GEOG 2RC3 Lecture Notes - Lecture 2: Ordovician, Ellesmere Island, Cenozoic
16 Sep 2014
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To consider the relationship between canada"s physical and human geographies. To examine the nature of environmental issues in canada. Since the end of the last ice age (12,000 ya), niagara falls has retreated" about 8km up the niagara river. Since father louis hennepin saw the falls in 1678, retreat=300m. Explanation for retreat"/recession geologic composition of niagara escarpment. Why is canada"s physical geography so essesntial to and understanding of its regional geography? (bone, 2014, 29) Physical landscapes differ in terms of: landforms, geology, climate, vegetation, soils, hydrology. Physiographic region: an area with distinct surface landform features (geomorphology) and underlying rock structure (geology); see fig. 2. 1, p. 33. Geomorphology: the study of landforms and the process(es) of their genesis (from. Igneous - rocks formed when minerals crystallize during the cooling of molten liquids, eg. , granite (heat: 2. Sedimentary - rocks formed through the layering of mineral particles, eg. , limestone (deposition: 3. Metamorphic existing rocks are altered through heat/pressure, eg. , shale transformed into slate (heat/pressure)
