pe, Mb TOROS ee epee Se ee eae eee See 
the Copper-bearing Rocks of Lake Superior. 327 
"The strike of this rapid slope in the bottom of the ancient sea, 
coinciding with the break, had, as already indicated, a general 
ultimately made to overlap the portion of these resting on the 
edge of the higher pees after. probably thrusting over to an 
inverted dip, the broken edge of the upper forisalons. 
shallow-water strata of the higher terrace, relieved 1 
by the break, would remain comparatively undistur 
gneiss would 
ee. 
parallel cor- 
ying a directi 
on 
