478  CONTRIBUTIONS    TO    ECONOMIC    GEOLOGY,  1904.         [bull.  260. 
At  Loray,  Nev.,  181  miles  west  of  Ogden,  an  abundant  supply  of 
good  water  was  found.  The  point  selected  for  boring  is  near  the 
eastern  outlet  of  an  extensive  reentrant  or  bay  on  the  western  border 
of  the  Bonneville  basin.  This  embayment  is  a  topographic  basin  in 
the  Gosiute  Range,  draining  eastward,  and  is  partially  filled  with 
recent  waterlaid  waste  material.  The  general  dip  of  the  sediments 
constituting  the  bed-rock  bottom  of  the  basin  is  toward  the  northeast, 
but  on  approaching  the  outlet  followed  by  the  railway  the  beds 
change  in  dip  and  strike,  the  dip  becoming  vertical.  Good  water  is 
stated  to  have  risen  in  the  well  110  feet  above  its  bottom  (538  feet) 
and  to  have  maintained  that  level  constantly  despite  a  drain  (by 
pumping)  of  10,000  gallons  an  hour  for  twenty-four  hours.  The 
supply  appears  from  general  observations  to  be  artesian,  but  the 
geologic  structure  noted  about  the  outlet  may  tend  to  make  the  actual 
extent  of  the  artesian  basin  much  less  than  the  apparent  extent. 
CONCLUSIONS. 
As  to  the  probability  of  finding  bituminous  products  in  Salt  Lake 
basin  in  sufficient  quantity  to  be  of  commercial  value,  ultimate  con- 
clusions must  await  detailed  geologic  study.  Little  is  yet  knowni 
about  the  structure  of  the  Bonneville  beds,  and  less  about  the  rocks> 
that  underlie  them.  The  recent  exploration  described  in  the  preced- 
ing pages  affords  valuable  evidence,  which  is  conclusive  so  far  as  it 
goes. 
The  Farmington  well,  sunk  :2f,000  feet  in  unconsolidated  material, 
m  a  region  characterized  by  abundant  escape  of  gas  and  hot  and  I 
cold  water  from  crests  of  elliptical  mounds,  has  failed  to  strike  oil, 
Many  deep  borings  in  unconsolidated  material  have  also  been  made 
in  search  of  water  in  the  vicinity  of  Salt  Lake  City  and  farthei 
south  without  disclosing  oil.  This  evidence  shows  that  oil  does  noil 
occur  in  the  unconsolidated  material  in  the  immediate  areas  explored' 
and  on  general  grounds  it  is  unfavorable  to  the  discovery  of  oil  ir 
these  sediments  elsewhere  in  Salt  Lake  basin. 
The  extent  of  the  occurrences  of  liquid  asphalt  at  Rozel  Point  ha; 
not  been  determined.  Although  the  seepages  thus  far  uncovered  h} 
the  receding  lake  Avaters  are  comparatively  small,  the  high  grade  o 
the  product,  its  proved  suitability  for  commercial  use,  and  the  readil; 
accessible  location  of  the  ground,  both  by  land  and  by  water,  reiide 
systematic  development  desirable  in  order  to  prove  the  form  and  siflj 
of  the  deposits.  In  view  of  the  possibility  that  this  asphalt  may  hav 
been  derived  from  petroleum  deposits,  the  outcome  of  the  boring  fo1' 
oil  in  the  immediate  vicinity  is  important. 
The  evidence  thus  far  gained  by  development,  however,  does  no  I 
reveal  the  character  and  contents  of  the  bed  rock  underlying  tfaii 
