﻿118 
  C. 
  L. 
  Baker 
  — 
  Contributions 
  to 
  the 
  

  

  local 
  small 
  lenses 
  of 
  lignite. 
  The 
  total 
  assemblage 
  makes 
  

   np 
  an 
  immense 
  alluvial 
  fan 
  deposit 
  laid 
  down 
  by 
  streams 
  

   rising 
  in 
  higher 
  lands 
  to 
  the 
  north 
  and 
  northwest^ 
  In 
  

   mode 
  of 
  origin 
  the 
  Triassic 
  is 
  similar 
  to 
  the 
  Cenozoic 
  of 
  

   the 
  Llano 
  Estacado 
  and 
  High 
  Plains, 
  to 
  the 
  later 
  Ceno- 
  

   zoic 
  and 
  recent 
  deposits 
  of 
  the 
  Great 
  Valley 
  of 
  Cali- 
  

   fornia, 
  and 
  the 
  Pampas 
  of 
  Argentina. 
  

  

  Near 
  the 
  top 
  of 
  the 
  strata 
  here 
  referred 
  to 
  the 
  Upper 
  

   Trias 
  is 
  a 
  conspicuous 
  bed 
  of 
  white 
  much 
  cross-bedded 
  

   sandstone 
  which 
  was 
  traced 
  from 
  the 
  southern 
  Sangre 
  

   de 
  Cristo 
  Mountains 
  eastwards 
  to 
  beyond 
  TucumcarL 
  

   This 
  may 
  represent 
  the 
  Zuni 
  sandstone 
  of 
  northwestern 
  

   New 
  Mexico. 
  

  

  The 
  basal 
  member 
  of 
  the 
  Upper 
  Trias, 
  the 
  Glorieta 
  

   sandstone, 
  outcrops 
  along 
  the 
  valley 
  of 
  the 
  Pecos 
  from 
  

   the 
  Glorieta 
  Mesa 
  downstream 
  to 
  somewhere 
  between 
  

   Puerto 
  de 
  Luna 
  and 
  Fort 
  Sumner. 
  It 
  outcrops 
  at 
  Santa 
  

   Rosa. 
  

  

  The 
  thickest 
  section 
  measured 
  of 
  strata 
  here 
  included 
  

   under 
  the 
  L 
  T 
  pper 
  Trias 
  — 
  and 
  the 
  lower 
  part 
  of 
  which 
  is 
  

   certainly 
  Upper 
  Trias 
  — 
  is 
  the 
  one 
  with 
  vertical 
  or 
  

   slightly 
  overturned 
  beds 
  in 
  the 
  east 
  flank 
  of 
  the 
  Rocky 
  

   Mountain 
  Front 
  Range 
  fold 
  just 
  east 
  of 
  Las 
  Vegas 
  Hot 
  

   Springs. 
  The 
  thickness 
  here 
  is 
  1770 
  feet, 
  the 
  upper 
  part 
  

   of 
  which 
  may 
  possibly 
  include 
  some 
  Jurassic. 
  

  

  A 
  bed 
  of 
  gypsum 
  about 
  50 
  feet 
  in 
  thickness, 
  underlain 
  

   by 
  thin 
  dark 
  brown 
  flaggy 
  and 
  very 
  bituminous 
  lime- 
  

   stone, 
  occurs 
  on 
  the 
  east 
  flank 
  of 
  the 
  Sandia 
  Mountains 
  

   about 
  30 
  miles 
  ncrth-northeast 
  of 
  Albuquerque. 
  The 
  

   gypsum 
  lies 
  near 
  the 
  top 
  of 
  the 
  strata 
  here 
  referred 
  to 
  

   L'pper 
  Trias. 
  On 
  top 
  of 
  the 
  gypsum 
  is 
  a 
  heavy 
  bed 
  of 
  

   red 
  sandstone 
  followed 
  by 
  greatly 
  cross-bedded, 
  massive 
  

   buff 
  sandstone. 
  It 
  is 
  likely 
  that 
  the 
  last 
  mentioned 
  bed 
  is 
  

   the 
  equivalent 
  of 
  one 
  of 
  the 
  same 
  nature 
  in 
  the 
  southern 
  

   Sangre 
  de 
  Cristo 
  Mountains 
  and 
  eastwards 
  to 
  beyond 
  

   Tucumcari. 
  The 
  bed 
  of 
  gypsum 
  extends 
  west 
  to 
  the 
  Mt. 
  

   Taylor 
  region. 
  In 
  places 
  the 
  massive 
  sandstones 
  above 
  

   the 
  gypsum 
  are 
  absent 
  and 
  this 
  statement 
  especially 
  ap- 
  

   plies 
  to 
  the 
  country 
  east 
  of 
  the 
  Rio 
  Grande. 
  The 
  gypsum 
  

   bed 
  is 
  not 
  known 
  in 
  the 
  Rocky 
  Mountains 
  and 
  in 
  the 
  High 
  

   Plains 
  to 
  the 
  east. 
  What 
  is 
  probably 
  the 
  same 
  gypsum 
  

   bed 
  is 
  found 
  at 
  the 
  top 
  of 
  the 
  Triassic 
  section 
  at 
  the 
  

   mouth 
  of 
  Navajo 
  Canon, 
  near 
  the 
  junction 
  of 
  the 
  Arroyo 
  

  

  