CYCLES OF EROSION IN PENNSYLVANIA 549 
beneath, the Patapsco formation, which rests upon eroded Patuxent, 
at an altitude of roo feet, rising to 130 feet in Maryland. The 
next movement of uplift not only raised the Schooley peneplain 
Fic. 7.—Schooley, Honeybrook, and Late Brandywine peneplains in the Boyer- 
town quadrangle. High hills in the background are remnants of the Schooley pene- 
plain, altitude 1,000 feet; hil! in center in middle distance is at the level (660 feet) of 
the Honeybrook peneplain; and the foreground is on the Late Brandywine peneplain, 
altitude 420 feet. Looking west from Palm Station. 
Fic. 8.—Schooley and Honeybrook peneplains in the Boyertown quadrangles. 
Hills in the background are remnants of the Schooley peneplain, altitude 1,000 feet; 
foreground on the Honeybrook peneplain, altitude 800 feet. Devil’s Hump, looking 
south 30° west. 
and remnants of the Kittatinny peneplain to a considerable height, 
but warped them.* 
The next younger peneplain, the Honeybrook, appears in God- 
frey Ridge, northwest of Kittatinny Mountain, at the Delaware 
1 Bailey Willis, op. cit., pp. 189-90. C. W. Hayes, op. cit., p. 330. 
