370         CONTRIBUTIONS   TO    ECONOMIC   GEOLOGY,    1907,    PART   II. 
Ft.      in. 
Shale,  carbonaceous 1 
Coal 2       6 
Shale 1 
Coal 1      1 
Shale,  sandy 3 
Coal 8 
Shale 19 
Sandstone,  gray 6 
Sandstone,  massive 40 
Covered '. 100 
Sandstone,  massive,  soft 30 
496      4 
The  detailed  section  given  above  represents  the  entire  sandstone 
and  coal  zone  of  the  Mancos  formation.  From  this  place  the  Mancos 
is  coal  bearing  eastward  to  the  center  of  T.  15  N.,  R.  10  W. 
Locality  No.  4:  The  following  section  of  the  Mesaverde  coal-bearing 
rocks  was  measured  in  the  southwest  corner  of  sec.  34,  T.  17  N., 
R.  15  W.: 
Section  of  Mesaverde  coal-bearing  rocks  in  sec.  34,  T.  17  N.,  R.  15  W.  (No.  4)- 
Ft.     in. 
Sandstone,  brown,  massive 60 
Shale,  gray,  and  thin  sandstone 7 
Sandstone,  yellowish,  soft 5 
Shale,  gray 20 
Sandstone,  gray,  soft 8 
Shale 2 
Coal 8 
Shale 4 
Sandstone,  white 3 
Coal 1      4 
Sandstone,  white,  soft 3 
Sandstone 8 
Shale,  drab,  hard 7 
Sandstone,  brown 4 
Shale,  brown 10 
Coal 3       6 
Shale,  brown 6 
Sandstone,  locally  burned  red 15 
Coal 7       6 
Shale,  gray,  sandy 11 
Coal 7 
Shale,  gray 4 
Coal 1      3 
Shale,  gray 4 
Coal 6 
Shale,  brown 4 
Sandstone,  massive 6 
Shale,  brown 3 
Coal 1 
Shale,  gray 10 
Sandstone *. 4 
