﻿372 
  THE 
  LATE 
  MR. 
  A. 
  CHAMPERNOWNE 
  ON 
  THE 
  

  

  Creek, 
  there 
  are 
  some 
  veiy 
  old 
  excavations 
  which 
  I 
  have 
  noticed 
  

   myself, 
  but 
  could 
  not 
  then 
  understand 
  them. 
  The} 
  7 
  were 
  doubtless 
  

   worked 
  for 
  iron 
  long 
  before 
  the 
  memory 
  of 
  man. 
  The 
  tradition 
  of 
  

   the 
  inhabitants 
  carries 
  them 
  back 
  to 
  Roman 
  times. 
  In 
  one 
  of 
  these 
  

   Dr. 
  Pridham 
  discovered 
  a 
  specimen 
  of 
  OrtJioceras, 
  or 
  perhaps 
  Acti- 
  

   noceras, 
  with 
  the 
  siphuncle 
  inflated 
  between 
  the 
  septa 
  and 
  striated 
  

   internally, 
  a 
  Cardium-like 
  bivalve, 
  and 
  a 
  small 
  specimen 
  of 
  >Stro- 
  

   matopora, 
  all 
  converted 
  into 
  haematite, 
  besides 
  some 
  fibrous 
  speci- 
  

   mens 
  of 
  the 
  same. 
  On 
  Mr. 
  Studdy's 
  land 
  (Waddeton 
  Court*) 
  on 
  

   the 
  other 
  side 
  of 
  the 
  Dart, 
  and 
  also 
  near 
  Stoke 
  Gabriel, 
  limonite 
  

   has 
  been 
  found. 
  

  

  Relations 
  with 
  Devonian" 
  Limestones 
  and 
  Slates. 
  

   The 
  Northern 
  Limits. 
  

  

  Respecting 
  the 
  age 
  of 
  the 
  rocks, 
  of 
  which 
  so 
  very 
  inadequate 
  a 
  

   sketch 
  has 
  just 
  been 
  given, 
  we 
  find 
  much 
  that 
  is 
  suggestive 
  and 
  

   much 
  that 
  is 
  very 
  perplexing, 
  even 
  after 
  their 
  outlines 
  have 
  been 
  

   laid 
  down 
  on 
  the 
  map, 
  on 
  account 
  of 
  their 
  irregular 
  mode 
  of 
  

   occurrence. 
  

  

  In 
  examining 
  the 
  principal 
  sections 
  in 
  some 
  detail, 
  we 
  will 
  begin 
  

   with 
  the 
  east 
  bank 
  of 
  the 
  Dart 
  at 
  Totnes. 
  The 
  " 
  Red 
  Hill 
  " 
  quarry 
  

   has 
  been 
  already 
  mentioned 
  : 
  Mr. 
  Godwin- 
  Austen 
  noticed 
  this 
  quarry 
  

   as 
  showing 
  trap 
  resting 
  on 
  faulted 
  Devonian 
  limestone 
  and 
  slate 
  f 
  ; 
  

   whatever 
  appearance 
  the 
  quarry 
  may 
  have 
  presented 
  when 
  he 
  ex- 
  

   amined 
  it, 
  it 
  is 
  now 
  perfectly 
  clear 
  that 
  the 
  step-like 
  surface 
  of 
  the 
  

   limestone 
  is 
  not 
  due 
  to 
  step 
  faults, 
  but 
  that 
  it 
  has 
  been 
  eroded 
  into 
  

   small 
  crags 
  of 
  the 
  height 
  of 
  * 
  * 
  * 
  to 
  * 
  * 
  * 
  feet 
  on 
  the 
  outcrop 
  side, 
  

   the 
  intervening 
  hollows 
  having 
  been 
  filled 
  in 
  by 
  the 
  " 
  trap," 
  which 
  

   forms 
  all 
  the 
  upper 
  part 
  of 
  the 
  quarry. 
  The 
  limestone 
  beds 
  below 
  

   dip 
  E.-S. 
  at 
  * 
  * 
  *. 
  

  

  Interesting 
  as 
  this 
  section 
  is, 
  we 
  must 
  not 
  too 
  readily 
  assume 
  

   that, 
  because 
  of 
  the 
  disturbance 
  and 
  erosion 
  of 
  the 
  limestone, 
  a 
  geo- 
  

   logically 
  vast 
  space 
  of 
  time 
  necessarily 
  separates 
  the 
  two 
  rocks, 
  as 
  

   that 
  must 
  depend 
  upon 
  what 
  can 
  be 
  learned 
  respecting 
  the 
  upper 
  

   surfaces 
  of 
  the 
  overlying 
  mass, 
  whether, 
  in 
  fact, 
  we 
  can 
  find 
  them 
  

   dipping 
  beneath 
  higher 
  members 
  of 
  the 
  Devonian 
  series. 
  

  

  Tracing 
  the 
  line 
  between 
  the 
  limestone 
  and 
  superincumbent 
  rocks, 
  

   we 
  find 
  it 
  extending 
  nearly 
  to 
  Truestreet, 
  where 
  it 
  is 
  shifted 
  further 
  

   to 
  the 
  south-east 
  by 
  a 
  N.W.-S.E. 
  fault 
  passing 
  Weston 
  with 
  upcast 
  on 
  

   the 
  east. 
  Eor 
  the 
  details 
  of 
  this 
  broken 
  bit 
  of 
  ground 
  I 
  must 
  refer 
  

   to 
  the 
  map. 
  Thence 
  the 
  upper 
  rocks 
  continue 
  to 
  Langcombe 
  Cross. 
  

   The 
  great 
  N.W.-S.E. 
  fault 
  from 
  Gatcombe 
  to 
  Stoke 
  Gabriel 
  here 
  

   cuts 
  them 
  off; 
  they 
  cannot 
  be 
  traced 
  further 
  to 
  the 
  north-east 
  in 
  their 
  

   line 
  of 
  strike. 
  So 
  far 
  there 
  have 
  been 
  signs 
  of 
  discordant 
  relations, 
  

   but 
  perhaps 
  not 
  greater 
  than 
  we 
  might 
  expect 
  to 
  find 
  in 
  a 
  reef 
  

   district, 
  supposing 
  it 
  to 
  have 
  been 
  also 
  the 
  arena 
  of 
  contemporaneous 
  

   volcanic 
  outbursts. 
  

  

  * 
  Walton 
  Court 
  on 
  the 
  Ordnance 
  Map. 
  

  

  t 
  Trans. 
  Geol. 
  Soc. 
  2nd 
  series, 
  vol. 
  vi. 
  pi. 
  xlii. 
  fig. 
  4. 
  

  

  