GEOG 1F91 Lecture Notes - Lecture 12: Outwash Plain, Moraine, Terminal Moraine
1 Apr 2016
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Carve out basins that later filled with water. Till: non-stratified drift (unsorted mixture: no water transport. Ablation till- ice melts- deposition (ground moraine) Can rise up slope= flow under pressure. Water flow off ice into a lake. Outwash plain: broad flat region of stratified deposits. Astronomical solution: alter insolation (lat and season) Permanently frozen ground (below 0 degrees for at least 2 years) Dirt gets on your clothes or under our fingernails. Vast areas have no soil (dunes, bedrock, lava flow) Ecosystem service: benefit to society derived from a healthy ecosystem property of process (soil) 19th century- soil genesis controlled: climate and vegetation. 20th century extend idea: 5 main factors. Climate (correlation with major climate types: temperature weathering, plant growth, microorganisms, precipitations- weathering, sediments, trans, plant growth, etc. Organisms/vegetation- organic matter (living/dead: nutrients, water, air, weathering, etc. Relief (topography) (elevation, slope, aspect: microclimate, drainage, Parent material (rock, lava/ash, sediment: influence chemistry, fertility, etc.
