PLEISTOCENE GEOLOGY OF MOOERS QUADRANGLE 11 



scanty observations in the low ground, was in that part of Mooers 

 township between s. w. and s. w. by s. 



Frontal and recessional moraines 

 There are a number of patches of thickened till within the area 

 covered by this map, which have been deposited at or near the ice 

 front in the last stages of the retreat from the State. The accom- 

 panying sketch map [pi. 2] shows by heavy black lines the sup- 

 posed position of the ice front when these deposits were made. 

 The clearest examples occur in the depression between Rand hill 

 and Jericho. The road from Jericho to Sandburn brook skirts 

 the eastern base of a morainal terrace. The southern slope of the 

 1400 foot hill, from 1J to 2 miles east of Jericho, is characterized 

 by strong morainal ridges apparently deposited on the margins of 

 local tongues of ice sweeping about the eastern and western slopes 

 of this hill. There are other local patches of hummocky till along 

 Smith Wood brook. The detailed mapping of such deposits in the 

 thick woods in the southwestern corner of the sheet appeared im- 

 practicable, and there are probably lines of ice front yet to be 

 traced in the area. A very distinct series of frontal deposits ap- 

 pears to the southeast and southwest from Big hill in Altona. 

 The same deposits probably extend through the vicinity of Alder 

 Bend toward Ellenburg. This line probably is to be associated 

 with the heavy drift deposits about the southeastern base of Rand 

 hill between 700 and 900 feet in elevation, where a few kettle holes 

 and a decidedly marginal moraine topography are well developed. 

 Frontal moraine ridges [see pi. 3] occur at an elevation of 

 about 600 feet, north of Altona and along the road between that 

 village and Sciota, on the eastern and northeastern border of the 

 Flat rock area. Strong morainal ridges, apparently lateral 

 moraines, appear at the southern end of Pine ridge between the 

 600 foot and 700 foot contour lines and in an en echelon arrange- 

 ment continue along the eastern base of the high ground from 

 Altona into Beekmantown, sometimes much modified by wave 

 action on their eastern slopes. The most conspicuous example 

 of a wave-washed moraine or boulder belt occurs in the ridge just 

 north of the Little Chazy river, where, according to the map, it 

 traverses the 600 foot contour line. This moraine, northward to 



