SYSTEMS OF GLACIAL GEAVELS. 171 



LOWER KENNEBEC VALLEY SYSTEM. 



The northern connections of this system are not explored, and they 

 may extend into Harmony and Welhngton, and perhaps farther. A gravel 

 plain about one-half mile in diameter is found in the southwestern part 

 of Harmony and southeastern part of Athens. Thence a discontinuous 

 series of low bars and terraces extends several miles southwestward along 

 a low pass. In places the appeai-ance is as if an osar-plain had been 

 eroded so as to leave fragments of its former self here and there, but in 

 general the gravel seems to have been originally deposited discontin- 

 uously. In the southeastern part of Cornville the gravel takes the form 

 of a ridge, which extends nearly continuously through Canaan Village and 

 thence southwestward through Clinton. It crosses the Kennebec River 

 a short distance north of Somerset Mills and, as a continuous osar, follows 

 the west side of the river through Fairfield Village and "VVaterville, below 

 which place it becomes regularly discontinuous. Near Riverside, in Vas- 

 salboro, the series again crosses the Kennebec, and is found on the east 

 side of the river through most of Augusta. In Hallowell and Gardiner 

 the ridges are again found on the west side of the river. At South 

 Gardiner the system crosses to the east side again, and continues on that 

 side through Pittston and Dresden, expanding into a broad plain-like 

 ridge or terrace opposite Richmond Village. This plain is a delta of some 

 sort, but under what conditions it was laid down I have not determined. 

 South of this point the gravels are increasingly discontinuous. Glacial 

 gravel appears at three places on the east side of Swan Island (Perkins 

 Plantation); also at Abagadassett Point, in Bowdoinham, at the head of 

 Merrymeeting Bay, the broad body of fresh water or lake into which the 

 Kennebec and Androscoggin rivers flow. 



At South Gardiner and near Iceboro the gravels of this system form 

 small islands in the Kennebec River. The largest plain in the whole system 

 is the one near Moose Pond, in the southwest part of Harmony, at the north 

 end of the system as here described. At this point a glacial stream flowed 

 into either a glacial lake or the sea. It is not easy to determine the height 

 of the sea in the vicinity of Moose Pond. Clays plainly marine extend 

 up the Sebasticook Valley to Palmyra, where marine fossils are found. 



