THE  COAL  FIELD  BETWEEN  GALLUP  AND  SAN  MATEO, 
NEW  MEXICO. 
By  James  H.  Gardner. 
INTRODUCTION. 
The  coal-bearing  rocks  between  Gallup  and  San  Mateo,  N.  Mex., 
are  included  in  a  portion  of  the  area  covered  by  the  hasty  reconnais- 
sance of  Schradera  in  1905.  Because  of  the  brief  time  available  for 
work  during  the  season  of  1905,  Schrader's  party  was  unable  to  trace 
boundaries  in  detail.  The  matter  of  land  lines  was  necessarily  ignored 
to  a  large  extent,  as  in  other  parts  of  the  region.  The  field  work  of 
the  last  season  included  a  resurvey  of  the  area  in  greater  detail  and 
relative  to  land  lines.  The  map  here  presented  (PL  XXIV)  was  pre- 
pared by  W.  J.  Reed.  Acknowledgment  is  due  also  to  A.  L.  Beekly 
for  valuable  assistance  in  the  field. 
Work  was  begun  at  the  northeast  corner  of  T.  15  N.,  R.  18  W.,  of  the 
New  Mexico  principal  meridian,  the  township  in  which  Gallup  is 
located,  and  continued  eastward  to  San  Mateo,  in  T.  13  N.,  R.  8  W., 
including  a  resurvey  of  that  township.  The  report  given  here  is  a 
brief  review  of  this  portion  of  the  San  Juan  coal  region  (Durango- 
Gallup  coal  field).  A  full  report  on  the  entire  field  is  in  preparation, 
to  be  published  later  as  a  bulletin  of  the  Survey. 
The  region  under  discussion  is  one  of  sparse  population.  The 
lack  of  permanent  streams  for  irrigating  purposes  leaves  the  country 
practically  void  of  agricultural  development.  During  the  fall  and 
spring  months  there  is  usually  a  fair  growth  of  grass  over  the  area 
and  stock  may  be  grazed  with  profit,  but  as  the  grazing  season  does- 
not  continue  throughout  the  entire  year  and  is  inconstant  in  its  occur- 
rence, little  capital  has  been  invested.  There  are  a  few  small  springs 
near  which  are  located  trading  posts,  supported  largely  by  Mexicans 
and  Navajo  Indians. 
a  Schrader,  F.  C,  The  Durango-Gallup  coal  field  of  Colorado  and  New  Mexico:   Bull.  U.  S.  Geol. 
Survey  No.  285, 1906,  pp.  241-258. 
364 
