QUATERNARY FORMATIONS - THE DRIFT. 



211 



along highways and streams, the stratified condition would unques- 

 tionably be considered the prevailing L-rm of structure, but these are 

 very often deceptive. The flanks of all drift ridges become stratified 

 by wash, winds and gravitation, whether originally so or not, and the 

 excavation of a road or stream is much more apt to expose this por- 

 tion than the real nucleus of the hill. The deeper excavations that 

 have been made, however, demonstrate that to a large extent, at least, 

 the core of the Range is unstratified. 



A few additional features deserve consideration, among which is 

 the comparative abruptness of the opposite slopes of the Range. In 

 treating of this and the following topics, reference will be had chiefly 

 to the eastern and main portion of the Range, since the recurving 

 western branch is not sufficiently conspicuous to render observations 

 of this kind of special value. 



In the town of Randall, Kenosha county, the eastern face is quite 

 abrupt. Between Burlington and Lake Geneva, the more abrupt face is 

 toward the northwest. The same is true in the towns of Richmond, 

 Whitewater, La Grange, Palmyra, Eagle, Ottawa, and Delafield. In 

 Washington county the difference in the abruptness of the two sides 

 is less marked, but the general truth is the same. Likewise in She- 

 boygan county, in general. In the towns of Plymouth and Rhine, the 

 eastern face is well defined, but the fine development of kettles, men- 

 tioned and figured by Col. Whittlesey, occurring near Greenbush, lie 

 upon the northwestern flank, and the western face in the town or 

 Rhine is also sharply limited, and the peculiar features of the Range 

 are more strongly marked on this than upon the opposite side. In 

 Manitowoc and Kewaunee counties both flanks as well as the whole 

 Range are much subdued and neither presents sharp outlines. 



It is a general and, indeed, a pretty well sustained fact that the 

 westward face of the Range is the more abrupt, and that the more 

 conspicuous peculiarities of the formation lie upon that side. Long, 

 sharp ridges, termed hog's backs, occur in Wai worth and Waukesha 

 counties, flanking the main ridge, but have no counterpart upon the 

 east side of the Range. 



FIG. 7. 



Profile across the west branch of the Kettle liauge south of Whitewater, showing the position of 

 the "kettles" on the northern slope. 



