H3 



Miles and 

 Kilometres. 



88-3 m. Guelph— Alt. 1,067 ft. (88-3 m.). The 



142-1 km. uppermost layers of the Niagara may be seen 



near Guelph, while the characteristic dolomites 



of the Guelph formation are exposed at several 



points between Guelph and Gait. 



At Kennedy's quarry and limekiln (A) near 

 Guelph, about 30 feet (9-1 m.) of typical 

 Guelph dolomite is exposed in fairly heavy 

 beds. Stromatoporoids and fragmentary corals 

 are the common fossils, but the locality is not 

 a good one for collecting. On the other hand, 

 it presents an interesting dome-like structure 

 in the strata. 



At MacFarlane's tavern (B) 14 feet (4 -2m.) 

 of thin bedded bituminous limestone of the upper 

 Niagara is exposed. The rock is hard and 

 black, with galena, zinc blende and bitumen in 

 vugs. The fossils consist chiefly of casts, which 

 are difficult to identify. In the lower beds a 

 small form resembling Whitfieldella nitida Hall 

 is common. Five feet (1 -5 m.) from the bottom 

 is a six-inch zone containing numerous gastr- 

 opods related to Trochonema pauper Hall, and 

 Straparollus hippolyta Billings. Higher up are 

 found Favosites niagarensis Hall, and a branch- 

 ing coral resembling Cladopora multipora Hall. 

 On the same side of the road, farther east and 

 at a slightly higher level, undoubted Guelph 

 strata are seen, with Halysiles catenulatus 

 Linn, and Pycnostylus guelphensis Whiteaves. 



Good exposures are presented in the scarped 

 bank of the Eromosa river on the Prison farm 

 (C, D, E). The section is interesting rather 

 from a stratigraphic than from a palaeontological 

 viewpoint. In the building-stone quarry the 

 following beds may be recognized in descending 

 order : — 



Thickness. 

 Feet. Metres. 



Guelph — 



Thin-bedded dolomites 6 1 -8 



Thick-bedded, compact dolomites 



suitable for building stone 7 2- 1 



Thin-bedded dolomites 6 1 -8 



35065—8 



