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   Scientists believe they have finally discovered the trigger for   
   the world’s biggest climate catastrophe. The catastrophe in   
   question took place around 252 million years ago. At the time,   
   the world was going through a “tumultuous period of rapid global   
   warming.”   
      
   Many previously believed that a volcanic eruption in Siberia was   
   the cause. However, new evidence shows that the climate of the   
   world was already changing. Researchers published a new study in   
   the journal Nature, which confirms several super-eruptions in   
   eastern Australia could have helped expedite the climate change   
   all those millions of years ago.   
      
   The researchers say that super-eruptions shook eastern Australia   
   between 256 and 252 million years ago. These super-eruptions   
   could have been a great primer for the massive climate change   
   that the world was going through at the time.   
      
   During these eruptions, researchers believe the eruptions spewed   
   massive amounts of gasses and ash into the atmosphere.   
   Greenhouse gas emissions have always been a leading cause of   
   rising global temperatures. The levels of gas that these   
   eruptions would have unleashed would have easily played a part   
   in the world’s biggest climate catastrophe.   
      
   The researchers say that the spread of the ash produced is   
   consistent with some of the largest volcanic eruptions that we   
   know of.   
      
   Evidence of catastrophic eruptions in Australia   
      
   Additionally, the researchers say that evidence of the   
   eruptions, and their source, can be found in the eroded remnants   
   of volcanoes preserved in the New England region of New South   
   Wales.   
      
   Further, as the researchers note, layers of light-colored   
   volcanic ash can be found buried in the sedimentary rock. They   
   found these layers across massive areas of New South Wales and   
   even Queensland. Even more intriguing, though, is the scale of   
   the super-eruptions. It makes sense that they would have been   
   big, especially if they helped cause the world’s biggest climate   
   catastrophe.   
      
   The authors of the study believe that the volcanoes spewed at   
   least 150,000 km³ of material into northern New South Wales over   
   the course of those four million years. For comparison, the   
   deadly eruption of Mt. St. Helens in 1980 was roughly 1 km³ of   
   rock and material. Even the eruption of Mt. Vesuvius in 79AD   
   would have only been around 3-4 km³.   
      
   The researchers involved in the study also published a detailed   
   article breaking down their findings on The Conversation. You   
   can read through their thoughts about the research directly. In   
   the article, they share even more information about how these   
   super-eruptions played a role in causing the world’s biggest   
   climate catastrophe to date.   
      
   Click here to read the full article.   
      
   https://news.yahoo.com/scientists-finally-know-triggered-biggest-   
   022400625.html   
      
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