386  CONTRIBUTIONS    TO    ECONOMIC    GEOLOGY,   L905. 
Of  tlio  disturbed  region  along  the  west  of  the  Rock  Creek-Needles  anticlinal,  little  nee 
be  said  in  this  paper,  since,  with  the  exception  of  the  beds  of  K\  mist  on  age,  containing  tl 
Almv  coals,  the  f  >rmat'ons  here  arc  all  Bear  River  or  older,  and  hence  l'e  below  the  ma 
coal  measures  of  this  region.  The  formations  are  also  older  than  the  beds  yielding  oil  i 
Spring  Valley,  and  are,  moreover,  too  badly  broken  to  be  of  probable  importance  from  g 
oil  standpoint.  The  Almy  coals  are  found  on  the  east  side  of  a  minor  faulted  anticline  c 
the  west  side  of  the  Rock  Creek-Needles  anticlinal. 
COAL. 
Coal  developments  have  been  made  in  four  different  groups  of  coal-bearing  beds- 
(1)  the  Bear  River  format  ion;  (2)  a  group  containing  the  Kemmerer,  Willow  Creek,  (  arte 
and  Spring  Valle}  coals,  of  Benton  age;  (3)  a  group  containing  the  Ada\  lie  and  Tw: 
Creek  coals,  of  uppermost  Montana  and  Laramie  age:  and  (4)  the  beds  of  upper  Laram 
or  Evanston  age  at  Almv. 
Coal  of  ilu  Bear  River  formation.  IVale"  reports  that  coal  was  discovered  near  Sal 
in  1ST"),  and  that  before  h  -  visit  ;n  ls77  a  mine  had  been  opened  by  the  Wyoming  Cd 
and  Coking  Company  ami  coke  ovens  erected.  The  slope  was  170  feet  in  length,  with 
single  side  entrj    120  feet  long,     lie  reports  the  following  section: 
Section  of  coal-bearing  strata  <ti  Sage,  Uinta  Conn/;/,  Wyo. 
1.  Light-colored  sandstone,  forming  roof.  Feet. 
2.  Coal,  mined  by  Wyoming  Coal  and  Coking  Company •', 
'A.  (lay :  6 
4.  Coal 0.3 
Shales  and  slate 
ti.  Coal 3.5 
7.  Sandstone,  with  thin  bed  of  coal. 
It  is  n  ported  that  picked  samples  of  this  coal  will  make  coke  and  that  washing  was  t  ri( 
to  remove  the  impurities.  With  the  building  of  the  Oregon  Short  Line  in  I s.s I  a  secon 
attempt  was  made  to  dev<  lop  this  locality,  and  a  third  trial  was  made  in  1890,  when,  it 
reported,  the  old  slope  was  deepened  about  200  feet  and  several  new  entries  were  drive 
A  new  coke  oven  was  constructed  under  the  direction  of  a  Pennsylvania  expert,  wh 
after  careful  tests,  pronounced  the  coal  of  no  value  as  a  coking  coal.  Altogether  abol 
$130,000  has  been  spent    in  a  fruitless  attempt    to  develop  the  coal  at    this  point. 
This  mine  s  still  open,  although  the  lower  part  is  tilled  with  water.  An  examinatic 
of  the  coal  bed  near  the  mouth  of  the  mine  showed  .">•',  feet   of  very  impure  coal. 
Stanton  has  shown  that  the  upper  coal  here  is  above  beds  containing  marine  lower  Col< 
rado  fossils,  while  the  beds  adjoining  the   lower  coals  contain  typical  Bear  River  species 
it  coals  are  found  in  the  Bear  River  formation  at  Cokeville  I  formerly  called  Coke  town 
'JO  miles  north  of  Sage,  and  attempt-  to  develop  these  beds  have  likewise  proved  I'm  i  ties 
Prospects  ha\  e  been  opened  just  east  of  Beckvi  .1  h  in  1  he  same  beds  which  occur  at  Sage. 
( 'oal-bearing  beds  containing  tin  h'<  mmerer,  W'i How  Creek,  Carter,  and  Spring  Valli  y  coals.- 
The  coals  in  this  group  were  first  discovered  by  Fremont  near  the  present  site  of  Cunibe 
land,  August  19,  1843. c  In  l848Claytond  reported  coal  in  these  beds  on  SulphurCret 
near  the  site  of  <>id  Bear  River  City,  and  in  bs.VJ  Stansbury  described  the  localit}  and  place 
on  the  map  accompanying  his  report    the  words  " Great  Coal  Basin,"  extending  from  tl 
!i     l.C,  Report  on  the  geology  of  the  Green  River  district :   Eleventh  Ann.  Rept.  U.  S.  Gel 
and  Geog.  Surv.  Terr,  (for  1877),  L879,  pp.  57'4  575. 
b  Am.  Jour.  Sei..  3d  ser.,  vol.  43,  1892,  p.  L08. 
remont,  J.C.,  Report  of  the  Exploring  Expedition  to  Rocky  .Mountains  and  to  Oregon  and  Nori 
California,  28th  Cong.,  2d  sess.,  Bouse  Doc.  No.  L66,  L845,  pp.  131,297. 
d  Clayton,  W.,  Latter  Day  Saints  Emigrants'  Guide,  1848,  p.  29, 
