RELATION OF WISCONSIN AND lOWAN DRIFT 



material marked I in fignre 170 is lowan. Another section along 

 this same stream a quarter of a mile to the west of the section 

 shown in figure 170 affords the following: 



SECTION ALONG LIME CREEK, FERTILE TOWNSHIP, 

 WORTH COUNTY. 



Wisconsin drift composed of sand and gravel in the upper por- 

 tion while the lower thirty feet is a bluish gray clay filled 



with bowlders and limestone pebbles 



Black, compact, fine-grained jointed clay, containing quartz 

 pebbles; the upper part is highly fossiliferous and contains 

 pieces of wood. 



50 



y 



X 



.^^ 





'^^"^^ ^.¥^ 





-^•x. ^t '. 



-*"-/ 



Fig. 172 



The upper portion of horizon (2), figure 171, is undoubtedly 

 Yarmouth interglacial deposits. It has about the same eleva- 

 tion with reference to the stream as horizon A in figure 170 

 Here, as in the previous section, Wisconsin drift rests upon 

 Yarmouth deposits. A few rods to the west of the section shown 

 m figure 171, is a very narrow, steep-sided gully. The depth 

 at its lower end just where it enters the river is about thirty 

 feet. This gully is of such recent origin that little weathering 

 of the drift has taken place, and since it is deep enough to cut 

 through the Wisconsin drift into the underlying drift, it affords 

 an interesting study. 



