Page 142 - Basic Well Log Analysis for Geologist
P. 142

LITHOLOGY  LOGGING  AND  MAPPING  TECHNIQUES






































































         Figure  47.   Example  of a MID*  crossplot  of  data  from  the  log  illustrated  in  Figure  45;  interval  is  [1,870  to  11,900  ft.  After
                Asquith  (1979).  The  lithologic  determination  is  the  same  as  in  Figure  46  M-N*  plot.
                Note  that  the  data  points  cluster  in  a  triangle  defined  by  the  end-members—limestone,  dolomite.  and  anhydrite~indicating
                the  lithology  is  an  anhydritic  limey  dolomite.










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