2l6 



RELICS OF PRIMEVAL LIFE 





''He' 



Pre-Pahcozoic Rocks of Southern New Brunswick ^ 

 as tabulated by Matthew : — 



z 

 < 



I 

 o 

 oc 

 < 



o 



o 



N 



o 



Thickness 

 Feet. 



Coastal series (or system), 1872.— 

 Grits, liydromicaschists, argillites, etc. ; 

 resembling the Pebidian rocks of Dr. H. 

 Hicks 10,000 



COLDHROOK SERIES (OR SYSTEM), 1 805. — 



Dioritcs, felsites, petrosilex, etc. ; re- 

 sembling the Arvonian rocks of Dr. 

 Hicks. Thickness more than .... 15,000' 

 Upper series (or system) of Lauren- 



TIAN, 1872. 



Upper division. — Argillites, lime- 

 stones, graphitic shales. Fossils. In 

 upper part of the upper limestones of the 

 South basin, fragmental Eozoott, observed 

 by Sir J. W. Dawson in specimens sent 

 him. In middle of upper limestones in 

 Middle basin, spicules of sponges. In 

 graphitic shale of South basin, spicules 

 of Halichondritcs graphHiferus. In low- 

 est limestone of the Middle basin, the 

 reef of columnar fossils described as 

 Archa^ozoon . 740 



Middle division. — Quartzites, sili- 

 cious schists, Fossils Cyathospongia (?) 

 eozoica near the top of this division . . 450 



Lower division. — Limestones and 



gneisses. No Fossils known 260' 



Lower series of Laurentian.— 

 Gneisses, Micaschists, etc ? 



* The above thicknesses are on the authority of Dr. L. 

 W. Bailey. Report Progress Geological Survey Canada^ 1879, 



