﻿II 
  K 
  Gregory 
  — 
  Gravels 
  at 
  Cuzco. 
  23 
  

  

  Fig. 
  8. 
  Fig. 
  9. 
  

  

  

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  1 
  

  

  IPlSII 
  

  

  

  

  

  a, 
  40 
  ft., 
  gravel, 
  massive. 
  

   &. 
  4 
  ft., 
  fine 
  sand. 
  

  

  c, 
  7 
  ft., 
  gravel, 
  massive. 
  

  

  d, 
  6 
  feet, 
  compact 
  clay 
  adobe. 
  

  

  e, 
  20 
  ft., 
  coarse 
  gravel", 
  massive. 
  

   u, 
  unconlormitv. 
  

  

  Si8i 
  

  

  a, 
  2 
  ft., 
  soil 
  and 
  adobe. 
  

  

  b, 
  2 
  ft., 
  fine 
  shell 
  limestone. 
  

  

  c, 
  5 
  ft., 
  gravel, 
  coarse 
  and 
  fine, 
  hori- 
  

   zontal. 
  

  

  d, 
  6 
  ft., 
  massive 
  adobe, 
  with 
  lenses 
  

   of 
  gravel. 
  

  

  e, 
  4 
  ft., 
  fine 
  sand 
  with 
  gravel 
  patches. 
  

   /. 
  10 
  ft. 
  . 
  adobe 
  with 
  thin 
  lenses 
  of 
  

  

  gravel. 
  

   g. 
  2 
  ft., 
  compact 
  adobe. 
  

   h, 
  2 
  ft., 
  fine 
  sand 
  and 
  clay. 
  

   i, 
  3 
  ft., 
  adobe 
  with 
  thin 
  band 
  of 
  shell 
  

  

  limestone. 
  

   u, 
  unconformity. 
  

  

  Fig. 
  8. 
  — 
  Sec. 
  VII, 
  Bank 
  of 
  unnamed 
  tributary 
  to 
  Rio 
  Sappi 
  opposite 
  trie 
  

   Eodadero. 
  

  

  Fig. 
  9. 
  — 
  Section 
  VIII, 
  Bank 
  of 
  the 
  Chuuchullumayo, 
  near 
  junction 
  with 
  

   Rio 
  Huatanay. 
  

  

  Surface 
  wash 
  from 
  the 
  bordering 
  slopes, 
  controlled 
  in 
  amount 
  

   and 
  character 
  by 
  climatic 
  changes, 
  has 
  probably 
  been 
  accumu- 
  

   lating 
  continuously 
  since 
  glacial 
  times, 
  and 
  has 
  greatly 
  increased 
  

   since 
  human 
  occupation 
  began. 
  Soil 
  wash 
  resting 
  nnconform- 
  

   ably 
  on 
  the 
  surface 
  of 
  the 
  fan 
  may 
  be 
  observed 
  at 
  favorable 
  

   localities. 
  On 
  the 
  lower 
  sandstone 
  slopes 
  bordering 
  the 
  Cuzco 
  

  

  