é 
308 J.D. Whitney on the Huronian and Laurentian 
In regard to the sandstone on the north side of the trap range, 
the evidence is equally clear that it cannot be separated from it, 
either lithologically or stratigraphically. Towards the eastern 
extremity of Point Keweenaw the sandstone is not exposed on 
the shore of the lake, having been washed away, but conglomer- 
ate and trap make their appearance and occupy the coast on the _ 
north side of the Point, to the distance of five miles west of the 
mouth of Eagle River. From this point onward, the sandstone 
ars in strata dipping at a low angle to the north and resem- 
_ bling in lithological character that which forms the shore of the 
_ lake from Saut Ste. Marie to the Pictured Rocks. “Near the Por- 
 ¢upine Mountains and at the Montreal River, however, it has a 
higher dip owing to the proximity of the igneous rocks to the 
rap only in being somewhat darker colored and having the 
quartzose grains more firmly cemented together. The number 
onally seen, 
The lithological ch 
combined 
Much of it is mad 
* For 
Report, Part 
