264 



GEOLOGY. 



Section in Southeastern Newfoundland. — Continued. 



Thickness in Feet. 



Characteristics. 





100 



Hard thick beds of gray, and sometimes reddish limestone; 

 Lower Cambrian fossils. 





250 



Red, green, and blackish argillaceous slates. 





50 



Conglomerate of Manuel's brook, not recognized elsewhere. 





150 



Red and green argillaceous shales or slates. 



9 



20 



Red and flesh-colored limestone; obscure fossils. 



"S 



30 



Red slate. 



■a 



10 



Impure limestone. 



r^ 



40 



Red slate. 



u 



750 



Red, green, and gray sandstones, with occasional beds of 



% 





conglomerate; upper beds flaggy. 



>A 



137 



Green and reddish-brown or purple slates. 





3 



Impure flesh-colored limestone. 





10 



Green slate. 





600 



Hard, dark, green-gray thin-bedded sandstones with slaty 







divisions. 





Unconformity. 







Proterozoic and 







Archean. 





Strata dip at low angles. 



Section in Western Vermont. 1 



Names of 

 Formations. 



Thickness 

 in Feet. 



Characteristics. 



<D 







Cut off by a fault above. 



T3 





3500 to 4500 



Arenaceous shales. 



73 !s 





1700 



Massive gray limestone, with intercalated bands 







of hard argillaceous shale. 



§ i 





50 



Light-gray quartzite. 



u «8 

 SO 





3500 



Argillaceous shales; occasional thin layers of 



£ 







hard gray limestone; numerous fragments of 



P 







a linguloid shell. 





Georgian shales . 



200 



Argillaceous, micaceous, and arenaceous shales; 

 numerous Lower Cambrian fossils. 







190 



Gray arenaceous limestone in rough, massive 

 layers, passing into more evenly bedded, 



1 







light -gray arenaceous limestone; fossilifer- 



i 



Red Sandrock 







6 j 



series 



100 



Reddish-pink dolomitic limestone; fossiliferous. 



g 





475 



Massive gray dolomitic limestone. 



£ 



3 





200 



Steel-gray dolomitic limestone with bands of 







mottled limestone; some reddish dolomite. 







35 



Massive bluish gray dolomitic limestone, with 

 threads and bunches of yellowish-drab sandy 





Base unknown. 





limestone that weathers in relief. 



Strata dip at high angles. 

 •Walcott, Bull. 81, U. S. Geol. Surv., pp. 277-280. 



