SUPERFICIAL GEOLOGY OF DUNDAS VALLEY. 115 



found at the junction of the two beds, and particularly where the 

 blue bed is cut into stream-like hollows or gulches. In the upper 

 bed, on the sides of these depressions, I have found fragments of rock, 

 rounded and water worn, and containing fossils of the Hudson River 

 period. 



Mr. Weir's quarry, on the first lot of the first Range of Flam- 

 boro' West, is overlaid by ten feet of the light colored clay, contain" 

 ing angular blocks. The blue clay is absent, but in one place, a small 

 patch of red till appears, lying close to the rock. The top stratum 

 i§ of a hard, light-colored limestone. This bed looks extremely like 

 as if there had been part of it cut away before the ice action set in. 

 It has only been quarried in places ; and the parts untouched, where 

 exposed, present an edge smoothed and rounded off, and showing 

 the glacial grooves in a beautiful condition and running in a perfect 

 parallelism with this part of the escarpment. In the quarry I found 

 no shells, but a few specimens of the coral favosites gothlandica, and 

 several crystals of galena, from an inch to two inches in diameter. 



The band of broken material capping the Hamilton escarpment, 

 is wanting in Mr. Weir's quarry. The precipice at West Flamboro,' 

 according to the Geological Survey, is capped by blue and grey 

 limestone, including bands of white buff and grey chert, and thickly 

 studded with chert nodules, to a thickness of twenty feet.* 



Last year an attempt was made to bore an Artesian well at Dun- 

 das, and through the kindness of Mr. Bertram, I am enabled to 

 present here, a section of this boring. The mouth of the well is in 

 the talus of the mountain, and one hundred and fifty feet above lake 

 level. 



Section of Dundas Artesian well : 



1 Broken Stone , 25 feet 



2 Clay 48 " 



3 Clay and Fine Sand 5 " 



4 Medina Group (Red Shale) 341 " 



5 Lorrain Shales (Blue Shale) 550 " 



6 UticaBlackShales (Shaleandblackslatevery friable) 330 " 



7 Trenton Limestone to bottom of well 430 " 



Total i,7 2 9 ^et 



* Geology of Canada, page 327 



