544 F. BASCOM 
Nature is less obvious and more complex in her methods and 
evidences than such expectations would imply, but a detailed and 
careful study of approximately level tracts and benches seems to 
justify the following series of peneplains and terraces related to 
the major unconformities of the stratigraphic record. 
Altitude 
Name West ia Sediments Age Preserved 
Peneplains 
Kittatinny..... 1800-1600-1100|] Patuxent. Jurassic and Quartzite 
Lower Creta- 
ceous 
Schooley...... 1300-1000-900 | Patapsco- Lower Creta- | Granite 
Arundel. ceous 
Honeybrook...| 860-800-700 | Raritan- Upper Creta- | Granite 
Manasquan. ceous 
Harrisburg.... 800-500 Aquia- Tertiary Shale 
St. Mary’s. 
Early Early Pliocene Shale, etc. 
Brandywine....| 500-400-390 | Brandywine. (Pleistocene) 
Terraces 
Late 400-300-200 | Late Pleistocene Mica gneisses 
Brandywine... Brandywine. 
Sunderland. ...| 300-180-100 | Sunderland. Pleistocene Mica gneisses 
Wicomico..... 90-45 Wicomico. Pleistocene Mica gneisses 
WADE. sooo oo 45-40-09 Talbot. Pleistocene Mica gneisses 
The oldest peneplain, the highest inland from the sea and the 
lowest near the sea where it is preserved under sedimentary rocks, . 
is the Kittatinny. This peneplain surface is so strikingly upheld, 
Kittatinny 
2000° : 
eco Peneplain 
1500° 
1000' 
500° 
, Sea-level 
Fic. 1.—Section across Godfrey Ridge and Kittatinny Range, at the Delaware — 
Water Gap, Delaware Water Gap quadrangle, Pennsylvania—New Jersey. 
i | 
Honeybrook Schooley Schooley |, ,,eybrook Harrisburg 
Delaware Watergap quadrangle 
although not preserved unmodified, by the indurated sandstone of 
Kittatinny Mountain (1,600 feet), its type locality (see Fig. 1), and 
in other resistant ridges of the Appalachian highlands that it was 
early recognized and an effort was made to fit it to the lower 
summits of Schooley Mountain and still lower surfaces in the 
