﻿404 
  PKOCEE.DI.NGS 
  OF 
  TILE 
  GEOLOGICAL 
  SOCIETY. 
  [Jlllie 
  8, 
  

  

  White 
  Lias 
  some 
  8 
  feet 
  in 
  depth. 
  It 
  yielded 
  the 
  usual 
  fossils, 
  

   namely, 
  Modiola 
  minima, 
  Cardium 
  Rhceticum, 
  and 
  Montlivaltia. 
  

   Among 
  the 
  debris 
  thrown 
  out 
  from 
  one 
  " 
  hut-circle 
  " 
  were 
  fragments 
  

   of 
  the 
  "bone-bed" 
  — 
  a 
  quartz-conglomerate 
  containing 
  Gyrolepis 
  

   Alberti 
  and 
  Acrodus 
  minimus, 
  which 
  proved 
  that 
  the 
  unknown 
  

   quarrymen 
  had 
  passed 
  some 
  16 
  or 
  20 
  feet 
  into 
  the 
  Avicula 
  contorta 
  

   beds 
  below. 
  There 
  can 
  be 
  no 
  doubt 
  in 
  this 
  case, 
  as 
  in 
  the 
  previous 
  

   section 
  at 
  Snake 
  Lane, 
  that 
  the 
  White 
  Lias 
  rests 
  immediately 
  upon 
  

   the 
  Rhaetic 
  beds, 
  without 
  any 
  trace 
  of 
  the 
  Ammonites-piano 
  rb 
  is 
  - 
  

   bearing 
  rocks, 
  or 
  Saurian 
  beds. 
  

  

  5. 
  Poulden 
  Hills, 
  Turn 
  Hill, 
  Langport, 
  Hatch. 
  — 
  Throughout 
  the 
  

   whole 
  southern 
  scarp 
  of 
  the 
  Poulden 
  Hills, 
  from 
  Dunball 
  on 
  the 
  

   west, 
  where 
  there 
  is 
  a 
  good 
  section 
  in 
  the 
  railway-cutting, 
  past 
  

   Moorlinch 
  and 
  Greinton, 
  the 
  White 
  Lias 
  is 
  seen 
  resting 
  immediately 
  

   on 
  the 
  Avicula 
  contorta 
  beds, 
  the 
  grey 
  and 
  variegated 
  marls 
  forming 
  

   the 
  lower 
  two-thirds 
  of 
  the 
  ancient 
  Post-pliocene 
  sea-cliff. 
  Thence, 
  

   after 
  passing 
  up 
  the 
  river 
  Carey 
  as 
  far 
  as 
  Charlton 
  Mackarel, 
  and 
  

   being 
  brought 
  up 
  by 
  a 
  fault 
  among 
  the 
  Ammonites 
  planorbis 
  shales 
  

   near 
  King 
  Weston, 
  it 
  caps 
  the 
  promontory 
  of 
  Turn 
  Hill, 
  and 
  forms 
  

   a 
  considerable 
  portion 
  of 
  the 
  Liassic 
  spread 
  from 
  High 
  Ham 
  to 
  

   Langport. 
  

  

  The 
  ascent 
  of 
  Turn 
  Hill 
  presents 
  a 
  section 
  which 
  may 
  be 
  con- 
  

   sidered 
  representative 
  of 
  the 
  beds 
  in 
  the 
  Yale 
  of 
  Bridgewater. 
  

  

  Section 
  at 
  Tarn 
  Hill. 
  

  

  Feet. 
  

  

  A. 
  Red 
  marl 
  

  

  B. 
  Red 
  and 
  grey 
  maris, 
  red 
  predominating 
  62 
  

  

  C. 
  Alternations 
  of 
  red 
  and 
  grey 
  marls, 
  the 
  grey 
  predominating 
  . 
  . 
  20 
  

  

  D. 
  Alternations 
  of 
  grey 
  and 
  black 
  marls, 
  with 
  a 
  few 
  faint 
  bands 
  of 
  red 
  20 
  ? 
  

  

  The 
  section 
  is 
  here 
  obscured 
  by 
  the 
  detritus 
  of 
  the 
  soft 
  Lower 
  

   Avicula-contorta 
  shales. 
  

  

  Thickness, 
  

   feet, 
  inches. 
  

  

  1. 
  Hard 
  shelly 
  limestone, 
  like 
  Wedmore 
  stone, 
  with 
  A. 
  contorta 
  

  

  2. 
  Grey 
  marly 
  shale 
  6 
  

  

  3. 
  Hard 
  grey 
  lias 
  6 
  

  

  4. 
  Grey 
  marly 
  shale 
  3 
  

  

  5. 
  Grey 
  lias 
  5 
  

  

  6. 
  Grey 
  marly 
  shale 
  4 
  

  

  7. 
  Grey 
  lias 
  3 
  

  

  8. 
  Grey 
  marly 
  shale 
  8 
  

  

  9. 
  Four 
  layers 
  of 
  grey 
  lias 
  1 
  9 
  

  

  10. 
  Grey 
  shale 
  1 
  8 
  

  

  1 
  1 
  . 
  Grey 
  lias 
  6 
  

  

  12. 
  Grey 
  shale 
  2 
  

  

  13. 
  Bluish 
  lias 
  8 
  

  

  14. 
  Grey 
  shale 
  2 
  

  

  15. 
  Blue 
  lias 
  8 
  

  

  16. 
  Shale 
  ? 
  

  

  The 
  beds 
  from 
  3 
  to 
  12 
  inclusive 
  yielded 
  the 
  usual 
  fossils 
  of 
  the 
  

   Wnite 
  Lias, 
  namely, 
  Modiola 
  Hillana 
  (juv.), 
  M. 
  minima, 
  Cardium 
  

   Rhceticum, 
  Montlivaltia, 
  and 
  Ostrca 
  intcrstriata, 
  together 
  with 
  an 
  

  

  