SYSTEMS OF GLACIAL GRAVELS. J 65 



SOUTH ALBION-CHINA SYSTEM. 



About 2 miles east of South Albion (Puddledock), at the northern 

 base of the high hills which border the Sebasticook Plain on the south, is 

 a plain one-fourth mile long and more than half as Avide. It contains 

 many well-rounded bowlderets and bowlders. 2 to 3 feet in diameter. On 

 all sides it ends in a bluff 20 to 30 feet high. To the north is the gently 

 rolling plain of the Sebasticook Valley, covered for many miles with 

 marine clays. I could find no similar deposits to the north or east of this 

 plain. A series of similar broad level-topped plains, separated by short 

 intervals, extends southwest of this point along the northern base of the 

 hills, at a height of 50 to 75 feet above the clay plain. Some of these 

 plains are bordered on both sides by steep banks; others were deposited 

 against the side of the hill as terraces. These plains present a curious 

 alternation of areas of coarse gravel, containing bowlderets and bowlders, 

 with areas of sand, as if these were a series of deltas deposited in broad 

 channels in the ice which were practically glacial lakes. The terraces 

 become narrow near South Albion. From this point for several miles they 

 are in a harrow valley in which a branch of Fifteenmile River flows north- 

 east to South Albion. Usually the gravel takes the form of terraces on 

 the east side of this valley, while one-fourth of a mile distant on the oppo- 

 site side of the valley, or often less than half that distance, are a large 

 number of morainal heaps and ridges. In several places the appearances 

 are as if a glacial stream flowed through the valley while the ice was still 

 thick. Then later a narrow and thinner tongue of ice, practically a local 

 glacier, lingered for a time in the valley, and at this time the glacial river 

 assorted the moraine stuff that was cast down on the east side of the valley, 

 while on the west side the lateral moraine retained its pellmell structure. 

 These heaps of till may be in part the termdnal moraines of the hypotheti- 

 cal local glacier formed during its retreat northward. If these peculiar 

 masses of till are not due to a local movement, as suggested, they are a 

 strange freak of the general movement. 



In the southwestern part of Albion the system crosses a very low divide 

 and contiimes straight on through China to the northeastern base of Par- 

 menter Hill. It here turns abruptly westward and skirts the north and 

 west bases of this high hill, taking the form of a narrow plexus of two or 



