32 A. Winchell on the Animike in Minnesota. 
Finding characteristic Kewatin slates within half a mile of 
characteristic (but rather steeply dipping) Animike slates, it 
became very important to find their junction, which must occur 
at some intermediate point. Happily, a careful search brought 
the junction to light. At this point is a low projecting bluff of 
slate, in which the usual vertical cleavage is conspicuous at all 
points, and careless observation would pronounce the whole ex- 
posin'e one in character and age. Careful inspection, however, 
K EW A TIN 
A N I M I K I E 
Fig. 3. Junction of Animike and Kewatin. South side of Epsilon lake. 
T 64, R 6 W, Minnesota. 
shows the boss of slate on one side to possess a ribboned charac- 
ter dipping 8.43° , a dark complexion and very smooth cleavage; 
while that on the north is a rough and older looking slate, with 
no graining or ribboning unconformable with the schistosity. 
On the contrary, due research discloses the existence of bedding 
planes conformable with the schistosity, and also giving evidence 
of their sedimentary origin. In short, we have here Animike 
slates on one side resting uncomformably on the Kewatin slates 
of the other side. The precise junction is not exposed, that 
being, as usual, more eroded than the masses on either hand, 
with the depression covered by detritus. 
Similar but less conclusive observations at many other points 
led me to the conclusion that many of the depressions in the old 
eroded surface of the Kewatin, in the region from Gunfiint lake 
to Knife and Sucker lakes, have been filled with Animike sedi- 
ment, and both formations subsequently subjected to the com- 
mon influences which have imparted to both that wonderfully 
persistent and uniform vertical schistosity which is so striking a 
feature. The most eastern discordance known is in sec. 1, T. 
64, R. 3 E. 
