fisher.]  COAL    IN    NORTH  WESTEKN    WYOMING.  351 
That  portion  of  the  Meeteetse  district  lying  south  of  Gray  Bull 
River  is  separated  into  two  parts  by  erosion  along  an  anticlinal  fold. 
The  main  body  of  coal-bearing  measures  lies  east  of  Wood  River, 
between  Gray  Bull  River  and  Gooseberry  Creek,  and  a  detached  por- 
tion occurs  west  of  Wood  River.  The  two  anticlinal  folds  crossing 
the  main  body  bring  the  lower  coal-bearing  measures  of  the  Laramie 
to  the  surface  in  a  number  of  places  along  Gooseberry  Creek.  These 
anticlines  are  roughly  parallel,  and  extend  southeastward,  the  lower 
and  larger  one  crossing  Gooseberry  Creek  2  miles  below  the  mouth 
of  Enos  Creek.  On  the  divide  about  6  or  7  miles  south  of  Meeteetse 
this  fold  presents  a  deep  topographic  depression,  known  as  the  Upper 
Buffalo  Basin,  the  center  of  which  is  occupied  by  Pierre  shale  encir- 
cled by  a  high  wall  of  the  coal-bearing  Laramie  sandstone.  The  upper 
and  smaller  fold  crosses  Gooseberry  Creek  about  a  mile  above  the 
mouth  of  Mud  Springs  Creek.  This  is  also  a  topographic  depression 
similar  in  structure  to  the  Upper  Buffalo  Basin.  Its  central  portion 
is  composed  of  Pierre  shale  surrounded  by  a  rim  of  basal  Laramie 
sandstone.  The  greater  dimension  of  this  anticline  extends  from 
northwest  to  southeast  and  is  about  6  or  7  miles  long,  while  its  greatest 
width  will  not  exceed  2  miles.  At  the  north  end  it  is  cut  transversely 
by  Gooseberry  Creek,  exposing  the  lower  coal  horizon  of  the  basal 
sandy  series.  About  5  miles  down  Gooseberry  Creek,  near  the  mouth 
of  Middle  Fork,  there  is  another  small  showing  of  coal  which  prob- 
ably belongs  to  the  same  horizon.  In  a  small  ravine  entering  Goose- 
berry Creek  from  the  south,  and  on  the  east  rim  of  the  southern 
extension  of  the  Upper  Buffalo  Basin  anticline,  there  is  a  coal  opening 
known  as  the  Dickie  mine  No.  1.  This  mine  exposes  a  bed  of  bright, 
clean-looking  coal  li  feet  thick,  without  parting.  The  coal  is  imme- 
diately overlain  by  a  2-foot  layer  of  gray  cla}7,  fine  grained  and  com- 
pact, containing  carbonized  plant  fragments.  The  coal  is  at  the  lower 
horizon  of  the  basal  sandy  series  and  dips  at  an  angle  of  17°  east- 
northeast.  The  mine  has  never  been  worked  extensively  and  the 
main  entry  extends  but  a  few  feet.  The  coal,  however,  is  an  excellent 
quality  and  the  general  conditions  are  favorable  for  development. 
There  is  another  bed  about  12  feet  lower,  the  general  character  of 
which  could  not  be  ascertained  owing  to  talus.  The  accompanying 
section  shows  the  relative  position  of  the  two  beds: 
Section  of  the  Dickie  mine,  No  1,  on  Gooseberry  Creek,  Wyoming. 
Ft,     In. 
Gray,  compact  clay 2  0 
Coal 4  6 
Gray  clay 3  0 
Buff  sandstone 6  0 
Brown  sandstone 2  0 
Impure  coal 6  0 
