GRAND    MESA   COAL   FIELD,    COLORADO.  327 
Sectio?is  of  coal  beds  in  the  Palisades  district,  Grand  Mesa  coal  field,  Colorado — Cont'd. 
UPPER  COAL    (PAON1A  SHALE    MEMBER,  OR  FRESH-WATER  MESAVERDE)— Cont'd. 
H 
§ 
d 
Name  and  lo- 
cation of  mine. 
Section. 
X! 
a 
O 
d 
13 
Name  and  lo- 
cation of  mine. 
Section. 
11 
Prospect  near 
Pickett 
ranch;    sec. 
6,  T.  12  S., 
R.97  W. 
Ft.  in. 
Shale,  sandy. 
Coal 6 
Sandstone. 
Prospect     on 
K  a  h  n  a  h 
Creek;     sec. 
26,  T.  12  S., 
R.  97  W. 
Ft.  in 
Shale. 
Coal 7 
Sandstone. 
12     Patterson: 
sec. 17, T.  12 
S.,  R.97  W. 
Shale,  carbonaceous. 
Coal,  bony 1 
Coal 4 
Shale 2 
7 
LOWER  COAL  (BOWIE  SHALE  MEMBER,  OR  MARINE  MESAVERDE). 
15 
Stokes;  NE.J 
SW.Jsec.2, 
T.  11  S.,  R. 
98  W. 
DeRush;SW. 
JNW.isec. 
11,  T.  11  S., 
R.98  W. 
Shale. 
Coal. 
Shale. 
Ft.  in. 
3      4 
Shale. 
Coal  (base  not  ex- 
posed)       3 
If, 
Prospect  2 
miles  south 
of  Palisades; 
sec.  26. T.  11 
S.,  R.98  W. 
Sandstone. 
Coal 
Sandstone. 
Ft.  in. 
1 
ROLLINS    DISTRICT. 
The  Bowie  shale  member  is  not  represented  in  the  Rollins  district 
or  central  part  of  the  field.  All  of  the  coal  is  in  the  Paonia  member, 
which  here  rests  upon  the  Rollins  sandstone.  Only  one  bed  of  com- 
mercial value  is  known  in  the  western  part  of  the  district,  but  in  the 
eastern  part  several  beds  of  workable  thickness  have  been  opened. 
The  thin  beds  above  the  workable  coal  near  Palisades  may  thicken 
toward  the  east,  but  too  little  is  yet  known  of  them  to  state  whether 
the  beds  of  coal  are  continuous  for  long  distances  or  are  more  or  less 
lenticular,  as  they  appear  to  be  in  the  eastern  part  of  the  field  where 
they  are  better  exposed. 
In  the  western  part  of  the  Rollins  district  the  coal  crops  out  high 
in  the  sides  of  the  mesa,  the  maximum  altitude  being  8,100  feet.  It 
is  exposed  in  only  a  few  places  on  account  of  a  surface  covering  con- 
sisting of  blocks  of  basalt  derived  from  the  cap  rock  of  the  mesa  and 
on  account  of  thickets  of  cedar,  scrub  oak,  and  underbrush  that 
restrain  erosion.  In  the  eastern  part  of  the  district  it  crops  out  lower 
in  the  mesa,  is  better  exposed,  and  has  been  prospected  more  exten- 
sively. The  location  of  the  principal  openings  is  showm  on  the  accom- 
panying map,  and  the  thickness  of  coal  is  given  in  the  following  table. 
The  mines  have  all  been  worked  more  or  less,  and  a  considerable 
amount  of  coal  is  supplied  each  winter  to  +he  local  market. 
