Lorraine and Richmond Formations at 

 Streetsville. 



Miles and 

 Kilometres. 



In the valley ol the Credit 

 20.8 m. Streetsville river at Streetsville, Lorraine 

 33 . 3 km. Alt. 500 ft. shales are overlain by fossil- 

 152 m. iferous strata of the Rich- 

 mond formation. To the 

 west of Streetsville this marine type of Rich- 

 mond, in its turn, is covered by the red unfos- 

 siliferous shales of the Queenston member of 



Niagara cuesta at the Forks of the Credit. 



the Richmond. While this member is entirely 

 without organic remains in the southern part 

 of the province, it reveals a distinct Richmond 

 fauna at points farther north. Beyond 

 Streetsville the ascent is gradual but continu- 

 ous. Little of interest is to be observed until 



