MONOGRAPH XXXIII. PL. 



LEGEND 



SEDIMENTARY ROCKS 



GEOLOGICAL MAP OF Till 



BYJ.B.WOOIWORTH.A^ 



n^n^^2* «2. NARRAGANSETT BASIN 



CA 



Diohton. o>oup 



AVanjsuttagniup 



Pondville ai'koses arid 

 quartz conglomerates 



Lower Cambrian 



IGNEOUS ROCKS 



V^ 



Diabase dikes 



Diamond fliU 

 quartz veins 



: 



Pre-Carboniferous 

 ■oris mainly granitite 



Coal shafts 

 and bore-holes 



Faults 

 OUTCROPS 



Strike and dip oi im- 



Sli-ala dip 

 uncertain 



