Source: Gazeta
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