Planetary boundaries outline how far past pre-industrial conditions Earth can get before anthropogenic activity has ...

Sediments from Pacific Highs preserve vital information on past ocean warming, extinctions, and circulation shifts.

"Iridium only comes to Earth from meteoric impact, like the famous iridium anomaly at the Cretaceous-Paleogene boundary, so there's a limited amount," he said. "It's very expensive and certainly ...

This event occurred across the world and witnessed the loss of around 75 percent of all species of animals during a very narrow point of time – the boundary between the Cretaceous and Paleogene ...

The scientists analysed samples of the rock layer that marks the boundary between the Cretaceous and Paleogene periods. This period also saw the last major mass extinction event on Earth ...

Now, new chemical analyses of those rock layers, which mark the boundary between the Cretaceous and Paleogene periods (known as KPg), are helping to create a forensic profile of the killer asteroid.

While Tanis is 2,000 miles from the Chicxulub impact, seismic waves created a deposit of minerals known as the Cretaceous-Paleogene boundary. It is about four feet thick and corresponds to the event.

“One thing that we'd really like to know is, how did non-avian dinosaurs in the southern half of the world fare at the Cretaceous-Paleogene boundary?” One interesting aspect about the ...

or the Cretaceous-Paleogene boundary. But in the late 1970s, petroleum prospectors discovered evidence of a massive impact crater in the Yucatán that coincided chronologically with K-Pg extinction.

UW Professor Ellen Currano touches the Cretaceous-Paleogene boundary in the Denver Basin, where plant fossils are being collected as part of a project to better understand how and when life rebounded ...