From: here@is.invalid   
      
   Study Puts Full Blame of Dinosaur Extinction Event on Asteroid, Not   
   Volcanoes   
      
   In a study published Thursday in the journal Science, researchers   
   analyzed well-preserved ocean drilling and global temperature records   
   to evaluate the impact of greenhouse outgassing by volcanic eruptions   
   millions of years ago. The team hoped to measure the effect this   
   volcanism in the Deccan Traps had on temperatures worldwide. What they   
   found shows that volcanic gases played a big role in supporting the   
   rise and success of different species after the extinction, rather   
   than causing the mass die-off.   
   ...   
   ...   
   The authors conclude this evidence proves that although Earth’s   
   climate underwent drastic change before the asteroid’s arrival, only   
   the impact coincided with the mass extinction event and volcanoes   
   weren’t to blame. Instead, the authors propose that the timing of this   
   outgassing would instead have brought on changes in the carbon cycle   
   that would allow the ocean to absorb massive quantities of the   
   released carbon dioxide. This would have had the effect of limiting   
   the global warming that would have otherwise been expected from   
   post-extinction Deccan volcanism, and promoted the rise of new life.   
      
   “Volcanism may have played a role post-extinction. After an   
   extinction, it takes a long time for an ecosystem to have the same   
   function – it could take half a million to a million years for   
   organisms to re-evolvle. The focus then has to do with the time it   
   takes for ecosystems to reassemble, and shows that volcanism can play   
   a role, and this study leaves both options open,” Hull said.   
      
   https://www.courthousenews.com/study-puts-full-blame-of-dinosaur   
   extinction-event-on-asteroid-not-volcanoes/   
      
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