Infographic: How an asteroid killed the dinosaurs

asteroid impact changed the history of life
Image: Kunio Kaiho

The Cenozoic is the name geologists give to the era spanning the last 66 million years, and it started with the mass extinction event that killed off (most of) the dinosaurs. There were incredible eruptions that contributed to the extinction event and spanned a considerable amount of time.

But the asteroid that struck off the coast of what is the Yucatán Peninsula today was the opposite—it couldn’t have been much more sudden. A recent drilling project recovered a long core of rock from the Chicxulub impact crater, leading to greater clarity about how the calamity played out—including on that first day.

While 30% to 50% of the rock struck by the Chicxulub impactor was made up of evaporite deposits like salt and gypsum, almost none of that material is found in the core. That provides more support for the idea that these minerals were vaporized, sending massive amounts of sulfur into the atmosphere where it could form sunlight-blocking particles. Much of the rest of the bedrock was limestone, which would have released CO2, causing the long-term global warming that followed after the short-lived sulfur particles washed out of the atmosphere.

Related article:  Peering back in time: Engineered synthetic organisms could help answer key evolutionary questions

chicxulub drilling event day sequence x

Read full, original post: Here’s what happened in the impact crater the day it did in the dinos

Outbreak
Outbreak Daily Digest
Biotech Facts & Fallacies
Talking Biotech
Genetics Unzipped
Infographic: What are mRNA COVID-19 vaccines and how do they work?

Infographic: What are mRNA COVID-19 vaccines and how do they work?

As of 1 December 2020, thirteen vaccines have reached the final stage of testing: where they are being given to ...
favicon

Environmental Working Group: EWG challenges safety of GMOs, food pesticide residues

Known by some as the "Environmental Worrying Group," EWG lobbies ...
m hansen

Michael Hansen: Architect of Consumers Union ongoing anti-GMO campaign

Michael K. Hansen (born 1956) is thought by critics to be ...
News on human & agricultural genetics and biotechnology delivered to your inbox.
glp menu logo outlined

Newsletter Subscription

Optional. Mail on special occasions.
Send this to a friend