Dinosaur Extinction: Meteorite or Volcano?

Summary of the article below: Meteorite or volcano? New clues to the cause of the dinosaurs’ extinction have been found. These clues directly support the meteorite-impact theory. The volcanic-eruption theory argues that intense volcanic activity on the Deccan Plateau released gases into the atmosphere and raised temperatures, causing the mass extinction at the end of the Cretaceous period. However, an examination of seafloor sediments shows that temperatures at the time of the mass extinction were lower than both before and after the extinction. The gas emissions had already stopped 200,000 years before the mass extinction. In other words, the volcanoes were not the direct cause of the mass extinction.

Meteorite or Volcano? New Clues to the Dinosaurs’ DemiseMeteorite or Volcano? New Clues to the Dinosaurs’ Demise