﻿E. 
  WILSON 
  ON 
  THE 
  RH^ETICS 
  OF 
  NOTTINGHAMSHIRE. 
  453 
  

  

  miles 
  long* 
  by 
  \ 
  to 
  2 
  miles 
  wide. 
  The 
  idea 
  of 
  such 
  a 
  localized 
  ex- 
  

   tension 
  along 
  the 
  strike 
  is 
  certainly 
  erroneous 
  and 
  has 
  since 
  been 
  

   abandoned. 
  The 
  southerly 
  continuation 
  of 
  these 
  beds 
  in 
  Lincoln- 
  

   shire 
  is, 
  indeed, 
  indicated 
  by 
  the 
  low 
  escarpment 
  which 
  lies 
  not 
  far 
  

   from 
  the 
  eastern 
  bank 
  of 
  the 
  Trent. 
  

  

  Newark. 
  — 
  Bhaetics 
  are 
  exposed 
  in 
  the 
  gypsum 
  quarries 
  on 
  Beacon 
  

   Hill, 
  Newark, 
  Notts. 
  This 
  section 
  also 
  is 
  incomplete 
  above. 
  About 
  

   10 
  feet 
  of 
  " 
  Paper-shales 
  " 
  (with 
  casts 
  of 
  Cassianella 
  contorta 
  and 
  

   Axinus 
  elongatus), 
  without 
  any 
  sandstones 
  or 
  bone-bed, 
  are 
  seen 
  to 
  

   rest 
  iviih 
  a 
  sharp 
  line 
  of 
  demarcation 
  on 
  light 
  green 
  marls 
  14 
  or 
  15 
  

   feet 
  in 
  thickness 
  (the 
  Lower 
  Bhaetics 
  of 
  some 
  authors). 
  These 
  green 
  

   marls 
  appear 
  to 
  graduate 
  down 
  into 
  the 
  underlying 
  red 
  gypsiferous 
  

   marls 
  of 
  the 
  Upper 
  Keuper 
  series. 
  Mr. 
  Woodward, 
  on 
  having 
  an 
  old 
  

   lime-pit 
  in 
  the 
  Lias 
  deepened, 
  found 
  the 
  uppermost 
  zone 
  of 
  the 
  Bhaetic 
  

   series 
  (White 
  Lias) 
  in 
  situ. 
  

  

  The 
  cuttings 
  of 
  the 
  new 
  Great 
  Northern 
  line 
  between 
  Newark 
  and 
  

   Bottesford, 
  which 
  for 
  some 
  distance 
  roughly 
  followed 
  the 
  Bhaetic 
  out- 
  

   crop, 
  exposed 
  several 
  good 
  sections 
  in 
  these 
  rocks. 
  

  

  Cotham 
  and 
  Kilvington. 
  — 
  At 
  Gotham, 
  4 
  miles 
  south 
  of 
  Newark, 
  

   a 
  complete 
  section 
  of 
  the 
  Bhaetic 
  rocks 
  of 
  the 
  district 
  was 
  exposed. 
  

   At 
  the 
  south 
  end 
  of 
  the 
  cutting 
  the 
  green 
  marls 
  of 
  the 
  Upper 
  Keuper 
  

   appeared, 
  succeeded, 
  going 
  north, 
  by 
  Avicula-contorta 
  shales 
  (15 
  feet), 
  

   with 
  no 
  sandstones 
  or 
  bone-bed 
  and 
  hardly 
  the 
  trace 
  of 
  a 
  fossil 
  of 
  

   any 
  kind, 
  and 
  these 
  by 
  Upper 
  Bhaetic 
  marls 
  (18 
  or 
  19 
  feet). 
  At 
  

   the 
  road-crossing 
  near 
  the 
  station, 
  the 
  northerly 
  dip 
  brought 
  in 
  Lower 
  

   Lias, 
  represented 
  by 
  20 
  feet 
  or 
  so 
  of 
  limestones 
  and 
  shales, 
  contain- 
  

   ing, 
  amongst 
  other 
  fossils, 
  Ammonites 
  planorbis, 
  Modiola, 
  minima. 
  

   Ostrea 
  liassica, 
  Pleuromya 
  costata, 
  and 
  Lima 
  gigantea. 
  About 
  a 
  mile 
  

   farther 
  south 
  Upper 
  Bhaetic 
  marls 
  were 
  again 
  seen 
  capped 
  by 
  a 
  few 
  

   feet 
  of 
  Lias. 
  In 
  the 
  next 
  cutting 
  further 
  south 
  (near 
  Staunton 
  

   Grange) 
  the 
  Bhaetics 
  were 
  shut 
  out 
  by 
  a 
  fault 
  which 
  brought 
  up 
  

   Upper 
  Keuper 
  red 
  marls 
  on 
  the 
  south 
  against 
  Liassic 
  strata 
  on 
  the 
  

   north 
  ; 
  but 
  still 
  further 
  south, 
  in 
  the 
  Kilvington 
  cutting, 
  Paper-shales 
  

   reappeared 
  just 
  north 
  of 
  the 
  road-crossing, 
  succeeded 
  by 
  Upper 
  

   Bhaetic 
  marls 
  (17 
  or 
  18 
  feet) 
  and 
  capped 
  by 
  Lower 
  Lias. 
  In 
  a 
  lime- 
  

   stone 
  nodule 
  from 
  the 
  top 
  of 
  the 
  Upper 
  Bhaetic 
  marls, 
  I 
  here 
  found 
  

   Estheria 
  minuta 
  in 
  vast 
  numbers. 
  si 
  Orston 
  Spa," 
  near 
  by, 
  is 
  a 
  fer- 
  

   ruginous 
  spring 
  that 
  is 
  in 
  all 
  probability 
  thrown 
  out 
  by 
  a 
  pyritic 
  

   sandstone 
  or 
  bone-bed 
  in 
  the 
  Paper-shales. 
  At 
  Elton 
  station 
  Upper 
  

   Bhaetic 
  marls 
  may 
  be 
  seen, 
  succeeded 
  by 
  Lower 
  Lias 
  strata 
  ; 
  and 
  in 
  

   the 
  grass-grown 
  cutting 
  west 
  of 
  the 
  station 
  the 
  Bhaetic 
  Paper-shales, 
  

   with 
  a 
  bone-bed 
  at 
  the 
  base, 
  lie 
  concealed. 
  

  

  Barnston. 
  — 
  At 
  Barnston, 
  4 
  miles 
  south 
  of 
  Elton, 
  a 
  capital 
  section 
  

   in 
  the 
  Bhaetics 
  was 
  opened 
  out 
  during 
  the 
  construction 
  of 
  the 
  new 
  

   line 
  from 
  Bingham 
  to 
  Stathern. 
  Here 
  the 
  Upper 
  Keuper 
  red 
  gyp- 
  

   siferous 
  marls, 
  with 
  the 
  usual 
  "Tea-green 
  marls" 
  above, 
  were 
  over- 
  

   lain, 
  with 
  the 
  usual 
  sharp 
  line 
  of 
  division, 
  by 
  the 
  Avicula-contorta 
  

   shales 
  (14 
  or 
  15 
  feet), 
  containing 
  a 
  few 
  thin 
  bands 
  of 
  sandstone 
  and 
  

   a 
  hard 
  pyritic 
  bone-bed, 
  V 
  6" 
  from 
  the 
  base, 
  replete 
  with 
  the 
  usual 
  

   fish- 
  and 
  reptilian 
  remains 
  — 
  amongst 
  others 
  Ceratodus 
  alius. 
  The 
  

  

  