Yilan crater in Northeast China - 1.15-mile (1.85 km) wide

  • Thread starter Thread starter Astronuc
  • Start date Start date
  • Tags Tags
    China
AI Thread Summary
A NASA satellite has captured images of a 1.15-mile-wide impact crater located in Heilongjiang Province, China, first identified by researchers in 2019. Known locally as "Quanshan," this crater is the second confirmed impact structure in China and is characterized by a crescent shape due to erosion on its southern rim. The crater's rim reaches nearly 500 feet in height and is slightly larger than China's previously confirmed impact site, Xiuyan. Research indicates that the crater formed between 46,000 and 53,000 years ago, making it the largest crater under 100,000 years old. Evidence of its formation by an asteroid was found through drilling, which revealed melted stone, shocked quartz, and glass, confirming a high-temperature impact event. This discovery sheds light on the geological history of the region and its significance in the context of early human habitation in Asia.
Astronuc
Staff Emeritus
Science Advisor
Gold Member
Messages
22,340
Reaction score
7,138
https://www.msn.com/en-us/travel/ne...ve-asteroid-impact-crater-in-china/ar-AAUqr3C

In 2019, researchers first described a 1.15-mile-wide crater in a mountain range in northeast China; late last year, a NASA satellite imaged the crater from space, giving a broad new view the impact’s aftermath.

The crater is in Heilongjiang Province’s Yilan County. According to the researchers who described it in 2019, it’s the second confirmed impact structure in China. The site has long been known to locals, who call it “Quanshan,” or “circular mountain ridge,” according to a NASA Earth Observatory release.

The southern rim of the crater has eroded, so from above the impact site looks more like a crescent. The rim is nearly 500 feet tall at its highest points, the researchers reported, and is slightly wider than China’s previously confirmed impact structure, Xiuyan, which is 1.12 miles across.

Last year, a different team of researchers determined that the crater formed between 46,000 and 53,000 years ago, making it the largest crater less than 100,000 years old. They figured out that the crater was formed by an asteroid by drilling nearly 1,500 feet into its center, where they found melted stone, shocked quartz, and glass in the ancient sediments—evidence of a high-temperature blast. Radiocarbon dating of the shocked sediments gave researchers the surprisingly recent date.
 
  • Like
  • Informative
Likes davenn, 256bits and Oldman too
Earth sciences news on Phys.org
I saw the headline. Thanks for sharing the information.
50, 000 years ago.
Early human history - well not really, history is the written.
Wonder if my great, great, great, ... great grandfather/mother had any stories to tell about that event.
 
This archeology article confirms people living in Asia before and after the estimated crater forming events.
 
On August 10, 2025, there was a massive landslide on the eastern side of Tracy Arm fjord. Although some sources mention 1000 ft tsunami, that height represents the run-up on the sides of the fjord. Technically it was a seiche. Early View of Tracy Arm Landslide Features Tsunami-causing slide was largest in decade, earthquake center finds https://www.gi.alaska.edu/news/tsunami-causing-slide-was-largest-decade-earthquake-center-finds...
Hello, I’m currently writing a series of essays on Pangaea, continental drift, and Earth’s geological cycles. While working on my research, I’ve come across some inconsistencies in the existing theories — for example, why the main pressure seems to have been concentrated in the northern polar regions. So I’m curious: is there any data or evidence suggesting that an external cosmic body (an asteroid, comet, or another massive object) could have influenced Earth’s geology in the distant...

Similar threads

Replies
6
Views
3K
Replies
10
Views
10K
Back
Top