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Glacial Landforms in the Peterborough Ontario Region

by the geology of the area (Otonabee Region Conservation Authority, 1983, p. 2-i). This fact is supported by the local variations of the landscape elements studied in this report. Section 2: GeomorphologyPart I: Bedrock KnobThe Bedrock Knob, as discussed earlier, is an elevated portion of the Canadian Shield. The Shield rock is a hard crystalline structure that is very resistance to weathering and erosion. Geomorphological features in the area are largely due to glaciation. Recent changes to the area have occurred where glacier deposits or sedimentary rock are present. Geomorphology was not studied by a particular group of students at the Bedrock Knob, so it was not a major consideration in this area. This may be because, while some Paleozoic outliers are present, most of the surface material has been transported away by glaciers, revealing the granite bedrock. The area was not one of deposition. The terrain is rough with some rolling hills and swampy areas (evidence of poor drainage). At the base of the cliffs, a general low point for the area, there is a swamp. Dead trees in the swamp indicate drainage has recently changed, possibly due to the construction of the road. Part II: Bridgenorth Esker, Burnham Park, and the Rice Lake Drumlin.The Bridgenorth Esker is in an area of thick glacial deposits and sediments. Stratification is visible on an excavated section of the esker and suggests a range of water velocities produced this landform. Generally, the top portion of the esker contains the majority of stratification, while the rest of the esker is a mixture of sand and gravel. This suggests that the majority of the esker was deposited over a short duration of high flow and the stratified sediments over a longer duration of lower flow. There were also small changes in composition from one end of the esker to the other. Mark S. Burnham Park is a nearly central location in the Peterborough drumlin field. Drumlins situat...

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