﻿400 
  

  

  PROCEEDINGS 
  OF 
  THE 
  GEOLOGICAL 
  SOCIETY. 
  

  

  [June 
  8, 
  

  

  From 
  this 
  point 
  upwards 
  to 
  the 
  fault, 
  the 
  beds 
  are 
  so 
  dislocated 
  

   that 
  I 
  was 
  unable 
  to 
  determine 
  their 
  true 
  sequence. 
  

  

  2. 
  East 
  of 
  Watchet. 
  — 
  The 
  second 
  section, 
  about 
  a 
  quarter 
  of 
  a 
  

   mile 
  to 
  the 
  east 
  of 
  Watchet 
  Harbour, 
  between 
  high- 
  and 
  low-water 
  

   marks, 
  shows 
  the 
  higher 
  beds, 
  which 
  I 
  failed 
  to 
  make 
  out 
  to 
  the 
  

   west. 
  

  

  Fig. 
  2. 
  — 
  Section 
  east 
  of 
  Watchet. 
  

  

  N. 
  

  

  H 
  'g 
  h 
  ^ 
  water- 
  

   " 
  Low 
  * 
  mark 
  - 
  

  

  -f-. 
  Bone-bed. 
  

  

  B 
  CD 
  

  

  a. 
  Avicida 
  contorta 
  Series. 
  

  

  b. 
  White 
  Lias. 
  

  

  A 
  

  

  Thickness, 
  

  

  feet. 
  

  

  70 
  

  

  At 
  the 
  base 
  of 
  the 
  cliffs, 
  and 
  with 
  a 
  dip 
  of 
  35° 
  to 
  the 
  north, 
  decreasing 
  

   further 
  eastwards 
  to 
  15° 
  or 
  20° 
  ; 
  it 
  is 
  a 
  deep-red 
  marl 
  with 
  but 
  

   few 
  bands 
  and 
  spots 
  of 
  grey. 
  In 
  Watchet 
  Harbour 
  and 
  Donniford 
  

   Bay 
  it 
  abuts 
  against 
  the 
  Ammonites 
  planorbis 
  shales 
  that 
  have 
  been 
  

   thrown 
  down 
  to 
  the 
  south. 
  

   B. 
  84 
  A 
  series 
  of 
  red 
  and 
  grey 
  marls. 
  The 
  former 
  predominate 
  ; 
  the 
  latter 
  

   are 
  very 
  much 
  indurated. 
  

  

  Black 
  shale. 
  

  

  Grey 
  and 
  red 
  marls 
  in 
  nearly 
  equal 
  proportions. 
  

  

  Grey 
  indurated 
  marlstones 
  and 
  black 
  shales, 
  with 
  but 
  two 
  or 
  three 
  

   faint 
  bands 
  of 
  red. 
  

  

  The 
  latter 
  of 
  these, 
  representing 
  the 
  fossiliferous 
  beds 
  F 
  and 
  H 
  of 
  

   fig. 
  1, 
  yielded 
  no 
  fossils, 
  perhaps 
  from 
  my 
  being 
  unable 
  to 
  devote 
  so 
  

   much 
  time 
  to 
  its 
  examination 
  as 
  in 
  the 
  former 
  case. 
  But 
  its 
  barren- 
  

   ness 
  was 
  amply 
  compensated 
  for 
  by 
  the 
  richness 
  of 
  the 
  strata 
  above 
  

   the 
  bone-bed. 
  

  

  c. 
  

  

  ] 
  

  

  D. 
  

  

  30 
  

  

  E. 
  

  

  84 
  

  

  Section 
  

  

  of 
  Mhostic 
  Beds 
  and 
  White 
  L 
  

  

  las 
  to 
  the 
  East 
  of 
  Watchet. 
  

  

  No- 
  

  

  1. 
  

  

  2. 
  

   3. 
  

  

  Thick- 
  

   ness. 
  

  

  Description. 
  

  

  Fossils. 
  

  

  Inches. 
  

  

  1-2 
  

  

  24 
  

   1-2 
  

  

  Bone-bed 
  — 
  a 
  thin 
  film 
  of 
  con- 
  

   glomerate 
  deposited 
  upon 
  the 
  

   water-iworn 
  surface 
  of 
  a 
  green- 
  

   ish-grey 
  sandy 
  marlstone, 
  peb- 
  

   bles 
  of 
  which 
  are 
  included 
  in 
  it. 
  

  

  Sandy 
  marl, 
  passing 
  into 
  shale 
  in 
  

   its 
  upper 
  part. 
  

  

  Shelly 
  limestone, 
  somewhat 
  ir- 
  

   regular. 
  

  

  Acrodus 
  minimus. 
  

  

  Acrodus 
  acutus. 
  

  

  Gyrolepis 
  Alberti. 
  

  

  Gyrolepis 
  tenuistriatus. 
  

  

  Avicida 
  contorta. 
  

  

  Organic 
  remains 
  the 
  same 
  as 
  1. 
  

  

  Pleurophorus 
  elongatus. 
  

  

  