GEOG 290 Lecture 2: Lesson 2
Document Summary
Physical base of canada: physiographic regions of canada, climate types and zones, rivers and drainage basins. Physiography: a study of landforms, their underlying geology and the processes that shape these landforms(geomorphology) Igneous: rocks formed when magma or lava cools. Denudaion: process of breaking down and removing loose material found at the earth"s surface(overarching term of erosion) Erosion: displacement of loose materials by processes such as wind, water, or ice and by downward movement by gravity. Deposiion: the deposit of material on the earth"s surface by processes such as ice, water and wind. Largest physiographic region in canada, extending over nearly half of the country"s land mass. Rock-like surface consists mainly of rugged, rolling upland. During last ice advance, surfaces were subjected to glacial erosion and deposiion. Glacial erosion: paricles and rocks incorporated by meling and refreezing, plucking as ice freezes into cracks in rock surface and then pulled along. Creates roche moutonnee landform(slanted hill, then large drop)
