5° 
ALASKA GLACIERS 
curvature suggest that they are connected with earlier 
positions of the margin of Malaspina Glacier, and these 
corrugations end against a great shoal which spans the 
mouth of the bay from cape to cape. This shoal is 
slightly convex toward the ocean, and its submergence 
ranges from 50 to 80 feet. It is believed to mark a former 
extension of the seaward face of Malaspina Glacier. 
FIG. 27. MAP OF YAKUTAT BAY, SHOWING CONFIGURATION OF BOTTOM. 
Adapted from U. S. Coast Survey. Places where no soundings were made are indicated by ? ?. 
All or nearly all of these ridges are probably connected 
with the Pleistocene history of the region, but the moraine 
