378 
SOUTHERNMOST KANSAS TILLS 
SOUTHERNMOST EXTENSION OF KANSAS TILLS" 
By Prof. Walter H. Schoewe 
Kansas State University 
The line marking the position of the maximum advance of the 
Kansan ice-sheet in northeastern Kansas has been established by 
investigators at various places, lying either north or south of the 
Kansas, or Kaw, River. The early maps of Hay,^ and Cham¬ 
berlin and Salisbury ^ show the drift border as being south of 
the river and extending as least as far south as 38° 50' north lati¬ 
tude. 
Of the more recent work, that done by J. E. Todd ^ not only 
represents the latest but also the most thorough. This investi¬ 
gator locates the edge of the Kansan ice-sheet as lying north 
of the Kansas River valley from a point midway between Le- 
compton and Lawrence to Kansas City. This line separating the 
glaciated from the unglaciated area in Kansas is essentially the 
one adopted by the Kansas Geological Survey and published by 
R. L. Moore on its more recent map.® 
The existence of erratics and exposures of what appeared to 
be till was first called to the writer’s notice some time ago when 
passing hurriedly through eastern Douglas County in a car. The 
presence of the familiar red quartzites so numerous around Law¬ 
rence aroused no special surprise as these are indicated in the 
literature of the region. Not so, however, with the till-like expo¬ 
sures, especially since no typical till was known to exist nearer 
Lawrence than ten miles north. The nearest outcrop to the 
1 Paper read before the Iowa Academy of Sciences at the Des Moines Meeting, 1922. 
2 Eighth Bien. Rept. Kansas State Board of Agriculture, 1892. 
3 Preliminary paper on Driftless Area to Upper Mississippi Valley, U. S. Geol. Surv., 
6th Ann. Rept., 1885. 
4 Trans. Kansas Acad. Sci., Vol. XXVIII, pp. 33-47, 1917. 
5 Outline Map showing Distribution of the Quarternary Deposits of Kansas: Kan¬ 
sas Geol. Surv., Bull. 6, p. 82, 1860. 
