﻿454 
  

  

  E. 
  WILSON 
  ON 
  THE 
  KHtETICS 
  OF 
  NOTTINGHAMSHIRE. 
  

  

  Avicula-contorta 
  shales 
  pass 
  up 
  into 
  the 
  Upper 
  Hhaetic 
  marls 
  (18 
  feet) 
  

   and 
  theae 
  are 
  conformably 
  overlain 
  by 
  a 
  few 
  beds 
  of 
  the 
  Lower 
  Lias 
  

   containing 
  the 
  usual 
  fossils 
  of 
  the 
  zone 
  of 
  Ammonites 
  planorbis. 
  

   The 
  description 
  of 
  the 
  fossils 
  of 
  the 
  shales 
  and 
  bone-bed 
  of 
  the 
  

   Avicula-contorta 
  series 
  at 
  Stanton, 
  presently 
  to 
  be 
  given, 
  will 
  equally 
  

   well 
  apply 
  to 
  Barnston, 
  and 
  so 
  need 
  not 
  be 
  repeated 
  here. 
  Between 
  

   Barnston, 
  Elton, 
  and 
  Orston, 
  the 
  Lias-capped 
  Rhaetics 
  form 
  a 
  low 
  

   but 
  very 
  clearly 
  denned 
  escarpment 
  facing 
  west, 
  with 
  a 
  very 
  palpable 
  

   dip-slope 
  towards 
  the 
  vale 
  of 
  Belvoir. 
  At 
  the 
  boring 
  for 
  coal 
  now 
  

   in 
  progress 
  at 
  Owthorpe 
  near 
  Colston 
  Bassett, 
  beneath 
  33 
  feet 
  of 
  

   blue 
  shale 
  of 
  uncertain 
  geological 
  age, 
  14 
  feet 
  of 
  Paper-shales 
  and 
  

   then 
  19 
  feet 
  of 
  "Tea-green 
  marls" 
  were 
  penetrated. 
  

  

  Stanton 
  on 
  the 
  Wolds. 
  — 
  During 
  the 
  construction 
  of 
  the 
  new 
  Mid- 
  

   land 
  line 
  from 
  Nottingham 
  to 
  London, 
  I 
  noticed 
  the 
  Rhaatics 
  in 
  the 
  

   cutting 
  at 
  the 
  north 
  end 
  of 
  the 
  tunnel 
  at 
  Stanton 
  on 
  the 
  Wolds, 
  be- 
  

   tween 
  Nottingham 
  and 
  Melton 
  Mowbray. 
  The 
  following 
  section 
  

   was 
  exposed 
  at 
  that 
  point 
  : 
  — 
  

  

  Section 
  at 
  Stanton 
  on 
  the 
  Wolds. 
  

  

  Post- 
  

   Tertiary. 
  

  

  Avicu/a- 
  

  

  contort 
  a 
  

  

  shales 
  

  

  (Rhretic). 
  

  

  L 
  Boulder-clay 
  with 
  local 
  intercalations 
  of 
  drift-sand, 
  50 
  ft. 
  to 
  60 
  

  

  f 
  Shales 
  dark-coloured, 
  thickly 
  laminated, 
  with 
  a 
  few 
  thin 
  

   seams 
  of 
  sandstone 
  and 
  a 
  band 
  of 
  nodular 
  limestone 
  

   1 
  ft. 
  9 
  in. 
  from 
  base 
  : 
  Cassianella 
  contorta, 
  Axioms 
  clonga- 
  

  

  tus, 
  Protocardium 
  PhiUppianum 
  6 
  

  

  Pyritic 
  sandstone 
  ^ 
  in. 
  to 
  2£ 
  

  

  Shales 
  darker 
  and 
  more 
  thinly 
  laminated 
  than 
  the 
  over- 
  

   lying, 
  with 
  occasional 
  streaks 
  of 
  fine 
  white 
  sand 
  : 
  C. 
  con- 
  

   torta. 
  A. 
  clongatus, 
  P. 
  PhiUppianum 
  3 
  

  

  | 
  Pyritic 
  limestone, 
  with 
  A. 
  clongatus, 
  Modiola 
  minima, 
  

  

  fish-scales, 
  sun-cracks 
  \ 
  in. 
  to 
  1 
  

  

  j 
  Shales 
  black, 
  fissile, 
  with 
  thin 
  streaks 
  of 
  fine 
  grey 
  sand, 
  

  

  9in.to 
  10 
  

  

  Bone-bed, 
  or 
  coprolite-seam, 
  soft 
  white 
  sand 
  and 
  quartz- 
  

   pebbles 
  : 
  spines 
  of 
  Nemacanthus 
  filifer, 
  and 
  Hybodus, 
  

   sp. 
  ; 
  teeth 
  and 
  scales 
  of 
  Saurichthys 
  acuminatus, 
  Hy- 
  

   bodus 
  minor, 
  H. 
  rcticulatus, 
  Hybodus 
  sp., 
  Acrodus 
  mini- 
  

   mus, 
  Sargodon 
  tomicus, 
  Ceratodus 
  alius, 
  Gy 
  role-pis 
  tenui- 
  

   striata, 
  and 
  various 
  cestraciont 
  palatal 
  teeth 
  ; 
  teeth 
  

   and 
  coprolites 
  of 
  Ichthyosaurus 
  platyodon, 
  Ichthyosaurus- 
  

   sp., 
  and 
  other 
  reptilian 
  and 
  piscine 
  teeth, 
  vertebras, 
  

  

  bones, 
  and 
  coprolites 
  1 
  

  

  Shales 
  black, 
  fissile, 
  and 
  earthy 
  layers 
  alternating 
  1 
  4 
  

  

  Coprolite-seam, 
  earthy 
  ; 
  coprolites 
  at 
  wide 
  intervals 
  1 
  

  

  ^Shales 
  black, 
  laminated, 
  with 
  occasional 
  reptilian 
  bones... 
  1 
  3 
  

  

  Light-blue 
  marls 
  weathering 
  yellowish-green 
  and 
  breaking 
  

  

  up 
  into 
  cuboidal 
  fragments 
  ; 
  base 
  not 
  seen 
  20 
  

  

  Tea- 
  ^ 
  

  

  green 
  

  

  marls 
  )■ 
  

  

  (Upper 
  | 
  

  

  Keuper). 
  ) 
  

  

  The 
  Upper 
  Eheetic 
  marls 
  were 
  not 
  seen 
  in 
  situ 
  ; 
  but 
  limestone 
  nodules 
  with 
  

   Estheria 
  were 
  found 
  in 
  the 
  overlying 
  drift. 
  

  

  Comparison 
  of 
  this 
  and 
  the 
  other 
  Notts 
  Rhaetic 
  sections 
  with 
  the 
  

   Gainsboro' 
  section 
  leads 
  me 
  to 
  conclude 
  that 
  the 
  15 
  feet 
  or 
  so 
  of 
  

  

  