47 



seems to be thrown southward, and this time it crosses the 

 track in a small cutting, and disappears. 



This cutting is one of the best localities for graptolites 

 in this vicinity, and the position of this graptolite bed in 

 the section is therefore of considerable interest. Up the 

 hill from the graptolite bed is a conglomerate band about 

 ioo feet (30 m.) above it. Fortunately this band can be 

 traced with considerable certainty to connect with the lower 

 of the two bands in the bluff section (conglomerate A., see 

 Levis guide above). It is of course a question whether the 

 graptolite layers stratigraphically belong 100 feet (30 m.) 

 below this conglomerate A, or 20 feet (6 m.) below the 

 rusty one. It seems that the former is the case, because, 

 firstly, there is a zone of badly crushed and slickensided 

 shale between the lower, rusty conglomerate and the 

 graptolite shale, and secondly, the fauna is like that found 

 in the shales of the bluff, Dichograptus octobrachiatus and 

 Phyllograptiis anna being the more characteristic species. 



Beyond this cutting, a path leads up through the bushes 

 to the top of the bluff. Near the top of the bluff is a lime- 

 stone conglomerate similar to one exposed on the street 

 above St. Joseph road. The conglomerate contains thin- 

 bedded layers of limestone. It is here very thick, but 

 this thickening is due to a doubling on itself in a synclinal 

 fold. Following this path southward, to the highway and 

 thence to and along St. Joseph road to Begin street and 

 up this street, no strata are exposed until a lane is reached 

 leading to the quarries on the hillside, Just at the entrance 

 to the lane a band of limestone conglomerate is exposed, 

 another occurs a short distance further, and a third makes 

 a prominent ridge just north of the quarries which are 

 themselves in a conglomerate. 



In the two quarries opened in this highest ridge there 

 are very large masses of limestone, one of them 35 feet 

 (10 -6 m.) in diameter. It is hardly possible to consider 

 them boulders, and, moreover, both these larger masses 

 and the brown weathering paste contain fossils of Beek- 

 mantown age. Other pebbles in the same quarry contain 

 Upper Cambrian fossils, and there are some large pebbles 

 of sandstone, notably one just at the left of the eastern 

 quarry. The ridge is therefore a conglomerate, but a 

 large part of the material seems to have come from a 

 limestone layer disrupted in situ. The first ridge north 

 of this contains the same sort of large limestone masses 



