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COAST-SECTIONS  AT  THE  LIZAED. 
[May  1893, 
Y.  Summary  oe  Results. 
Ogo  Dour  District. 
(1)  The  hornblende-schist  and  serpentine  of  the  Ogo  Dour  district 
form  together  a  banded  complex  of  crystalline  foliated  rocks. 
(2)  The  relative  ages  of  hornblende -schist  and  serpentine  cannot 
be  satisfactorily  determined,  but  the  occurrence  of  lenticles  of 
serpentine  in  hornblende-schist  points  to  the  conclusion  that, 
if  there  he  any  difference  in  age,  the  serpentine  is  the  earlier. 
(3)  The  complex  of  schist  and  serpentine  has  been  folded  after  the 
handing  was  produced,  and  before  the  dykes  were  intruded. 
Some,  if  not  all,  of  this  folding  probably  took  place  when  the 
complex  was  formed. 
(4)  The  schist  and  the  serpentine  have  been  traversed  by  dolente- 
dykes.  . 
(5)  These  dykes  have  themselves  been  converted  into  schists  which 
are  macroscopically  indistinguishable  from  portions  of  the 
normal  hornblende-schist  of  the  Lizard  Peninsula. 
(6)  The  district  has  been  faulted  after  the  dykes  had  reached  their 
present  condition. 
Lion  Lock  District. 
(1)  Basic  dykes  and  a  gabbro-vein  may  be  observed  traversing  the 
serpentine  in  the  cliff  immediately  east  of  the  Lion  Bock. 
(2)  These  dykes  pass  in  places  into  hornblende-schist. 
(3)  They  vary  in  thickness,  and  in  some  of  the  thicker  portions  put 
on  appearances  which  are  characteristic  of  the  Granulitic 
Series.  . 
(4)  One  wedge-shaped  mass  of  typical  granulitic  rock  is  seen  m  the 
section. 
(5)  The  structure  of  this  mass  appears  to  be  incompatible  with  the 
theory  that  the  serpentine  was  intruded  into  solid  granulitic 
rock. 
