42            CONTRIBUTIONS   TO   ECONOMIC    GEOLOGY,  1907,  PART  II. 
Ft.    in. 
Shale,  fissile,  dark  brown 4     6 
Coal 
Shale,  gray,  with  numerous  limestone  concretions 17 
Limestone,  weathering  red 6 
Shale,  dark,  with  thin  layers  of  red  limestone 10 
Sandstone,  brown,  containing  fragments  of  carbonaceous    mate- 
rial    7 
Coal 1     6 
Shale,  light  gray 9 
Limestone,  red 2 
Shale 3 
Coal 3 
Shale,  blue 8 
Coal,  with  three  small  streaks  of  bone 3    4 
Sandstone 1 G 
Shale 4 
Sandstone 2     6 
Shale 3 
Coal 7 
Shale \ 6 
Coal,  dirty,  with  several  white  partings,  one-half  inch  to  1 
inch  thick  (Laney  bed)  (C,  PI.  Ill) 5 
Shale 1 
Sandstone 2 
Shale 4 
Limestone,  weathering  red 6 
Sandstone,  gray,  with  some  thin  layers  of  shale 25 
Limestone,  weathering  red 6 
Shale,  sandy,  yellowish  gray 8 
Coal 8 
Shale 3 
Sandstone,  friable,  gray 20 
Shale,  sandy,  many  concretions 5 
Limestone,  weathering  red 3 
Sandstone,  coarse,  gray 17 
Limestone,  weathering  light  red 6 
Sandstone 3 
Shale,  brown  with  blue  bands 10 
Sandstone 6 
Coal  and  shale 2 
Shale,  sandy,  gray,  usually  cross-bedded 50 
Coal 6 
Shale,  sandy 5 
Coal  (Kircher  bed)  (A,  PL  III) 5 
465  3 
This  member  is  conformably  overlain  by  more  homogeneous  rocks, 
mainly  sandy  shale,  which,  as  exposed  by  erosion,  are  generally  of  a 
light-yellow  color.  This  member  of  the  Fort  Union  formation  is  here 
designated  the  upper  member.  The  somber  color  which  prevails  in 
the  lower  part  of  the  formation  is  represented  in  the  upper  part  only 
by  an  occasional  bed  of  gray  or  light-blue  shale. 
