Set as Homepage - Add to Favorites

日韩欧美成人一区二区三区免费-日韩欧美成人免费中文字幕-日韩欧美成人免费观看-日韩欧美成人免-日韩欧美不卡一区-日韩欧美爱情中文字幕在线

【?? ?? ??】At the site of the dinosaur

When colossal asteroids rock Earth,?? ?? ?? it's not all doom and gloom.

The menacing asteroid that wiped out non-avian dinosaurs left a colossal marine crater in what's now the Yucatan Peninsula. But after analyzing deeply drilled rock core from the impact site created by the six-mile-wide asteroid, geologists have found compelling evidence that life soon thrived in the basin following the seismic episode.

The asteroid's impact stoked nutrients and chemicals to be released from beneath the seafloor, a process called hydrothermal activity. Similar activity naturally occurs today in the deep sea, where hydrothermal vents emit superheated chemical-rich fluid into the water, feeding unique colonies of life, including huge tubeworms, crabs, fish, microorganisms, and beyond.


You May Also Like

"This study reveals that impact cratering events, while primarily destructive, can in some cases also lead to significant hydrothermal activity,” Steven Goderis, a researcher at Vrije Universiteit Brussel in Belgium who co-authored the study, said in a statement. “In the case of Chicxulub, this process played a vital role in the rapid recovery of marine ecosystems.”

SEE ALSO: NASA dropped a new report. It's a wake-up call.

The research was published this week in the peer-reviewed journal Nature Communications.

Mashable Light Speed Want more out-of-this world tech, space and science stories? Sign up for Mashable's weekly Light Speed newsletter. By clicking Sign Me Up, you confirm you are 16+ and agree to our Terms of Use and Privacy Policy. Thanks for signing up!

The colossal impact event, which triggered a mass extinction event over much of Earth's land and ocean environments, also filled the present-day Gulf of Mexico with nutrients for at least700,000 years, the researchers concluded.

In the core drilled from the impact site, called "Chicxulub crater" (which you should Google for a novel Google-created search result), researchers found a ratio of the metallic element osmium that is associated with asteroid remnants. When the asteroid struck this region, its pulverized particles — which contained osmium — mixed beneath the seafloor and were emitted into the water, before eventually settling back down on the seafloor. When scientists drilled into the ocean bottom, they brought up this ancient seafloor, revealing that hydrothermal fluid containing asteroid remnants flowed into the gulf for hundreds of thousands of years.

The impact, which precipitated widespread hydrothermal activity, ultimately created a nutrient-rich oceanic bath, the researchers say.


Related Stories
  • NASA dropped a new report. It's a wake-up call.
  • Aliens haven't contacted us. Scientists found a compelling reason why.
  • The best telescopes for gazing at stars and solar eclipses in 2024
  • Webb telescope just snapped direct image of worlds many light-years away
  • If a scary asteroid will actually strike Earth, here's how you'll know
A graphic showing how the environment in the Chicxulub crater following the impact could have spawned rich hydrothermal activity in the enclosed Gulf of Mexico.A graphic showing how the environment in the Chicxulub crater following the impact could have spawned rich hydrothermal activity in the enclosed Gulf of Mexico. Credit: Sato et al. A gravity anomaly map of the Chicxulub crater in the Yucatan Peninsula.A gravity anomaly map of the Chicxulub crater in the Yucatan Peninsula. Credit: NASA Shuttle Radar Topography Mission

"After the asteroid impact, the Gulf of Mexico records an ecological recovery process that is quite different from that of the global ocean, as continuous hydrothermal activity has created a unique marine environment," Honami Sato, an earth scientist at Japan's Kyushu University who led the research, explained.

If such a cataclysmic event could create extremely habitable conditions on a region of Earth, the same might happen on other worlds, too. It could happen on ocean moons, or in a related way, perhaps even on desert worlds. Mars, for example, is a planet bombarded with meteor strikes. Such impacts could melt the plentiful water ice in parts of Mars' subsurface, creating an inviting environment for microbes to thrive.

The risks of an asteroid impact

Fortunately for us earthling land-dwellers, the odds of a cataclysmic space rock impact are exceedingly small. Here are today's general risks from asteroids or comets both tiny and very large. Importantly, even relatively small rocks can still be threatening, as the surprise 56-foot (17-meter) rock that exploded over Russia and blew out people's windows in 2013 proved.

  • Every single day about 100 tons of dust and sand-sized particles fall through Earth's atmosphere and promptly burn up.

  • Every year, on average, an "automobile-sized asteroid" plummets through our sky and explodes, according to NASA.

  • Impacts by objects around 460 feet (140 meters wide) in diameter occur every 10,000 to 20,000 years.

  • A "dinosaur-killing" impact from a rock perhaps a half-mile across or larger happens on 100-million-year timescales.

0.1648s , 9761.1328125 kb

Copyright © 2025 Powered by 【?? ?? ??】At the site of the dinosaur,Public Opinion Flash  

Sitemap

Top 主站蜘蛛池模板: 国产熟女系列丰满熟妇 | 2024国产成人精彩在线视频 | 丁香花视频在线播放免费观看 | 精品人妻无码一区二区三区9 | 色噜噜日韩精品欧美二区 | 成人无码视频在线观看网址 | 欧美色久 | 国产三级a三级三级野外 | 国产精品亚洲欧美大片在线看 | 精品国产av一区二区三 | 亚洲av无码高清不卡在线观看 | 久久亚洲综合国产精品99 | 波多野结衣亚洲av无码无在线观看 | 国产精品自拍亚洲 | 国产在线看片免费视频 | 国产91福利小视频在线观看 | 激情婷婷综合 | 亚洲欧美日韩综合精品 | 久久无码AV亚洲精品色午夜麻豆 | 成人a片国产无码免费视频在线观看 | 狠狠色精品中文字幕久久一区 | 亚洲欧美国产国产综合精品一 | 国产涩涩视频在线观看 | 亚洲日本va中文字幕久久 | 欧美AAAAAA级午夜福利视频 | 精品国产一区二区三区香蕉欧美 | 久久久中文字幕亚洲一区二区三区 | 亚洲国产日韩在线视 | 亚洲另类伦春色综合电影 | a级毛片在线观看av a级毛片在线免费 | 91欧洲在线视精品在亚洲 | 狼人亚洲国内精品自拍在线 | 国产乱伦免费视频 | 欧美日韩成人高清色视频 | 国产亚洲欧美精品永久 | 激情内射亚洲一区二区三区爱妻 | 无人区码一码二码三码在线 | 疯狂少妇2做爰中文字幕 | 国产乱伦在线视频 | 国产亚洲精品一区二区在线观看 | 二区三国产 |