SOUTHERNMOST KANSAS TILES 
381 
Todd “Only scattered boulders can now be found, where till 
patches may have once been a few feet in thickness.” ® 
In view of the fact that the till in Kansas is in general thin and 
patchy, the topography flat, and the exposures few, it is not un¬ 
reasonable to believe that careful and detailed search may favor 
the hypothesis that the Kansan ice-sheet extended farther south 
than the Kansas Valley. 
The outcrops of till do not necessarily imply that the entire 
glacier invaded the region south of the Kansas River valley, but 
that there was a lobate extension of the Kansan ice-sheet south of 
Linwood and Lenape. The deposits can readily be accounted 
for by the deposition of a glacier lobe which pushed its way far¬ 
ther to the south than did the main mass of ice. As indicated by 
Todd “There is some evidence that the ice-sheet in Kansas was 
more or less lobular in form, or at least after it passed over the 
divide into the Kansas Valley. One lobe passed down * * * * 
the Big Stranger Creek to Linwood and Lenape.” ® It is apparent 
from the map (figure 13), that the exposures of the glacial mater¬ 
ials are in almost direct north and south alignment with Big 
Stranger Creek and the town of Linwood. May it not be that 
the lobe referred to above extended farther to the south than 
suggested by Todd. The position of the outcrops in relation to 
Big Stranger Creek and Linwood certainly is very suggestive. 
Before finally accepting the view set forth, more detailed search 
would be necessary, as the apparent alignment of the outcrops 
with the Linwood-Lenape lobe may be due to accidental discovery 
of the exposures rather than to actual conditions. Further search 
may reveal other till-like deposits south of Kansas River. 
Concerning debris-laden ice-bergs and outwash, the finding of 
erratics still farther south than the described till-like exposures 
and the recording by Mudge of erratic pebbles as far south as 38® 
north latitude may be due to glacio-fluvial action as intimated 
by Chamberlin and Salisbury, or marginal lake conditions. Todd 
has located, mapped and described several marginal glacial lakes 
and several drift-filled channels, one of which is southeast of 
Lawrence.^^ 
8 Loc. cit., p. 35 
9 Loc. cit., p. 44. 
10 Fourth Kept. Kansas State Board of Agriculture, p. 109, 1875. 
11 Sixth Ann. Rept., U. S. Geol. Surv., p. 314, 1885. 
12 Trans. Kansas Acad. Sci., Vol. XXVIII, p. 41, 1917. 
