LOBECK, NEW YORK CITY, A PHYSIOGRAPHIC CENTER 



25 



warping or faulting of the 

 beds, the stream development 

 of this area, the question of 

 streams superposed from an 

 extensive coastal plain and 

 the Passaic Lake Basin. The 

 terminal moraine is visited 

 near by and note is made 

 of the outwash plain upon 

 which Plainfield stands. 



Hackettstown. — Another 

 day's trip takes the student 

 to Hackettstown (Figs. 15, 

 29). From the car window 

 he observes many of the fea- 

 tures already seen — the trap 

 ridges, the terminal moraine, 

 and the Passaic Lake Basin ; 

 in the field he stands upon 

 the Schooley peneplane at 

 Schooley Mountain, he notes 

 the Tertiary base level and 

 post-Tertiary trenching in 

 Musconetcong Valley (Fig. 

 16), he understands the ori- 

 gin of the valley structurally, 

 be visits the terminal mo- 

 raine, and sees evidence of 

 earlier drift farther down 

 the valley. Topographic 

 maps, the New Jersey geo- 

 logical map and one or two 

 State reports should be con- 

 sulted as well as the essays 

 already referred to. 



Long Island. — A third 

 day's trip takes one out to 

 the Hempstead Bay region 

 of Long Island where gla- 

 ciation is the main topic. 

 Two terminal moraines, out- 

 wash plains, erratics, and 







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