324: L. Hatch — Marine Terraces in S.E. Connecticut. 



ite or Westerly red granite, holds terraces at lower as well as 

 the higher elevations. 



The most resistant rock of the region is the Lantern Hill 

 quartz, and one would look for evidences of wave erosion at 

 more than one level where it occurs, if the hypothesis of suc- 

 cessive periods of wave erosion is plausible. Such evidence 

 seems to be present, for the profile of the hill shows the 400- 

 foot level w^ell developed over the middle portion (Long Hill) 



Fig. 4. 



Fig. 4. Lantern Hill as seen from tlie west. The main part of the hill 

 retains the 400-foot terrace, while the higher portion to the north rises to 

 500 feet. 



while there is a perceptible notch at about the 300-foot level on 

 the southern side. At the northern end also a portion of the hill 

 still reaches the 500-foot elevation. This higher knob may be 

 seen in fig. 4, and its position at the northern end of the hill 

 certainly strongly suggests marine (as contrasted with subaerial) 

 erosion for the carving of the 400-foot level above which it 

 rises. 



Possible Errors in Interpreting the Topography. 



Glacial Modification. Continental ice modified the pre- 

 glacial surface somewhat by scraping it and depositing drift in 

 places. But the rock hills were little changed, as they are not 

 Toche moidonnee forms, but still retain their flat tops. Many 

 show the little knobs on the northern ends (see Swanton, 



