I 5° Quaternary Formations of Southern New Jersey. 



channels, not unlike those on the slopes of the hills to the south. 

 After the gravels were deposited, drainage abandoned its old 

 channels, and took new ones more easily eroded. 



A little farther south there are small isolated hills at 140 feet 

 and higher, capped with gravel which may well be regarded as 

 Pensauken, and correlated with the gravel caps about Morgan- 

 ville, Morristown, Hightstown, etc. 



Other minor patches of gravel between Matawan and Atlantic 

 Highlands and below the level which seems appropriate for the 

 Pensauken, need not be separately mentioned. There is one con- 

 siderable area of such gravel between Hazlet and Matawan. It 

 has an altitude of 140 feet at the south, and declines to 60 feet 

 in a mile and a half. The material is similar to that farther west. 

 South of Hazlet is another patch of similar material, with a good 

 exposure a mile south of the station. It runs up to 170 feet at 

 the south. Here again, the gravel fills an old valley. The gravel 

 has a maximum depth of about 20 feet. The material is like that 

 south of Matawan, except that there is more coarse gravel here, 

 and fewer ironstone slabs. The constitution of the material 

 points to the hills to the south as its source. The section is 

 as follows: 



3) 2 feet clay loam, generally with U-shaped pockets running down 

 into 2), 2 feet more. 



2) 6 feet coarse gravel, with matrix enough to mjake it compact. 

 About 5 per cent, of the sand is glauconite. Ironstone frag- 

 ments make up more than half the gravel. They are but little 

 worn and some of them are slabs a foot or more across. 



1) 4 to 6 feet of gravel and sand, less coarse, less compact than 

 2), with more quartz. 



Southeast of Hazlet there is another patch of similar gravel, 

 well exposed in pits. Quartz and ironstone are in the propor- 

 tions of about 1 : 4. There are cobbles of quartz, and pieces of 

 ironstone several inches across. This patch, like the one to the 

 west, seems to be the site of an old shallow valley. In this case, 

 a later valley cuts diagonally across the course of the stream 

 which deposited the gravel. 



West of Waycake Creek, a mile and a half south of east of 

 Hazlet, there is a patch of gravel 10 to 12 feet thick at an altitude 



