﻿PROP. 
  C. 
  LAPWORTH 
  ON 
  THE 
  GIRVAN 
  SUCCESSION. 
  

  

  661 
  

  

  Fig. 
  31 
  (continued). 
  

  

  | 
  ( 
  (d) 
  Drummuck 
  Group, 
  200 
  fit. 
  

  

  (c) 
  Barren 
  Flagstones, 
  800 
  ft 
  

   (e) 
  Upper 
  beds 
  

  

  (6) 
  Middle 
  beds 
  

  

  (a) 
  Lower 
  beds 
  

  

  (b) 
  Whitehouse 
  Group, 
  300 
  ft. 
  

  

  (b) 
  Variegated 
  mudstones 
  .. 
  

  

  (a) 
  Cement™ 
  stone 
  Group 
  

  

  («) 
  Ardweel 
  Group, 
  1200 
  ft. 
  

   3. 
  Cascade-grits 
  and 
  shales.. 
  

  

  Dark 
  grey 
  mudstones, 
  with 
  occasional 
  flaggy 
  bands, 
  

   with 
  Trinucleus 
  BucTclandi, 
  Ampyx 
  rostratus. 
  

  

  Thick-bedded 
  pale 
  

   buff-weathering 
  

  

  with 
  intermediary 
  bands 
  of 
  

   —Dipl. 
  truncatus. 
  

  

  Thick-bedded 
  grey 
  flagstones, 
  with 
  partings 
  of 
  green 
  

   and 
  grey 
  shales. 
  No 
  fossils. 
  

  

  Green 
  sbales, 
  with 
  occasional 
  flaggy 
  bands.— 
  Nemato- 
  

   lites, 
  sp. 
  

  

  Eed 
  mudstones, 
  grey, 
  green, 
  and 
  black 
  shales. 
  [&c. 
  

   Dionide, 
  Ampyx, 
  Asaphus,2Eglina,Dicell. 
  complanatus, 
  

  

  Striped 
  grey 
  shales 
  and 
  mudstones, 
  with 
  cement-bands. 
  

   —Leptograptusflaccidiis, 
  Brachiopoda. 
  

  

  Coarse 
  grits, 
  with 
  thick 
  zones 
  of 
  striped 
  shales. 
  — 
  

   Dicellograpius 
  Forchhammeri, 
  Climac. 
  caudatus. 
  

  

  2. 
  Middle 
  Ardwell 
  beds 
  

  

  1 
  Knockgerran 
  shales 
  

  

  (d) 
  Balceatchie 
  Beds, 
  100 
  ft. 
  

  

  (5) 
  Grits 
  and 
  conglomerate 
  

  

  (a) 
  Fossiliferous 
  mudstones 
  .. 
  

  

  (c) 
  Benan 
  Conglomerate, 
  500 
  ft. 
  

  

  [150 
  ft. 
  

   (6) 
  Stinchar 
  Limestone 
  Group, 
  

  

  4. 
  Didymograptus-ahales 
  

  

  3. 
  Compact 
  limestones 
  

  

  2. 
  Maclurea-beds 
  

  

  1. 
  Orthis-confinis 
  beds 
  

  

  (a) 
  Kirkeand 
  Conglomerate, 
  100 
  ft 
  

  

  2. 
  Transitional 
  sandstones 
  

  

  1 
  . 
  Purple 
  boulder-conglomerate 
  . 
  

  

  Ballantrae 
  Rocks 
  

  

  : 
  5 
  Zones 
  of 
  hard, 
  dark, 
  slaty 
  flags, 
  with 
  seams 
  and 
  bands 
  

   of 
  dark 
  flaggy 
  shales. 
  — 
  Dicranograptus 
  ratnosus, 
  Di- 
  

   plograptus 
  rvgosus. 
  

  

  Dark 
  carbonaceous 
  and 
  pyritous 
  shales, 
  with 
  occa- 
  

   sional 
  cement-bands. 
  — 
  Cryptograptus 
  tricornis, 
  Clv~ 
  

   macograptus 
  Schurenbergi. 
  

  

  .*°^ 
  Vt'-V 
  Ashy 
  grits 
  and 
  boulder-conglomerate, 
  with 
  thick 
  zone 
  

  

  sf^g 
  7 
  of 
  nodular 
  green 
  shales, 
  highly 
  fossiliferous. 
  

  

  Coarse 
  boulder-conglomerate 
  ; 
  matrix 
  sandy 
  or 
  gritty 
  ; 
  

   colour 
  usually 
  green 
  or 
  grey. 
  

  

  [perste/t, 
  Dicellograpius 
  sextans. 
  

   Calcareous 
  and 
  nodular 
  shales. 
  — 
  Didymograptus 
  su- 
  

   Hard 
  compact 
  flaggy 
  limestone, 
  non-fossiliferous. 
  

   Nodular 
  limestones, 
  with 
  Maclurea 
  Logani. 
  

   Impure 
  calcareous 
  beds, 
  with 
  Orthis 
  confinis 
  &c. 
  

   Purple 
  and 
  grey 
  sandstones 
  and 
  grits. 
  

  

  Boulder-conglomerate; 
  matrix 
  usually 
  calcareous; 
  

   colour 
  purple, 
  red, 
  or 
  white. 
  

  

  