Soot blocked the sun for 1-2 years after K-Pg Event

[Simon]

https://phys.org/news/2017-08-dino-killing-asteroid-earth-years-darkness.html

Excerpt:

"Tremendous amounts of soot, lofted into the air from global wildfires following a massive asteroid strike 66 million years ago, would have plunged Earth into darkness for nearly two years, new research finds. This would have shut down photosynthesis, drastically cooled the planet, and contributed to the mass extinction that marked the end of the age of dinosaurs."

[PaleoMatt]

That is definetley one of the lower estimates I've heard. I've heard some say up to 500,000 years!

[stargatedalek]

That is definetley one of the lower estimates I've heard. I've heard some say up to 500,000 years!

500k years is just silly, anything over 5 years is a stretch but 1-2 definitely is the safe bet.