1) How was Niagara Falls formed?
Niagara Falls formed between 8,000 to 12,000 years
ago when the last glacier retreated from this
region allowing the Niagara River to plummet over
the Niagara Escarpment between Lake Erie and Lake
2) How old is it?
are thought to have formed 8 - 12 thousand years
3) What is the rate of erosion on
The falls migrate upstream at an
average rate of about 1 meter per year. This rate
is thought to have been greater in the past before
Canada and the U.S. began diverting water from the
Niagara River to produce hydro-electric
4) Any other interesting tidbits of
information that may be known would be greatly
The geology of the region is
what allows for the spectacle that is the falls to
retreat so dramatically. The area is characterized
by a Dolomite capstone left behind as glaciers
retreated over an easily eroded shale. The
turbulence at the base of the falls is eroding the
shale, causing the falls to undercut the dolomite
capstone causing head ward erosion. If you want
more detail, check out this website, it seems to
be pretty accurate.
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