14 NEW YORK STATE MUSEUM 



the Mohawk and southward to the escarpment of the sandstones 

 rising above Minaville and Glen. Massive drift also extends from 

 Galway and Hagadorns Mills westward by Broadalbin, and beyond 

 Johnstown and Gloversville. South of this belt and north of the 

 Mohawk river is a region of very sparse drift, due perhaps in large 

 part to the Tribes Hill and Hoffman faults, and the consequent 

 exposure of the uplifted areas to glacial abrasion. 



It has been noted in earlier writing's that a Mohawk glacier 

 moved westward or up the valley. Considerable new evidence in 

 this direction has been found. The topography is " linear " and 

 the flutings have a conspicuous east by west trend. This appears 

 on the contoured maps and even more strongly in the field. Within 

 the field of the Mohawk glacier about a dozen new localities of 

 striae were found. These range through the entire field north and 

 south of the river and have an average westward trend. Several 

 run n. 80° w. or 10° north of west. A few show trends south of 

 west. Doubtless the western and southern limits of this lobe will 

 be found outside of the quadrangles named. 



A separate movement is indicated for the Sacandaga valley about 

 Northville and south and southwestward to Broadalbin and 

 Gloversville. East and west of this much reduced area are bold 

 spurs of the Adirondack Precambric, extending southward and 

 forming the boundaries of what we may call the Sacandaga glacier. 

 Here the movement was southward at Northville, becoming south- 

 westward about Mayfield and there apparently confluent with the 

 westward movement of the Mohawk lobe about Gloversville. The 

 striae and drumlinoid hills confirm this conclusion as well as the 

 trend of a considerable number of true drumlins found in the 

 region about Gloversville and Johnstown. 



From a point to the eastward of Hagadorns Mills, a belt of sand 

 hills extends westward and has thus far been traced for a distance 

 of 25 miles to a point at the summit of the Noses fault escarpment, 

 west of Gloversville. Broadalbin is at the south base of this sand 

 belt and the city of Gloversville is mainly built upon it. It is 

 interpreted with reservation, as an interlobate moraine of the Mo- 

 hawk and Sacandaga glacial lobes. Other groups of sand hills 

 appear along the Sacandao:a above Northville, below Edinburg 

 and on the spur inclosed by the Sacandaga north of Northamp- 

 ton. These belong to the recession of the Sacandaga glacier. 

 In some instances the sands are kames and a number of sand plains 

 ^ccur which were accumulated within retaining- walls of ice. Parts 



