Asteroid Dust Found in Crater Closes Case of Dinosaur Extinction.

[elleng]

'Researchers believe they have closed the case of what killed the dinosaurs, definitively linking their extinction with an asteroid that slammed into Earth 66 million years ago by finding a key piece of evidence: asteroid dust inside the impact crater.

The crater left by the asteroid that wiped out the dinosaurs is located in the Yucatán Peninsula. It is called Chicxulub after a nearby town. Part of the crater is offshore and part of it is on land. The crater is buried beneath many layers of rock and sediment. A 2016 mission led by the International Ocean Discovery Program extracted rock cores from the offshore portion of the crater.
Death by asteroid rather than by a series of volcanic eruptions or some other global calamity has been the leading hypothesis since the 1980s, when scientists found asteroid dust in the geologic layer that marks the extinction of the dinosaurs. This discovery painted an apocalyptic picture of dust from the vaporized asteroid and rocks from impact circling the planet, blocking out the sun and bringing about mass death through a dark, sustained global winter – all before drifting back to Earth to form the layer enriched in asteroid material that’s visible today.'

https://news.utexas.edu/2021/02/24/asteroid-dust-found-in-crater-closes-case-of-dinosaur-extinction/?

[JT45242]

1. Both asteroid and volcano is prevalent and makes sense

The relative survival of amphibians should have been more greatly affected if it was only the asteroid.

[roamer65]

2. I have a small vial of K-T boundary material.

It’s small, rounded glass-like pellets that formed during the impact and rained down to earth form the boundary layer.

Very historic material.

[Make7]

3. NOVA did an episode on the extraction of the rock cores a few years ago.

Day the Dinosaurs Died

https://www.youtube.com/watch?t=0&v=1OGjTG6NeeE
(53 minutes)

[Bayard]

4. Everyone knows what happened to the dinosaurs

[elleng]

5. ;)

[Duppers]

7. 😂

(Seemingly a person of many emojis here. )

[rickyhall]

6. I remember something about an iridium layer.

Then there was witnesses in the cartoon BC.