

THE MOUNTAIN IRON PLATE OF THE MBSABI IRON RANGE, 1899. N. H. WINCHELL. 



The Cretaceous ocean was once spread continuously over this part of the Mesabi 

 range, and hence probably over much of northeastern Minnesota. Cretaceous strata 

 are known at several points within the area of this plate, and they may exist exten- 

 sively in the swampy tract lying south from the Mesabi range drained by the St. 

 Louis river and its tributaries. N. H. w. 



