COAL  BETWEEN   GALLUP  AND   SAN    MATEO,    N.    MEX.  373 
Ft.       in. 
Shale 8 
Coal '    1 
Shale  and  sandstone 20 
Coal 1      6 
Shale 1 
Coal 1      6 
Shale  and  sandstone 100 
Shale,  brown,  carbonaceous 1 
Coal 2 
Shale 3 
Coal 2 
Shale,  brown,  carbonaceous 1 
Shale 2 
Shale,  brown,  carbonaceous 1 
Shale  and  sandstone 100 
Shale,  brown,  carbonaceous 1 
Coal 1 
Shale,  brown,  carbonaceous 1 
Shale 2 
Coal  containing  much  fossil  resin 2 
Shale,  brown,  carbonaceous 1 
1 
306 
Locality  No.  9.:  Near  the  southeast  corner  of  sec.  11,  T.  15  N.,  R. 
12  W.,  there  is  one  workable  bed  in  the  Mancos  showing  the  following 
section : 
Section  of  Mancos  coal  bed  in  sec.  11,  T.  15  N.,  R.  12  W.  (No.  9). 
Ft.     in. 
Sandstone  with  intercalated  sandy  shale 4 
Coal 3       2 
Shale,  sandy 2 
Coal 10 
Shale,  carbonaceous 10 
18      2 
A  section  of  this  bed  measured  3  or  4  miles  west  of  the  locality 
noted  above  is  given  in  the  report  of  Shaler,  who  describes  it  as 
follows :  ° 
A  typical  section  of  the  Mancos  coal  is  exposed  in  the  escarpment  south  of  the 
entrance  to  Devils  Pass,  about  12  miles  east  of  north  of  Thoreau.  The  coal  compares 
well  in  quality  with  the  sample  collected  in  1905  from  the  same  bed  in  the  Tiejen 
prospect,  6  10  miles  east  of  north  from  Baca.  The  analysis  shows  a  good  subbituminous 
coal.  It  contains  considerable  fossil  resin,  which  causes  it  to  ignite  readily.  The 
strata  *  *  *  dip  east  of  north  at  an  angle  of  7°.  The  section  of  the  coal  is  as 
follows: 
Section  of  Mancos  coal  bed  south  of  Devils  Pass. 
Shale,  drab.  Ft.  in. 
Coal 2       6 
Shale 3 
Coal 10 
Shale,  brown,  carbonaceous.  
3      7 
a  Op.  cit.,  p.  410.  b  See  No.  11  of  this  report,  p.  374. 
