454         CONTBIBUTIONS    TO    ECONOMIC    GEOLOGY,   L906,   PART*  I. 
•  PREUSS    RANGE. 
The  Preuss  Range  extends  from  Bear  Lake  northward  along  tin 
east  side  of  Bear  River  Valley  beyond  the  limits  of  the  area  shown  01 
the  map  (PI.  IV).  Only  the  southern  part  of  this  range  was  visited 
Here  the  general  structure  seems  to  be  that  of  a  broken  anticline 
The  western  side  of  the  fold  is  made  up  of  the  phosphate  series  and  the 
higher  strata  of  the  " Permo-Carbonif erous "  and  overlying  Triassic 
beds.  The  eastern  side  of  the  fold  is  probably  formed  of  the  sam< 
series,  though  not  so  well  exposed,  and  of  overlying  Jurassic  shales 
thin-bedded  limestones,  and  sandstones,  as  shown  by  fossils  from  t\v< 
localities. 
DESCRIPTION    OF    VARIOUS    LOCALITIES. 
In  that  part  of  the  Wasatch  Range  which  lies  east  and  south  o 
Salt  Lake  rit\  the  phosphate  series,  so  far  as  it  has  come  under  tin 
writers'  observation  does  not  attain  the  thickness  seen  at  othei 
localities,  and  the  phosphate  beds  are  too  thin  to  be  of  economii 
importance. 
WEBl'.K    CANYON,    UTAH. 
The  Paleozoic  section  from  the  Cambrian  quartzite  to  the  top  of  the 
Carboniferous  is  exposed  in  Weber  Canyon  from  Peterson,  a  station 
on  the  Union  Pacific  Railroad,  to  Croydon.  From  the  lower  tunnel 
to  tlie  upper  tunnel  between  Morgan  and  ( 'ion  don  the  Weber  quartz! 
ite  is  exposed.  A  shorl  distance  above  the  lower  tunnel  there  is  a 
sharp  anticline  in  this  series,  .somewhat  broken.  The  canyon  follows 
the  trend  of  this  anticline  for  about  half  a  mile,  and  the  red,  yellow, 
and  while  quartzites  form  bold  escarpments  on  both  sides  of  the  river 
The  quartzites  grade  into  coarse  sandy  beds,  weathering  in  rounded 
cliffs,  and  into  thin-bedded  cherty  limestones.  Near  Robinson's 
ranch  the  beds  are  nearly  perpendicular,  and  the  fold  appears  to hava 
Income  a  thrusl  fault.  The  phosphate  beds,  which  seem  to  have 
been  involved  in  this  thrust  movement,  appear  in  canyons  several 
miles  farther  north,  but  at  a  considerable  distance  west  of  the  line  of 
strike  of  these  beds  ,,n  the  south  side  of  the  canyon.  About  one- 
fourth  nolle  below  Robinson's  house  the  phosphate  series  has  been 
exposed  on  the  south  side  of  the  canyon  in  a  number  of  test  pits. 
The  following  section  is  exposed  on  the  south  side  of  the  river: 
Section  ofphosphati  series  in  Weber  Canyon,  Utah. 
1.  Blue-gray  limestone. 
2.  Phosphate  bed. 
3.  While  and  gray  limestone  with  many  bands  of  phosphate  varying  in  thickness. 
4.  Light-blue  and  gray  Limestones,  siliceous  and  cherty;  yellow  calcareous  and  sili- 
ceous beds;  and  white  limestone. 
