SUPERFICIAL GEOLOGY OF DUNDAS VALLEY. 



thickness ; the broken band being only about one-half inch in 

 thickness and in places fretted. 



These bands apparently had their source in an overlying mass 

 of the same material. 



Another section of the same spur gave underneath the brick 

 clay : 



i. Sand, with broken top 4 \ inches. 



2. Clay, 18 inches, thinning out to. 8 or 5 \ inches. 



3. Sand, course 10 inches. 



4. Sand, fine 2 inches. 



5. Conglomerate 2 feet 6 inches. 



The beds beneath the conglomerate are concealed here. 

 The dip of this section is also in a western directions. 



The section of the Heights at the present mouth of the canal 

 gives : 



1. Soil, 



2. Fine Sand, 



3. Gravel, V Horizontal. 



4. Coarse Sand, 



5. Gravel. 



6. Coarse Sand, ' \ 



7. Gravel, 



8. Coarse Sand, 



9. Gravel, 



10. Coarse Sand, 



11. Coarse Gravel, 



12. Sand and fine gravel, 



13. Coarse Gravel, 



14. Coarse Sand, 



15. silt ; 



16. Stratified Sand. 



17. Beds of alternately fine and coarse sand. 



These beds are underlaid by the Erie clay lying upon the Medina 

 formation. In this section the underlying beds are mostly dipping 

 towards the North-East with horizontal beds overlying them. These 

 beds are not as a rule, of uniform thickness throughout, many of 

 them being wedge-shaped, particularly those immediately underlying 

 the horizontal beds. The underlying strata are concealed at the 

 canal and arj rarely visible at any part of the Heights. 



r 



Some beds wedge- 

 shaped across the 

 Heights and all 

 dipping slightly to- 

 wards the old mouth 

 of the canal. 



