Cape May. Formation — Local Details. 181 



ill defined, and they are composed of gravel and sand, especially 

 at their streamward edges, and they are more or less generally 

 covered with loam:. Wind-blown sand has modified the surface 

 slightly. Where surface loam is present, it is like that at Kin- 

 kora and Fieldsborough. The terraces along) the lower course of 

 the stream are only 30 to 40 feet above tide, but the correspond- 

 ing deposits rise to 60 feet or more up the valley. 



The broad flats above Jacksonville appear to be covered with 

 deposits of Cape May age, but the material is not well defined or 

 well exposed. 



Northwest and southwest of Jobstown are two ridges rising 

 to 80—85 feet, covered by glauconitic sand which is locally as 

 much as 20 feet thick, though this is perhaps twice its average 

 thickness. It is like the eolian (probably) glauconitic sand along 

 the streams. There is a bit of igravel beneath the loam, doubt- 

 fully of Pensauken age. This glauconitic sand goes with that 

 at various points in the region, ranging in elevation from 200 

 feet down. 



Delaware Valley; Burlington to Pensauken Creek. — Between 

 Burlington and Rancocas Creek, the lowland bordering the 

 Delaware is an undulating plain 2 to 4 miles wide, covered with 

 sand and sandy loam, much of which is wind blown. Locally 

 a distinct though feeble dune topography is developed, as 2 

 to 3 miles south and southwest of Burlington. Beneath the 

 surface sand, the materials are various, but gravel is common, 

 containing some pebbles brought down the Delaware. The 

 plain continues southward, with the same general character- 

 istics, to Cambridge (below Riverside). Below Cambridge it 

 narrows, but widens again at Riverton and Palmyra. A little 

 southeast of Edgewater Park, a section is as follows : 



4) 2 to 6 feet of sand, medium fine, yellow to brown, eolian. 



3) 6 feet of black clay, horizontally bedded, but with laminae bent 



and distorted. 

 2) 10 feet of sand, the upper part very like number 4) above, the 



lower part containing some glacial Sand. 

 1) Sand, with gravel — cobbles and bowlders. The stony material 



consists of quartz, sandstone, quartzite, and greywacke. 



