—-—- 51 — 
Beds of the same character are also visible along Rio Trombudo on 
the road between Lages and Blumenau. 
Whether these whetstone grits and their accompanying dark 
shales along the Lages road are of same age as the lower sand- 
stone and shales which rest upon the granite near Minas is not 
known. 
Orleans Conglomerate 
Resting upon these lower sandstones and shales often in appar- 
ent unconformity, we find a coarse conglomerate which is well 
exposed in the town of Orleans, Santa Catharina, from which local- 
ity it has been named. It contains boulders of granite, quartzite, 
and other hard rocks, some of which are 20 to 25 centimeters in 
diameter. The same formation is frequently visible along Rio Tu- 
baréo between Minas and 2. kilometers below. The bore hole put 
down near Minas station began near the top of this rock and pass- 
ed through the same at a depth of 5.35 meters. In Rio Grande do 
Sul, large granite blocks are frequently found at this horizon, as 
well as at many points in Parana and the adjoining region of 
Santa Catharina, where several localities, near Rio Negro, 10 kilo- 
meters from any outcrop of granite, exhibit granite boulders in 
vast numbers up to 3 meters in diameter, all imbedded in a fine 
and apparently unstratified gray muddy sediment. Avery coarse de- 
posit with large rounded boulders of granite, quartzite, sandstone, 
silicified wood, etc., may also be seen resting unconformably upon 
Devonian shales at Ponta Grossa, and other localities in that region. 
This deposit appears to correspond closely tothe Dwyka conglomerate 
of South Africa, and most probably, like it, is of glacial origin al- 
though no scratches were observed upon the boulders in question. 
The weird shapes constituting the «rock city» of Villa Velha 
on the sumits south from Ponta Grossa, most probably belong at 
this same horizon, as well as the great conglomerate mass which 
rests unconformably upon the underlying Devonian shales 3 kilo- 
meters south from Jaguariahyva, state of Parana. 
