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  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  South 
  Dakota^ 
  

  

  The 
  clajs 
  of 
  South 
  Dakota 
  are 
  classed 
  as 
  brick, 
  potters', 
  fire 
  

   clays, 
  and 
  fullers' 
  earth. 
  

  

  Brick 
  clay. 
  The 
  material 
  most 
  commonlj 
  used 
  for 
  brickmak- 
  

   ing 
  in 
  South 
  Dakota 
  is 
  some 
  kind 
  of 
  loam 
  such 
  as 
  that 
  supplied 
  

   by 
  the 
  loess 
  in 
  Union, 
  Minnehaha, 
  and 
  Moody 
  co. 
  It 
  is 
  also 
  

   thick 
  in 
  the 
  high 
  terraces 
  along 
  the 
  Missouri, 
  and 
  Cheyenne 
  

   rivers, 
  and 
  in 
  most 
  of 
  the 
  country 
  south 
  of 
  the 
  White 
  river, 
  in 
  

   the 
  Laramie 
  formation, 
  in 
  the 
  northwestern 
  counties 
  of 
  the 
  state. 
  

   Local 
  beds 
  are 
  found 
  underlying 
  the 
  flood 
  plains 
  of 
  the 
  large 
  

   streams. 
  

  

  Potters' 
  clay. 
  Very 
  plastic 
  dark 
  clays 
  are 
  said 
  to 
  abound 
  in 
  

   the 
  Benton 
  and 
  the 
  Pierre 
  groups 
  of 
  the 
  Cretaceous. 
  

  

  Light 
  colored 
  clays 
  abound 
  in 
  the 
  White 
  river 
  beds, 
  and 
  in 
  

   several 
  horizons 
  of 
  the 
  Paleozoic 
  of 
  the 
  South 
  hills, 
  which 
  furnish 
  

   elays 
  that 
  are 
  probably 
  adapted 
  to 
  the 
  potter's 
  purposes. 
  

  

  Fire 
  clays. 
  Extensive 
  deposits 
  of 
  fire 
  clay 
  occur 
  in 
  the 
  Dakota 
  

   formation, 
  which 
  forms 
  a 
  rim 
  around 
  the 
  Black 
  hills. 
  This 
  bed 
  

   has 
  been 
  worked 
  for 
  several 
  years, 
  specially 
  at 
  Rapid 
  City. 
  

  

  Fullers' 
  earth. 
  Beds 
  of 
  this 
  material 
  have 
  been 
  reported 
  from 
  

   the 
  vicinity 
  of 
  Fairbum, 
  Custer 
  co. 
  

  

  Tennessee 
  

  

  The 
  clay 
  resources 
  of 
  this 
  state 
  are 
  very 
  similar 
  to 
  those 
  of 
  

   Kentucky. 
  (R. 
  T. 
  Hill. 
  Mineral 
  resources, 
  U. 
  S. 
  geol. 
  sur. 
  1891) 
  

   The 
  Carboniferous 
  fire 
  clays 
  and 
  shales 
  are 
  abundant 
  in 
  the 
  east- 
  

   ern 
  half 
  of 
  the 
  state, 
  and 
  pottery 
  clays 
  of 
  the 
  Eocene, 
  and 
  La 
  

   Fayette 
  formations 
  are 
  extensively 
  developed 
  in 
  the 
  western 
  part. 
  

  

  Around 
  Chattanooga, 
  there 
  are 
  important 
  factories 
  for 
  the 
  

   manufacture 
  of 
  fire 
  brick 
  and 
  sewer 
  pipe. 
  

  

  Texas 
  

  

  Brick 
  clays 
  are 
  abundant 
  throughout 
  the 
  state. 
  Many 
  of 
  the 
  

   Tertiary 
  clays 
  are 
  suitable 
  for 
  drain 
  tile 
  and 
  terra 
  cotta, 
  specially 
  

  

  1 
  J. 
  E. 
  Todd, 
  E. 
  and 
  M. 
  jour. 
  24 
  Sep., 
  1898. 
  

  

  