CHAPTER XXIV

THE UPTILT OF THE LAND AT THE CLOSE OF THE ICE AGE

The response of the earth’s shell to its ice mantle—The abandoned strands as they appear to-day—The records of uplift about Mackinac Island—The present inclinations of the uplifted strands—The hinge lines of uptilt—Future consequences of the continued uptilt within the lake region—Gilbert’s prophecy of a future outlet of the Great Lakes to the Mississippi—Geological evidences of continued uplift—Drowning of southwestern shores of Lakes Superior and Erie—Reading references 340