36 Quaternary Formations of Southern New Jersey. 



land along the Delaware. Six miles to the northwest of this 

 escarpment, near Haddonfield, is an isolated hill (Fig. 23), the 

 top of which has an elevation of 140 feet. This hill has a thin 

 cap of gravel which is correlated with Bridgeton on topographic 

 grounds, good exposures of the material not being seen. This is 

 the only remnant of the formation between Gibbsborough and 

 the Delaware. 



The upper limit of the Pensauken formation about Haddon- 

 field is about 120 feet. The isolated hill at 140, with its cap of 

 gravel, is somewhat conspicuous. The gravel of this hill is not 

 distinguishable, lithologically, from the Pensauken, but topo- 

 graphically the hill clearly belongs with Irish Hill 3 miles to the 

 southwest, and with Adams and Big Mannington hills still farther 

 southwest. 



Houghton's Hill. 1 — Two miles southwest of Marlton and 4 

 miles southeast of Haddonfield, is Houghton's Hill, which has a 

 summit elevation of 181 feet. The gravel pit at its top shows 

 30 feet of Bridgeton gravel and sand (Fig. 24). The assortment 

 of the material here is less perfect than in most sections of the 

 Bridgeton formation. The larger part of the coarse material is 

 at the base, where shale in pieces up* to 2 inches in diameter is 

 conspicuous. In the main part of the section, there is little loamy 

 material, and the sand is less compact than is the habit of the 

 formation. It consists of coarse sand and fine gravel, and makes 

 fairly good road material, more because of the abundance of 

 soft cherts, than for any other reason. The relations of this 

 remnant are indicated in Fig. 24 (p. 40). 



Albion. — North of Berlin the 214-foot hill has no Bridgeton 

 at its summit. The hills of this elevation appear to have risen 

 above the level of Bridgeton deposition, but they may not now 

 have the altitude which they had during the Bridgeton epoch. 

 About Albion, Bridgeton occurs at lower levels, perhaps as low 

 as 150 feet; but south of Clementon the 202-foot hill seems to 

 be free from Bridgeton material. The trace of gravel over it 

 ma}' have been derived from the Beacon Hill formation so far 

 as present evidence shows. 



^n recent map of the Survey this is "Hutton's Hill." 



