376         CONTRIBUTIONS   TO   ECONOMIC   GEOLOGY,   1907,    PART   II. 
Ft.    in. 
Shale,  black,  arenaceous 3 
Coal 6 
Shale,  drab,  hard 9 
Coal 1 
Shale 3 
Sandstone 4 
Shale 1 
Coal 3      6 
Shale.  
90      8 
Locality  No.  13:  At  the  southwest  corner  of  sec.  11,  T.  15  N.,  R.  10 
W.,  the  coal  beds  exposed  are  as  follows: 
Section  of  Mesaverde  coal  beds  in  sec.  11,  T.  15  N.,  R.  10  W.  (No.  13). 
Ft.      in. 
Shale,  carbonaceous 10 
Coal 3      3 
Shale,  carbonaceous 15 
Coal 2 
Shale,  carbonaceous 6 
Shale  and  thin-bedded  sandstone 100 
Shale,  carbonaceous 2 
Coal 2 
Shale 2 
Coal 2 
Covered.  
144      3 
Locality  No.  14:  In  the  southwestern  part  of  sec.  19,  T.  15  N.,  R.  9 
W.,  the  Mesaverde  contains  several  coal  beds  which  show  along  the 
face  of  the  escarpment.  These  beds  vary  remarkably,  as  a  com- 
parison of  the  sections  will  indicate.  Within  a  few  miles  thin  beds 
undoubtedly  thicken  to  valuable  proportions,  and  thicker  beds  thin 
to  mere  traces.  The  following  is  a  section  of  the  coal  beds  exposed 
at  locality  No.  14: 
Section  of  Mesaverde  coal  beds  in  sec.  19,  T.  15  N.,  R.  9  W.  (No.  14). 
Ft.    in. 
Shale,  carbonaceous 20 
Coal 2      3 
Shale,  carbonaceous 15 
Coal 1     10 
Shale  and  sandstone 12 
Coal 1      2 
Shale 2 
Coal '. 3      1 
Shale,  carbonaceous 4 
Sandstone,  brown 10 
Shale,  drab 15 
Coal 1 
