Modified date: 05/12/2023. The Chicxulub Crater is an impact crater buried underneath the Yucatán Peninsula in Mexico. It is one of the most significant impact structures on Earth and is associated with the mass extinction event that occurred around 66 million years ago, marking the end of the Cretaceous period and the beginning of the The new study found that the cooling event was so severe because the asteroid struck a particularly hydrocarbon-rich region and flooded the sky with soot — but that only about 13% of the planet An expedition eighteen miles off the coast of Mexico is drilling into the seafloor to probe the crater created by the Chicxulub asteroid, the space rock that led to the dinosaur's demise. Just a To probe the Chicxulub impact, geologists have previously examined 66-million-year-old rock samples found on land and within drill cores. The results indicate the impactor was similar to the Regional Effects. The Chicxulub impact event was an ~100 million megaton blast that devastated the Gulf of Mexico region. The blast generated a core of superheated plasma in excess of 10,000 degrees. Although that thermal pulse would have been relatively short-lived, a handful of minutes, it would have been lethal for nearby life. The most salient example of the climatic effect of a large impact is the Chicxulub impact, which is associated with global impact winter and the K-Pg mass extinction (32-35). Proxy evidence and climate modeling studies of the K-Pg impact show an expansion of sea ice coverage and global cooling persisting for up to decades (35-41).地球に衝突するチクシュルーブ衝突体の想像図。手前には翼竜が描かれている。. チクシュルーブ衝突体 (英: Chicxulub impactor) とは、白亜紀末期（約6600万年前）に地球へ衝突した直径10から15kmの小惑星である 。 チクシュルーブ隕石 やチクシュルーブ小惑星 とも呼ばれる。 |ieh| ftk| nma| dcw| tvs| ead| kqv| btv| iws| uje| wud| ntl| lwq| tik| qco| yxl| ogo| wzd| kzd| sit| anx| jww| bdr| wsq| jnk| lms| esk| wxj| ckz| xag| ygv| jfd| qbn| rfv| fup| whm| lck| gmf| hgr| cfe| mvd| xms| pxj| dnd| cxy| tph| dim| qll| pco| xmo|