392         CONTRIBUTIONS   TO   ECONOMIC   GEOLOGY,   1907,   PAET   II. 
South  of  Sliirtz  Creek  the  coal  outcrop  is  also  covered  by  a  sheet  of 
lava,  and  where  it  next  appears,  east  of  Kanarraville,  a  fault  probably 
divides  the  coal  measures  and  causes  an  apparent  repetition  of  the 
coal.  The  dislocation  is  suggested  by  the  occurrence  of  two  beds  of 
coal  with  fossiliferous  limestone  above  each,  in  sees.  8  and  10,  T.  38  S., 
R.  11  W.,  but  the  actual  existence  of  the  fault  has  not  been  demon- 
strated. However,  5  miles  farther  south,  at  the  end  of  the  area 
mapped,  a  fault  which  causes  an  estimated  displacement  of  500  feet 
in  the  massive  red  sandstone  and  overlying  Jurassic  limestone  is 
plainly  visible,  and  the  suspected  fault  in  the  coal  measures  appears  to 
be  the  northward  continuation  of  this  displacement. 
Several  prospect  pits  and  small  mines  have  been  opened  on  the 
plateau  east  of  Kanarraville,  where  the  coal  is  at  an  elevation  of  about 
3,000  feet  above  the  town.  Two  old  mines,  known  as  the  Lone  Tree 
(No.  9)  and  Pollock  (No.  10),  were  caved  in  when  visited  in  1907. 
Daggett a  reported  in  1883  that  8  feet  of  coal  was  exposed  in  the  Lone 
Tree  mine,  and  14  feet  3  inches  in  the  Pollock  mine.  At  present  the 
Kanarra  mine  (No.  11)  is  the  only  one  that  is  worked.  This  is  located 
on  the  road  from  Kanarraville  across  the  plateau,  and  consists  of  a 
drift  about  200  feet  long,  with  several  rooms  off  the  main  entry  which 
are  now  caved  in.  The  following  section  was  measured  at  the  mouth 
of  the  entry: 
Section  of  coal  bed  at  Kanarra  mine. 
Ft.    in. 
Limestone,  shaly,  fossiliferous 4 
Shale,  carbonaceous 2 
Coal 8    9 
Shale,  carbonaceous 7 
Sandstone,  buff. 
Between  the  Kanarra  mine  and  North  Fork  of  the  Virgin,  an  air- 
line distance  of  18  miles  and  a  distance  along  the  outcrop  of  more 
than  40  miles,  the  coal  is  unprospected  and  very  little  is  known  regard- 
ing it.  Throughout  this  distance  the  coal  outcrops  for  the  most  part 
in  the  face  of  steep  cliffs  and  is  difficult  of  approach.  Wherever  sec- 
tions were  measured  during  the  survey  in  1907  one  or  more  beds  of 
coal  were  encountered,  the  indications  being  that  the  coal  occurs  in 
lenses  which  thicken  and  thin.  No  single  bed  could  be  recognized  as 
such  for  any  considerable  distance. 
The  following  measurements  show  general  conditions : 
Section  of  coal  beds  in  sec.  8,  T.  38  S.,  R.  11  W. 
Ft.    in. 
Coal 4 
Covered 15 
Sandstone,  massive,  buff 35 
Sandstone,  thin  bedded 10 
a  Op.  cit.,  pp.  77-78. 
