article_snippet.sent: And the researchers said that the amount of carbon added to the atmosphere to trigger the mass extinction was 'probably greater than today's fossil fuel reserves'.
article_snippet.sent: A huge impact event has been suggested as a possible cause of the mass extinction, based on the examination of grains of 'shocked quartz' and meteorite fragments in Antarctica, but no impact site has been found.
article_snippet.sent: One of the attractions of the theory is that the theory could have triggered other causes such as the Siberian Traps eruptions.
article_snippet.sent: The findings follow a similar study in 2013 by US scientists who simulated the Great Dying.
article_snippet.sent: Meteor impacts contributed to wiping out species during mass extinction events on Earth .
highlights_snippet.sent: From this Geologists could create a climate model to plot the mass extinction .
  