Geology of Seneca County. 75 



neighboring embankments ; a space which at first and for a 

 moment suggests the notion that one has to do with a valley, the 

 embankments being its walls. 



In other places the gravel is accumulated in terraces like 

 cushions to the right and left of the ravine, having steep slopes 

 crowned with little plains. In the section of the- main ravine at 

 Lodi falls this is seen to occur several times, while the upper 

 deposits are more irregular and run together. (Fig. 16 ) 



LcjcLl 



Figure 16.— Levels of raised delta terraces on north side of Lodi glen. (The elevation of Lodi Is 

 785.1' A. T., or 344^ above lake.) 



The photographs (figs. 19, 20), taken at Willard a few years ago^ 

 represent sections of terrace-masses of this description. Those 

 here given are on the lake front, and rise to the height of 50 feet 

 above the water. The main bulk is made up of gravel and sand, 

 with two or three thin strata of clay. The excavation, made 

 for obtaining sand, was then recent. 



A very large section of one of these delta-terraces has been 

 recently made along the main line of the Lehigh Yalley railway, 

 at North Hector. The station at that point is 872 . 7 feet above 

 mean high tide = 432 feet above Seneca lake. The deposit, 



