Ancient Waterways Society explorers,

Here is an intriguing article written nearly a decade ago that I
happened upon doing a search of whale bone artifacts. I have
scanned/pasted the author's conclusion, hoping to entice those of you
researching the ancient Great Lakes to check out the full article via
the enclosed link. Something to chew on, for those researching
ancient seas and inland waterways.

...."The fossil whales and walrus of Michigan and other areas are
clearly evidence that the land of the Great Lakes region has emerged
from the sea only quite recently. The differential earth movements
that formed the crustal depression of the Michigan Basin and raised
the Canadian Shield probably generated the rapid currents of
displaced flood waters that caused the excavation of the basins of
the Great Lakes, and the exhumation of the Shield. Sediment eroded
from these areas may have been redeposited far to the south, some of
it, perhaps, in the continental shelves...." (Cox)

http://www.sentex.net/~tcc/michwls.html

Susan