﻿MARINE 
  DBJETS 
  IN 
  NORTH 
  WALES. 
  

  

  185 
  

  

  Fig. 
  1. 
  — 
  Sketch 
  Map 
  of 
  the 
  Drift-zone 
  between 
  Minera 
  and 
  

   Llangollen 
  Vale. 
  (Scale 
  1 
  inch 
  to 
  a 
  mile.) 
  

  

  f 
  g 
  e 
  ^:^^----._-'^ 
  

  

  tfo 
  Cae- 
  

   •••if 
  J 
  ae-wydd 
  

  

  i 
  

  

  . 
  /Braich 
  

  

  Hi'",'.,,,,, 
  

  

  The 
  broken 
  line 
  represents 
  a 
  wall 
  (generally 
  above 
  the 
  1000-feet 
  contour-line) 
  

   which 
  separates 
  the 
  cultivated 
  ground 
  on 
  the 
  east 
  from 
  the 
  grass-, 
  heath-, 
  and 
  

   bog-land 
  on 
  the 
  west. 
  The 
  dotted 
  spaces 
  represent 
  exposures 
  of 
  more 
  or 
  less 
  

   rounded 
  gravel 
  and 
  sand. 
  

  

  II. 
  Extent 
  oe 
  the 
  Drift-zone 
  between 
  Minera 
  and 
  

   Llangollen 
  Yale. 
  

  

  So 
  far 
  as 
  it 
  is 
  revealed 
  by 
  indications 
  at 
  the 
  surface 
  or 
  in 
  excava- 
  

   tions, 
  this 
  zone 
  extends 
  almost 
  continuously 
  from 
  a 
  point 
  south 
  of 
  

  

  o2 
  

  

  