U.S. GEOLOGICAL SURVEY 



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oxboro 



MONOGRAPH XXXIII. PL. XVII 



5.5' 50' 70''45' 



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5' 



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LEGEND 



SEDIMENTARY ROCKS 



42°! 



'^ilvfir 











lb PlA'Tiipf^^rT 



42' 



55' 



SO 



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X/ 





H 





Pond 



it lit 



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50' 



-9-5 



41° 

 45' 



iO' 



70*45" 



JULIUS BIEN a CO, LITH NY. 



^.KOLOGTrAT, AfAP OV THE NORTHERN AND EASTERN PORTIONS OF THE N.\RRAGANSETT BASIN 



VOOT^AVOR' 



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HAROK 



1 o 



mm 



I) job ton ^roup 



Coal measure b 



of red beds 



O 

 DC 

 UJ 

 U. 



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O 



DO 



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Pond OSes and 



quarlz cuugioinerates J 



Lo. 



OQ 



tvxLiwj'ian ^ 



GNEOUS ROCKS 



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Diabase dikes 



Q liar tz-p oTphyvy 

 and f el sites 



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Diamond Hill 

 quartz "veins 



1 



Pl'(3- \.l{ i Ul H I 11 V- I VM L.-> 



rtK'R mainly e^ivinitite 







Coal sbal'ts 

 aMd bore -holes 



Fault s 

 OUTCROPS 



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strike and diY» ot int 

 poilant exix)sures 

 of strain 



-f 

 Vertical strata 



Strata dip 

 uncertain 



Sandstone 



