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:
My six nights in the Loire... for the price of a bottle of Sancerre: Here's how the homePerfect respite from eight million mopeds and motorbikes: Inside the Park Hyatt SaigonA trip that'll be frozen in my memory forever: I survivedWhat it's REALLY like to au pair for the uber rich: 24I took a trip on America's CHEAPEST cruisePlane passenger is left horrified by canoodling couple who spent entire fourWine in bed, skiing to the pubBrits warned of littleMillions of transparent blobI'm a former royal butler
3.7653s , 6500.4140625 kb
Copyright © 2024 Powered by World's first mountaintop impact crater found in NE China ,Culture Craft news portal