PHOSPHATE    DEPOSITS    IN    WESTERN    UNITED    STATES. 
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bed,  is  locally  shattered  in  a  remarkable  manner  without  displace- 
ment, the  phosphate  bed  beneath  being  but  little  affected  and  both 
limestone  and  phosphate  retaining  their  usual  dip.  The  succession  of 
the  beds  forming  the  phosphate  series,  as  exposed  in  the  workings  of 
the  Waterloo  claim,  is  given  in  the  accompanying  typical  section 
(fig  20). 
On  the  south  end  of  the  claim  and  also  at  the  north  end  in  the 
higher  ground  the  full  width  of  the  top  phosphate  bed,  shown   as 
Fig.  20. — Typical  section  of  lower  portion  of  phosphate  series,  Montpelier,  Idaho. 
eroded  in  the  section,  is  seen  to  be  about  10  feet  or  more.  It  contains 
some  large  lime  nodules,  black  and  very  hard,  also  thin  layers  of  brown 
shale,  and  is  overlain  by  a  succession  of  alternating  beds  of  limestone, 
shale,  and  phosphate,  the  phosphate  being  too  thin  or  too  low  in 
grade  to  be  profitably  worked  at  present.  This  part  of  the  series  is 
best  seen  on  the  north  side  of  Montpelier  Creek,  where  it  passes  up 
into  the  massive  limestones  already  mentioned.  -The  dips  here  are  in 
the  main  somewhat  steeper. 
