520  PRE-CAMBRIAN    GEOLOGY   OF    NORTH   AMERICA. 
of  the  clastic  series  of  southern  New  Brunswick.  In  degree  of  meta- 
morphism  and  in  the  presence  of  volcanic  rocks  the  areas  are  some- 
what similar. 
SECTION  4.     GASPE  PENINSULA. 
SUMMARY   OF  LITERATURE. 
Ells,86  in  1885,  describes  the  pre-Cambrian  rocks  of  the  Gaspe 
Peninsula.  These  are  confined  to  the  Shickshock  Mountains.  They 
are  garnetiferous  gneiss,  hornblendic,  chloritic,  and  micaceous  schists, 
epidosite,  etc.  These  rocks  are  so  like  the  pre-Cambrian  as  seen  in 
New  Brunswick  and  other  parts  of  Canada  that  they  are  removed 
from  the  Quebec  group  and  assigned  to  an  older  horizon.  Serpen- 
tines, diorites,  and  granites  are  intrusives,  a  part  of  them  later  in  age 
than  Devonian. 
Low,S7  in  1885,  also  describes  the  pre-Cambrian  rocks  of  the  Gaspe 
Peninsula.  They  are  represented  by  the  metamorphic  schists  and 
slates  of  the  Shickshock  Mountains,  among  which  are  serpentine,  and 
several  beds  of  limestone,  one  of  them  being  90  feet  thick.  Great 
masses  of  granite  and  dikes  of  trap  are  found  in  these  series.  The 
granites  are  evidently  of  later  date  than  the  Silurian  and  Devonian 
rocks,  as  fragments  of  these  are  inclosed  in  them,  and  the  adjacent 
stratified  rocks  show  alteration. 
SUMMARY   OF  PRESENT  KNOWLEDGE. 
In  the  Shickshock  Mountains,  on  the  Gaspe  Peninsula,  are  garnet- 
iferous gneiss,  hornblendic,  chloritic,  and  micaceous  schists,  slates, 
limestones,  and  serpentine.  Intruded  in  these  rocks  are  found  great 
masses  of  granite  and  dikes  of  trap  newer  than  the  Silurian  or  Devo- 
nian, as  shown  by  inclosed  fragments  of  these  rocks.  No  attempt 
has  been  made  to  subdivide  the  rocks  of  this  area  into  series.  The 
character  of  the  rocks  mentioned  makes  it  probable  that  Algonkian 
rocks  occur  here,  and  the  Archean  may  also  be  represented. 
NOTES. 
1  First  report  on  the  geological  survey  of  the  Province  of  New  Brunswick,  by 
Abraham  Gesner,  pp.  87. 
2  Second  report  on  the  geological  survey  of  the  Province  of  New  Brunswick,  by 
Abraham  Gesner,  pp.  76. 
3  Third  report  on  the  geological  survey  of  the  Province  of  New  Brunswick,  by 
Abraham  Gesner,  pp.  88. 
4  Fourth  report  on  the  geological  survey  of  the  Province  of  New  Brunswick,  by 
Abraham  Gesner,  pp.  101. 
5  Report  on  the  geological  survey  of  the  Province  of  New  Brunswick,  with  a 
topographical  account  of  the  public  lands,  by  Abraham  Gesner,  pp.  88. 
6  Report  on  the  agricultural  capabilities  of  the  Province  of  New  Brunswick,  by 
J.  F.  W.  Johnston,  pp.  262,  accompanied  by  a  soil  map. 
