﻿PROF. 
  C. 
  LAPWORTH 
  ON 
  THE 
  G1RVAN 
  SUCCESSION. 
  

  

  559 
  

  

  These 
  results 
  are 
  epitomized 
  in 
  the 
  following 
  table 
  : 
  — 
  

  

  Ac. 
  Benan-Hill 
  (or 
  Green) 
  Conglomerate. 
  

   Stinchar 
  Limestone 
  group 
  : 
  — 
  

  

  Ab 
  4 
  . 
  Did?/moc/raptus-sh.&les. 
  

  

  Ab 
  3 
  . 
  Compact 
  Limestones. 
  

  

  Ab 
  2 
  . 
  Maclurea-be&s. 
  

  

  Ab 
  1 
  . 
  Ortkia-confinis 
  Flags. 
  

   Kirkland 
  group: 
  — 
  

  

  Aa 
  2 
  . 
  Transitional 
  Sandstones 
  and 
  Grits. 
  

  

  Aa\ 
  Purple 
  (or 
  Kirkland) 
  Conglomerate. 
  

  

  I 
  shall 
  next 
  proceed 
  to 
  show 
  that 
  the 
  sequence 
  thus 
  indicated 
  is 
  

   that 
  which 
  obtains 
  throughout 
  the 
  entire 
  Benan 
  area. 
  

  

  2. 
  Kirkland 
  Burn. 
  — 
  An 
  excellent 
  confirmatory 
  exposure 
  of 
  the 
  

   majority 
  of 
  the 
  strata 
  just 
  described 
  is 
  to 
  be 
  seen 
  in 
  the 
  neighbouring 
  

   stream 
  of 
  Kirkland 
  Burn, 
  which 
  has 
  cut 
  a 
  deep 
  channel 
  down 
  the 
  

   slope 
  of 
  Benan 
  Hill, 
  about 
  half 
  a 
  mile 
  to 
  the 
  eastward 
  of 
  our 
  former 
  

   section. 
  In 
  this 
  locality, 
  however, 
  the 
  green 
  Benan 
  conglomerate 
  is 
  

   shown 
  merely 
  in 
  a 
  few 
  scattered 
  patches 
  upon 
  the 
  hill-tops, 
  the 
  

   line 
  of 
  junction 
  between 
  the 
  calcareous 
  group 
  and 
  the 
  Benan 
  conglo- 
  

   merate 
  is 
  invisible, 
  and 
  merely 
  a 
  few 
  fragments 
  are 
  seen 
  of 
  the 
  

   Didymo(/raj)tus-sh.ale8 
  (Ab 
  1 
  ) 
  and 
  of 
  the 
  upper 
  parts 
  of 
  the 
  Compact 
  

   Limestone 
  (Ab 
  3 
  ) 
  (see 
  section 
  below, 
  fig. 
  2). 
  

  

  S.E. 
  

  

  Fig. 
  2. 
  — 
  Confirmatory 
  Section 
  in 
  Kirkland 
  Burn. 
  

  

  ■Waler/kU 
  

  

  NYW. 
  

  

  Ac. 
  Green 
  Conglomerate 
  of 
  Benan 
  Hill. 
  

  

  Ab 
  4 
  . 
  Green 
  Graptolitic 
  Shales. 
  

  

  Ab 
  2 
  . 
  Impure 
  flaggy 
  Limestones. 
  

  

  Ab 
  1 
  . 
  Calcareous 
  and 
  nodular 
  Flagstones, 
  with 
  Orthis 
  confinis, 
  Stro- 
  

  

  phomena, 
  &c. 
  

   Aa 
  2 
  . 
  Purple 
  Sandstones, 
  Grits, 
  and 
  sandy 
  Shales. 
  

   Aa 
  1 
  . 
  Purple 
  Conglomerate 
  filled 
  with 
  veins 
  of 
  calc-spar. 
  

  

  The 
  highest 
  beds 
  visible 
  appear 
  to 
  be 
  the 
  lowest 
  zones 
  of 
  the 
  

   Maclurea-beds 
  (Ab 
  2 
  ), 
  which 
  are 
  well 
  shown 
  where 
  a 
  small 
  fence 
  

   crosses 
  the 
  stream. 
  From 
  this 
  point 
  downwards 
  into 
  the 
  heart 
  of 
  the 
  

   deep-seated 
  Purple 
  Conglomerate 
  (Aa 
  1 
  ) 
  the 
  section 
  is 
  tolerably 
  con- 
  

  

  