188         CONTRIBUTIONS    TO   ECONOMIC   GEOLOGY,   1907.   PART  II. 
Iii  the  NE.  i  sec.  27,  T.  7  S..  K.  23  K..  the  following  section  of  the 
coal  bed  \\  as  obtained  : 
Section  of  Eagle  coal  bed  7  miles  south  of  Bridget,  in  sec.  27,  T.7S.,  R.  23  E. 
Ft.  in. 
Shale,  carbonaceous 1  1 
Bone 8 
1  2 
About   one-fourth  of  a  mile  northwest  of  the  point  at  which  the 
regoi 
made : 
foregoing  section   was   obtained   the   following  measurements  were 
Section  of  Eagle  coal  bed  6\  miles  south  of  Bridget. 
Middle  bed:  Ft.    in. 
Coal 10 
Shale : 2 
Coal 1      1 
Shale,  carbonaceous 4 
Coal 1 
Shale,  carbonaceous »1 
Sandstone,  shaly 2 
Coal,  bony 1       3 
Total  coal 2     11 
Lower  bed: 
Shale,  carbonaceous 7 
Coal 6 
Shale 1 
1 1 
Total  coal 1     6 
S^   lion  of  Eagh  coal  200  yards  south  of  preceding  locality. 
Ft.    in. 
Coal 1      1 
Bone 8  ' 
Coal 1    2 
Total  coal 2     3 
About  750  feet  farther  north  there  is  a  fault  which  trends  N.  45°  E., 
producing  an  offset  of  1  mile  in  the  outcrop  of  the  coal  bed.  This 
fault  has  been  traced  from  the  southeast  corner  of  sec.  15  for  more 
than  2  miles  southwestward,  beyond  the  southeast  corner  of  sec.  29. 
About  1  mile  northwest  of  it  is  another  fault  trending  about  X.  65°  E., 
with  downthrow  on  the  southeast  side.  Between  these  two  faults  is 
a  depressed  block  of  strata  in  which  the  coal  bed  is  bent  in  a  small 
flexure.  Apparently  the  coal  does  not  reach  workable  thickness  in 
the  block,  the  beds  being  in  most  places  less  than  2  feet  thick.  How- 
ever, it  is  reported  on  good  authority  that  the  coal  is  over  2  feet  thick 
at  some  places  in  this  fault  block. 
