THE EIGHTH OR FEKGUS FALLS MOEAINE. 159 



of di'ift hills tlirouj^ii the east edge of Todd County to the magnificent 

 development of this moraine, apparently united again with the ninth or 

 Leaf Hills moraine, about J^ish Trap Lake and Lake Alexander, in north- 

 western Morrison County. Crossing to the east side of the ]\Iississippi, the 

 Fergus Falls moraine passes south along the east side <>f this river's Glacial 

 flood-plain to Hole-in-the-Days Bluff and the massive hills east of Little 

 Falls, where it is ^jrobably combined with a reentrant angle of the Dovre 

 moraine. Thence it jjasses northeastward through the sovttheast part of 

 Crow Wing- Countv, skirting the northwest side of Mille Lacs ; and curv- 

 ing next southeastward around this lake, it appears to be represented by 

 morainic hills observed in the southeast part of Aitkin County and in 

 northwestern Pine County. Northward from Fergus Falls, tltis moraine 

 passes by Lakes Lida and Lizzie to Detroit, the Wliite Earth Agency, and 

 White Earth Lake ; and thence it turns nearly by a right angle west-north 

 west to the Frenchmans Bluff, in township 1-43, range 43, Norman County, 

 west of which it enters the area of Lake Agassiz, close south of the Wild 

 Rice River. ^ 



The course of the ice front whei-e it formed the northern barrier of 

 Lake Agassiz at the time of its accumulation of the eighth or Fergus Falls 

 moraine is marked bv hilly and knolly drift deposits, with plentiful bowl- 

 ders, both east and west of the lake near the latitude of 47° 10', which 

 passes 20 miles north of Fargo; by an unusual abundance of bowlders 

 near this latitude and farther north on portions of the slightly undulating 

 ov nearly level till forming each side of the lacustrine area; and by a tract 

 of till several miles in width, probably representing both the eighth and 

 ninth or Fergus Falls and Leaf Hills moraines combined, which stretches 

 across the Red River Valley at Caledonia, from Ada, Rolette, and Beltrami 

 west to Reynolds, Buxton, Cummings, and Blanchard, constituting the bed 

 and banks of the river along the Goose Rapids. In Lake Agassiz the 

 morainic till Avas spread with a generally even surface, but it has many 

 small inequalities, the highei" portions being- 3 to 5 feet or rarely 10 feet 

 above adjoining hollows. Bowlders and gravel are plentiful on its surface, 



'Geology of Minnesota, Vol. II, pp. 630, 642; 625; 581-585, 605; 563, 564. 571; 475, 477, 478, 488; 

 544-549 [Fergus Falls and the Leaf Hills] ; 647, 652. U. S. Geol. Survey, Bulletin No. 39, p. 33. (The 

 references are in geographic order, from east to west.) 



