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            This is a file from the  Wikimedia Commons. Information from its  description page there is shown below.  Commons is a freely licensed media file repository.  You can help. 
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           | DescriptionVolcanic injection.svg | 
           
             English: Schematic of  volcano injection of  aerosols and gases. 
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           | Date | 
           15 September 2009 | 
          
          
           | Source | 
           Own work. Derived from     File:Volcanic injection.jpg by  SEWilco(en.wp), released under PD-USGov-Interior-USGS. Based on data from the  US Geological Survey. Coloured using  Inkscape.  
            
             
              
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               This  vector image was created with  Inkscape. | 
               
              
             
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           | Author | 
            cflm ( talk) | 
          
          
           Permission ( Reusing this file) | 
           
            
             
              | Public domainPublic domainfalsefalse | 
              
             
            
             
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              This image is in the  public domain because it contains materials that originally came from the  United States Geological Survey, an agency of the  United States Department of the Interior. For more information, see  the official USGS copyright policy. 
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