Suddenly, the Earth shook, pushing forth the Appalachian mountains.<br/>Rivers flowed in new patterns, carrying mud westward.<br/>Where the rivers intermingled, huge muddy deltas formed, sprawling<br/>over 600 kilometres, from east of what is now Lake Ontario to beyond<br/>the present shore of Lake Huron. That mud, cemented by the eons,<br/>forms the distinctive purple-red shale called the Queenston Formation<br/>and the sandy ledge-forming rocks of Niagara Gorge.
Niagara
Suddenly, the Earth shook, pushing forth the Appalachian mountains.
Rivers flowed in new patterns, carrying mud westward.
Where the rivers intermingled, huge muddy deltas formed, sprawling
over 600 kilometres, from east of what is now Lake Ontario to beyond
the present shore of Lake Huron. That mud, cemented by the eons,
forms the distinctive purple-red shale called the Queenston Formation
and the sandy ledge-forming rocks of Niagara Gorge.
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