BEIJING, Sept. 9 (Xinhua) -- Chinese scientists have discovered the world's first-known mountaintop impact crater in the country's northeastern region, according to the Center for High Pressure Science &Technology Advanced Research (HPSTAR) in Beijing.
With a diameter of 1,400 meters, the impact crater is located on the top of Baijifeng Mountain in the Baijifeng National Forest Park in Tonghua, Jilin Province. It is a cirque-shaped depression, with a height difference of about 400 meters from the highest rim to the lowest rim, said Chen Ming, a researcher at the HPSTAR.
Scientists believe it was formed by a bolide impact, which took place after the Jurassic Period. It explains the distribution of a large number of rock fragments composed mainly of sandstone, with a small amount of granite, on the top of Baijifeng Mountain as they were ejected from the impact crater during the impact event.
The formation of the impact crater also changed the original topography of Baijifeng Mountain, reforming its top into a double peak with elevations of 1,318 meters and 1,300 meters.
"Most asteroids impact Earth's surface, creating bowl-shaped craters or complex craters with center peaks," said Chen, adding that the discovery thus provides a new perspective for exploring the mechanisms of impact crater formation and the shock-metamorphic effects in unique terrains and landscapes.
Related articles:
Related suggestion:
A rural Ugandan community is a hot spot for sickle cell disease. But one patient gives hopeEight people reported killed in a shooting on the southern edge of Mexico CityHoist the pirate flag! St. Pauli promoted back to the BundesligaLotus Lantern Festival draws thousands in Seoul to celebrate upcoming Buddha's birthdayFlash floods and cold lava flow hit Indonesia’s Sumatra island, killing at least 15 peopleFrench star halts Eurovision rehearsal in Israel protestTaylor Wenczkowski scores in 3rd OT, Boston beats Montreal 2Former president Trump encourages foulA rural Ugandan community is a hot spot for sickle cell disease. But one patient gives hopeHundreds of prisoners set to be freed early to ease pressure on crowded jails
2.0574s , 6501.5078125 kb
Copyright © 2024 Powered by World's first mountaintop impact crater found in NE China ,Worldly Wisdom news portal