1 96 GEOLOGY OF THE I^^AEEAGAIsTSETT BASIN. 



they overlie the following section, which is separated from them by several 

 hmidred feet of concealed beds. 



Near the southeastern end of the Norton reservoir are broad exposures 

 of slaty arenaceous strata striking N. 54^ E. and dipping 75^ S. The fol- 

 lowing paced measurements give the succession, from south to north: 



Section in Norton, 



Feet 



1. Slate 3 



2. Saudstone 39 



3. Slate . , 5 



4 Sandstone 2 



5. Slate 12 



6. Sandstone 8 



7. Slate 1 



8. Sandstone 27 



9. Slate. 9 



10. Sandstone 18 



11. Slate 48 



12. Sandstone 22 



13. Slate 2 



14. Sandstone 34 



The prevailing character of this section is similar to that of the beds 

 in the same anticlinal fold to the westward in Attleboro. The absence of 

 carbonaceous matter in the exposed sections is noteworthy. 



A few isolated outcrops in the village of Norton display beds of con- 

 glomerate and grits, with variable dips. At one point the inclination is as 

 low as 50^ N, The general structure of the belt of rocks through Norton 

 is probably anticlinal, for the Mansfield and Bridgewater synclinal trough 

 lies on the north and the Great Meadow Hill syncline is well marked on 

 the south. 



winneconnet ledges. — From 2 to 3 milos northeast of the exposures in 

 Norton occurs the Winneconnet section, on the east bank of Mulberry 

 Meadow Brook, There are here exposed upward of 200 feet of soft slaty 

 rock of an arenaceous and often gritty texture. The cleavage dips west, 

 and its strike is N. 49^ E., but the dip of the bedding is not easily deter- 

 mined. One and a half miles northwest of this locality is another exposure 

 of similar slates. In both places the surface of the rock weathers into 

 pear-shaped and rotnded cavities, recalling the weathering of the ottrelitic 



