374         CONTRIBUTIONS   TO   ECONOMIC   GEOLOGY,   1907,   PART  II. 
Locality  No.  10:  The  following  is  a  general  section  of  the  Mesaverde 
or  upper  coal-bearing  rocks,  measured  in  the  northwest  corner  of  sec. 
29,  T.  16  N.,  B,  11  W.: 
Section  of  Mesaverde  coal-bearing  rocks  in  sec.  29,  T.  16  N.,  R.  11  W.  {No.  10). 
Ft.    in. 
Sandstone,  yellow,  massive 55 
Shale,  gray 20 
Shale,  black,  with  streaks  of  bony  coal 7 
Coal 10 
Shale,  gray 5 
Coal 2      6 
Shale,  gray 2 
Sandstone,  white,  soft 4 
Shale,  brown 4 
Coal 2      3 
Shale,  brown 2 
Sandstone,  white,  soft 2 
Shale,  brown 30 
Coal 4 
Sandstone,  pinkish,  soft ' 3 
Shale,  soft 12 
Sandstone,  hard 2 
Sandstone,  soft,  and  shale 25 
Sandstone,  brown,  hard 3 
Shale,  brown 4 
Coal 1      4 
Shale,  dark 3 
Shale,  gray 3 
Coal 5      2 
Shale 4 
Coal 4 
Shale 7 
Coal 2 
Sandstone,  thin  bedded 3 
Shale,  sandy 8 
Sandstone 18 
Shale,  brown 8 
Coal 10 
Coal,  bony 2 
Sandstone,  yellowish 4 
Shale,  gray 3 
Coal 2 
Sandstone,  thin  bedded 6 
Shale  and  soft  sandstone 38 
Coal 2      2 
Shale  and  sandstone,  soft 32 
Sandstone,  tan  colored,  hard 25 
Sandstone,  brown,  massive,  hard 35 
Shale,  Mancos.  
402      5 
Locality  No.  11 :  The  principal  coal  bed  of  the  Mancos  shale  is  the 
Tie j en  bed,  so  named  from  a  small  prospect  made  several  years  ago 
