The Black River Escarpment is a geological feature in Southeastern
Ontario.
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][
]
The escarpment marks the boundary of the older
Canadian Shield
The Canadian Shield (french: Bouclier canadien ), also called the Laurentian Plateau, is a geologic shield, a large area of exposed Precambrian igneous and high-grade metamorphic rocks. It forms the North American Craton (or Laurentia), the anc ...
bedrock
In geology, bedrock is solid Rock (geology), rock that lies under loose material (regolith) within the crust (geology), crust of Earth or another terrestrial planet.
Definition
Bedrock is the solid rock that underlies looser surface mater ...
and more recent
Ordovician limestone.
The escarpment runs from
Penetanguishene on
Georgian Bay to
Kingston
Kingston may refer to:
Places
* List of places called Kingston, including the five most populated:
** Kingston, Jamaica
** Kingston upon Hull, England
** City of Kingston, Victoria, Australia
** Kingston, Ontario, Canada
** Kingston upon Thames, ...
on
Lake Ontario.
The cliffs that mark the escarpment, when present, generally average between and high.
See also
*
Niagara Escarpment
The Niagara Escarpment is a long escarpment, or cuesta, in Canada and the United States that runs predominantly east–west from New York through Ontario, Michigan, Wisconsin, and into Illinois. The escarpment is most famous as the cliff over ...
*
Onondaga Escarpment
*
Helderberg Escarpment
References
Geology of Ontario
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