On 11/17/2011 6:32 PM, chrisatupw@....... wrote:
>
>
>
> -----Original Message-----
> From: Randall Pratt 
> To: psnlist 
> Sent: Thu, 17 Nov 2011 22:53
> Subject: SD Quakes
>
> I’ve researched a bit more on drilling and I don’t believe there is 
> any relation here.  There are 3 old wells in the 6 to 10 thousand foot 
> range but all are listed as wildcat dry holes in the state records.  
> The nearest production appears to be about 15 miles northwest. 
> http://denr.sd.gov/des/og/maps/fallriver.gif  The quakes are in sec 35 
> of 11S 5E.  Looking at the USGS sites there seems to be a pattern of 
> historical activity roughly following the Nebraska South Dakota border 
> and these would fit that pattern 
> http://earthquake.usgs.gov/earthquakes/states/south_dakota/seismicity.php
> Randy
If it is a quake it will be deeper and have a earthquake signature 
rating of good to excellent ...BUT,  I believe there is an old fault  
which is believed to run from around Sparks OK toward and into 
southwestern South Dakota

  
    
  
  
    On 11/17/2011 6:32 PM, chrisatupw@....... wrote:
    


        

        

        
-----Original Message-----

          From: Randall Pratt <rpratt@.............>

          To: psnlist <psnlist@..............>

          Sent: Thu, 17 Nov 2011 22:53

          Subject: SD Quakes

          

          

            
            

              
I’ve
                    researched a bit more on drilling and I don’t
                    believe there is any relation here.  There are 3 old
                    wells in the 6 to 10 thousand foot range but all are
                    listed as wildcat dry holes in the state records. 
                    The nearest production appears to be about 15 miles
                    northwest. http://denr.sd.gov/des/og/maps/fallriver.gif
                     The quakes are in sec 35 of 11S 5E.  Looking at the
                    USGS sites there seems to be a pattern of historical
                    activity roughly following the Nebraska South Dakota
                    border and these would fit that pattern http://earthquake.usgs.gov/earthquakes/states/south_dakota/seismicity.php
              
 
              
 
              
Randy
              
 
            
          
          
      
    
    If it is a quake it will be deeper and have a earthquake signature
    rating of good to excellent ...BUT,  I believe there is an old
    fault  which is believed to run from around Sparks OK toward and
    into southwestern South Dakota