Yol.  49.] 
THE  KEEP  EE  IX  DETOX. 
81 
calcareous  concretionary  masses  were  observed  as  I  described  in  my 
1888  paper  (p.  153),  occurring  below  tbe  breccia  at  Otterton  Point, 
At  tbe  farmhouse  known  as  Burnt  House  (marked  hlanyard  on 
the  older  maps)  we  descended  to  the  alluvium  of  the  river.  On 
reaching  the  point  where  the  river  strikes  against  the  red  cliff  on 
its  left  bank,  the  calcareous  concretionary  masses  were  again  seen 
in  the  reddish  sandstone,  which  has  a  decidedly  Upper  Banter  facies. 
Here  the  breccia  was  again  found  at  about  50  feet  above  Ordnance 
datum  surmounting  these  beds,  and  partly  concealed  by  the  vegeta¬ 
tion  which  covers  the  hill-slope  above.  The  rocks  appeared  to  have 
been  let  down  by  a  small  landslip,  as  we  were  unable  to  trace  the 
continuance  of  the  breccia-zone  in  the  inaccessible,  clean  sandstone- 
escarpment  which  overhangs  the  river  immediately  to  the  south. 
Less  than  a  quarter  of  a  mile  farther  north  the  same  sequence  of 
Bunter  Sandstone  surmounted  by  the  breccia  was  seen  :  and  from 
the  bench-mark  on  the  roadside  above  this  spot  we  estimated  the 
breccia  to  be  at  about  70  feet  (O.D.).  Here,  at  a  somewhat  higher 
level  than  at  the  spot  last  mentioned,  it  was  evidently  in  place. 
In  Halse’s  Lane,  which  strikes  up  the  hill  to  the  east,  just  before 
reaching  Passaford,  there  is  one  of  the  most  complete  exposures 
of  the  breccia  seen  perhaps  anywhere  in  Devonshire.  It  projects, 
with  a  varying  thickness,  for  several  yards  along  the  sides  of  the 
higher  part  of  the  lane,  the  soft  Bunter  rock  below  it  having  been 
much  worn  down  by  weathering  since  the  lane-cutting  was  made. 
A  second  lane-cutting  strikes  southward  from  this,  exposing  the 
breccia  at  a  lower  level,  and  with  an  abnormal  dip,  nearly  south, 
of  d2  or  6°.  This  exposure  probably  owes  its  position  to  some  local 
faulting,  though  the  faults  are  obscured  by  the  overgrowth  of 
vegetation  on  the  hill-face. 
Passing  Houghton,  we  again  found  the  breccia  at  the  comer  of 
the  road  near  Horthmoston  Farm.  After  that  no  more  exposures 
are  met  with  along  the  road  until  Xewton  Poppleford  is  reached. 
In  a  cutting  of  the  road,  which  strikes  north  at  the  eastern  end  of 
this  village  to  Harpford,  the  same  hard  breccia,  about  2  feet  thick, 
is  seen  near  the  bottom  of  the  cutting,  at  about  90  feet  (O.D.  , 
The  vertical  rock-walls  of  the  cutting  offer  great  facilities  for 
examining  the  relation  of  the  breccia  to  the  overlying  Heuper  Beds, 
and  for  observing  its  irregularity  in  thickness  and  its  repetition 
upwards  in  one  or  two  places.  In  this  cutting  also  there  are  good 
exposures  of  the  overlying  Lower  Heuper  Sandstones,  which  are 
seen  to  consist  here  (for  8  or  10  feet)  of  soft,  variegated,  strongly 
current-bedded,  brec-ciated  sandstone.  In  no  section  in  Devon  have 
I  seen  the  brecciated  character  of  the  sandstones  at  this  horizon  so 
strongly  marked ;  and,  after  the  observations  made  here.  I  am 
inclined  to  regard  the  brecciated  and  pebbly  sandstones  lower  down 
the  river,  near  its  mouth,  which  are  mentioned  in  my  1888  paper 
(be.  supra  cit.),  as  in  reality  belonging  to  the  Heuper  basement- 
beds,  though  there  referred  to  the  Upper  Bunter. 
Horth  of  Harpford  there  are  some  exposures  of  the  Heuper  rocks, 
and  the  Upper  Bunter  is  seen  in  good  lane-sections  between  Tipton 
Q.  J.  G.  8.  Ho.  193.  g 
