GEOG 2OC3 Lecture Notes - Lecture 3: Eramosa Karst, Carbonate Rock
19 Oct 2020
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Document Summary
The region including southern ontario was once the location of an inland sea. The figure above is a stratigraphic cross section, showing all of the layers of rock (representing different depositional environments) through the millions of years of disposition. This can help geologists to determine the paleoenvironment of the area at the time in order to see how the environment of the region changed over time. Most rocks are (at least a little bit) soluble in water. Carbonate rock (i. e. limestone) is particularly soluble and can create formations due to dissolved pockets or patches in the rock (termed karst formations). The niagara escarpment is a result of uneven physical, chemical and glacial erosion of limestone rocks over millions of years and many different types of rocks. Karst landscapes: the carbonate and shale rocks of the niagara escarpment have been eroding for hundreds of thousands of years, creating the beautiful valley landscapes that we have the pleasure of viewing today.
