Precambrian Volcanism Compared to Mount Etna (image) Michigan Technological University Share Print E-Mail Caption Volcanoes emit a lot of carbon dioxide -- some much more so than others. Alkaline volcanoes like Mount Etna in Italy and Mount Erebus in Antarctica dwarf the carbon output of other volcanoes by 10 to 50 times. Credit Shawn Appel on Unsplash Usage Restrictions Creative commons license applies--Michigan Tech does not hold the copyright to this image. Seek permission from photographer on Unsplash Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.