OF CEXTRAL CANADA PART V. 355 



APPENDIX. 



Sequence of Rock Formations recognized within the Provinces of 

 Ontario and Quebec. 



POST-CAINOZOIC FORMATIONS : 



24. Deposits of Recent Origin. 



23. Post-Glacial Deposits. 



22. Drift or Glacial Deposits. 

 PALAEOZOIC FORMATIONS : 

 Carboniferous : 



21. Bonaventure Fn. 

 Devonian : 



20. Portage-Ckemimg Fn. 



1 9. Hamilton (or Lambton) Fn. 



18. Corniferous Fn. 



17. Oriskany Fn. 

 Upper Silurian : 



1 6. Lower Helderberg or Eurypterus Fn. 



15. Oiiondaga or Gypsiferous Fn. 



14. Guelph Fn. 



13. Niagara Fn. 



12. Clinton Fn. 



11. Medina Fn. 



Lower (or Cambrio-) Silurian : 

 10. Hudson River Fn. 



9. UticaFn. 



8. ,Trenton (and Black River) Fn. 



7. Chazy Fn. 

 Cambrian : 



6. Calciferous (including Quebec) Fn. 



5. Potsdam Fn. 



4. Keweenian Fn. 



3. Animikie Fn. 

 ARCHAEAN FORMATIONS : 



2. Hnronian Fn. 



1. Laurentian Fn. 



