Chicxulub crater - Wikipedia
It was formed slightly over 66 million years ago when an asteroid, about ten kilometers (six miles) in diameter, struck Earth. The crater is estimated to be 200 kilometers (120 miles) in diameter and 1 kilometer (0.62 miles) in depth.
The Chicxulub impact and its environmental consequences
2022年4月12日 · The Chicxulub crater’s asymmetric shape and size suggest an oblique impact and an impact energy of about 1023 joules, information that is important for quantifying the climatic effects of...
Size and morphology of the Chicxulub impact crater | Nature
1997年12月4日 · The precise size and morphology of the Chicxulub crater has been in dispute; it has been interpreted as a ∼ 180 km peak-ring crater 2,9,11, a ∼ 250 km peak-ring crater 5, 8, and a ∼ 300 km ...
What Happened the Day a Giant, Dinosaur-Killing Asteroid Hit the …
2019年9月9日 · When an asteroid the size of the Chicxulub impactor, estimated to be more than six miles wide, strikes a planet, material is ripped up from below the surface and tossed into the air,...
Chicxulub: The asteroid that killed the dinosaurs | New Scientist
The Chicxulub impactor, as it is called, was somewhere between 10 and 15 kilometres in diameter. The collision was devastating: rocks from deep within Earth’s crust were raised 25 kilometres...
New theory behind Chicxulub impactor that killed the dinosaurs
2021年2月15日 · The Chicxulub impactor, as it’s known, was a plummeting asteroid or comet that left behind a crater off the coast of Mexico that spans 93 miles and goes 12 miles deep. Its devastating impact brought the reign of the dinosaurs to an abrupt and calamitous end, scientists say, by triggering their sudden mass extinction, along with the end of ...
The Chicxulub Impact Produced a Powerful Global Tsunami
2022年10月4日 · The first global simulation of the Chicxulub impact tsunami demonstrates that it was much larger than any recent earthquake-generated tsunami, and that it was likely large enough to leave a mark on marine sediment records.
Assessments of the energy, mass and size of the Chicxulub Impactor
2014年3月19日 · However, the physical parameters of the impactor are not limited, so the aim of this study is to estimate the most relevant features of this one such as the size, mass and kinetic energy. We found that the kinetic energy of the impactor is in the range from 1.3e24 J to 5.8e25 J. The mass is in the range of 1.0e15 kg to 4.6e17 kg.
Chicxulub Impact Event - Lunar and Planetary Institute (LPI)
The primary thickness of the impact ejecta deposit is ~46 centimeters, as shown here, near the town of Beloc, Haiti. In other areas, the impact ejected materials appear to have been reworked by seafloor bottom currents, producing deposits up to 125 centimeters thick.
A steeply-inclined trajectory for the Chicxulub impact
2020年5月26日 · Comparison of 3D numerical simulations of Chicxulub-scale impacts with geophysical observations suggests that the Chicxulub crater was formed by a steeply-inclined (45–60° to horizontal)...