Recently, scientists of the US space agency NASA have discovered the world’s largest crater within a million years in northeast China. This is the second impact crater discovered in China.
Crater is a round or almost round shaped crater on any celestial object which is made in an explosive manner.
It may have been formed by the eruption of a volcano; may have been formed by the impact of a meteorite falling from space; or it can also be formed through some other explosion inside the ground.
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There are many types of craters such as
Impact crater, which is formed when a small object collides with a large object at very high speed. For example, impact craters are formed when asteroids or meteorites collide.
Volcanic crater formed by volcanic eruptions.
Collapse crater, which is formed by an explosion under the ground, such as a nuclear test, etc. In this the ground sinks downwards. The Hindu Analysis.
Maar Crater, which is formed by the explosion of water mixed with boiling lava.
Bill crater, which is formed by the collapse of the roof of the cave or the gap below the ground.
Explosion crater, which is formed when debris from an underground explosion is thrown outwards, that is, the ground does not sink into it.
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The name of the new crater discovered in China is Yilan Crater. This crater was formed within about 1 lakh years. It is in Xiyuan County, China’s coastal province of Liaoning.
This crater with a diameter of about 1.85 km is made in the lower part of Jing’an mountain. Radiocarbon dating has shown that it was formed between about 46 thousand and 53 thousand years. This has been revealed from the investigation of charcoal and other organic matter present here.
Whatever study has been done about this crater has been published in the Science Journal named ‘Meteoretics and Planetary’.
The southern part of Yilan Crater is missing, making it look like a moon. It seems that something must have happened here that broke the wall of the pit.
Experts believe that this crater, which looks like the moon, is formed due to the collision of an asteroid or meteorite. So far, the record for the largest crater formed within a million years was named after Meteor Crater in Arizona, USA.
It was formed between 49 and 50 thousand years. Its diameter was 1.2 kilometers. Apart from this, there is another crater named Jiyuan in China, which is 1.8 kilometers in diameter, but its age has not been ascertained yet.
So far, about 190 craters present on Earth have been detected, which scientists have divided on the basis of age.
About 200 million years old ‘Vredefort Crater’ present in the Free State of South Africa is the largest and oldest crater in the world. Its diameter is about 380 km. UNESCO declared it a World Heritage Site in 2005.
In this article we mention all information about Yilan Crater -Today Current Affairs.
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