20 NEW YORK STATE MUSEUM 



Kame terraces. Along the base of the western Adirondack 

 spur massive accumulations of sand and gravel, intermixed with 

 some cobbles and boulders, occur. They are conspicuous features 

 of the landscape when viewed from the opposite (eastern) slope 

 of the central basin, appearing as elongated and approximately 

 flat- topped hills against the background of the mountain slope. 

 The most extensive development of this formation occurs west of 

 South Corinth and extends northward to the edge of the sheet, 

 forming a continuous mass 6 miles in length and varying in width 

 from half a mile to nearly 2 miles. This body of materials does 

 not possess, however, a uniform elevation and represents rather 

 an elongated and irregular bank rather than a definite and con- 

 tinuous terrace. The elevation is greatest in that portion which 

 lies west of South Corinth where, a short distance back from the 

 mountain slope and separated from it by a gulley, the summits of 

 the broken surface are at the 900 foot level. Farther to the north 

 the elevation of the mass of gravels is less and that portion crossed 

 by the Adirondack railway west of Corinth stands at 700 feet. 

 Here, west of the railway, there is an approach to uniformity of 

 elevation which gives to this portion of the formation a topography 

 approximating that of a terrace. 



Another extensive accumulation of sand and gravel in like relation 

 to the mountain slope occurs southeast of Porter Corners. In this 

 case the mass is developed eastward to the valley plain along Kay- 

 aderosseras creek, the surface sloping, though in an irregular way, 

 from the mountain base to the border of the creek. Farther to the 

 southeast a series of sand and gravel hills, separated by stream 

 courses, follows the mountain base and, in similar relations, a larger 

 area extends farther southeastward, terminating near the village of 

 East Galway. 



Considered as to the details of surface topography, these forma- 

 tions present characteristic features. Well-defined kames occur, 

 especially in the Corinth areas. They are hills, composed of sand 

 and gravel, of varied sizes and shapes but in general of moumdlike 

 aspect. In regard to arrangement of materials they partake of the 

 stratification common to the mass of which they form a part. Ex- 

 cellent exposures are shown along the recently constructed macad- 

 amized road running northward from South Corinth. Also in 

 numerous gullies there are exposures showing the layered arrange- 

 ment of the materials. 



The depressions between the kames are often kettle holes and in 



