PALEOZOIC ROCKS OF THE CANTON QUADRANGLE 35 



Solid layer of calcilutite with conchoidal tough frac- Ft. In. 



ture; white chert near base o 11 



(Greenish shale film) 



Compact lutite ; weathers gaily ribboned O 4 



(Greenish shale film) 

 Banded lutite and fine calcarenite; weathers strongly 



banded, bister and clove brown o 6 



(Greenish shale film) 

 Banded as above, with much -medium to coarse quartz 

 sand grains in both parts, the grains sparkling on 



weathered surface o 6 



(Greenish shale film) 



Total Hewittville 8 8i 



C Very fine tough calcarenite with 30 to 50 per cent 

 of medium quartz sand; upper surface with fiat 



pebbles of very fine buffy calcarenite i 2 



B Similar but not so tough; weathers "pocked" i 8 



A Like last; base of cliff, in water o 8 



X In midstream; medium grained, calcareous sandstone; 



weathers pitted i o 



4 6 



Total section exposed 17 yh 



Beds C and below are referred to the summit of the normal 

 Bucks Bridge terrane. They are light, neutral gray, rather lustrous 

 calcarenites or calcareous sandstones, weathering brown. 



Elsewhere than at Hewittville these 8 or 9 feet of yellow-weather- 

 ing waterlimes fail to appear, either because concealed beneath 

 ledges of the Ogdensburg or because discontinuous through erosion 

 or through lateral change. Abundant fragments occur in the glacial 

 drift at Bucks Bridge and some other points, but the sources of 

 such strays are unknown. 



It is questionable whether these strata do or do not belong in 

 the Bucks Bridge formation, but since no break is evident at the 

 supposed contact it has not seemed wise to separate them until 

 they can be traced farther east. 



Summary. Combining the measurements or estimates for the 

 different divisions, we obtain the following sums : 



Minimum estimate Maximum estimate 



Calcilutites at Hewittville 8 feet 9 feet 



Upper fucoidal layers 25 feet or more 27 feet (perhaps more) 



Middle dolomites 10 " " " 15 " 



Basal quartzose beds 8 " " " 25 



Total 51 feet or more 76 feet 



