14 -A. Winchell on the Anhnike in Minnesota. 
tie or no value in determining rock horizons; and it becomes 
almost a matter of surprise to him that this identity has not be- 
fore been shown by those familiar with the original Huronian. 
The parallelisms which I consider established, or highly prob- 
able, can be tabulated as follows: 
Minnesota. Wisconsin. Original Huronian, 
' Sioux Quartzyte and Carraboo Quartzyte. Otter Tail Quartzyte. 
Catlinite beds. 
New Ulm Barron Co. Quartzyte. Thessalon Quartzyte. 
Quartzyte. 
Wauswaugoninjj (Felsytes of central (The upper quartzytes 
bay Quartzytes. Wisconsin.') of the region.) 
j'Animike slates and Rocks of the Gogebic 
2< Quartzytes. range. The Upper black slate. 
[The Gunflint Beds. 
r The modified con- 
J Ogishke Conglom- glomerate south of the The Lower slate con- 
"''l erate. Gogebic range, (the glomerate. 
[ granite.) 
No attempt will be made here to find parallels of these for- 
mations in other parts of the country. It is suffcient to call at- 
tention to the discovery of fossils of primordial character, or 
perhaps pre-primordial, in the Catlinite beds of south-western 
Minnesota, and hence to the necessity of removing the Huronian 
from the Archaean. 
THE UNCONFORMITIES OF THE ANIMIKE 
IN MINNESOTA.' 
BY A. WINCHELL. 
"Animike" is a term employed to designate an assemblage 
of strata occupying a position between the Copper-bearing, 
Nipigon, or Kewenian series of lake Superior and the great 
gneissic and granitic base commonly designated Laurentian. 
The precise stratigraphical position and equivalences of the as- 
semblage are not yet settled by common consent; and it is the 
* The observations here recorded were made during a connection with 
the work of the Minnesota geological survey, and are published with the 
sanction of the state geologist. Full details will be given in the sixteenth 
annual report of the survey. 
