Processes in Cold Environments 0.0 / 5 ? GeographyHot and cold environmentsASOCR Created by: Caitlin xCreated on: 08-05-15 12:18 Chemical Weathering by Meltwater Water becomes acidic because of CO2 containing water This increases at low temperatures Weathers carbonate rocks Rate depends on: Local geology Velocity of glacier Load 1 of 12 Plucking Ripping out of the material from the bedrock 2 of 12 Abrasion Erosion of the bedrock by material 3 of 12 Freeze Thaw Weathering Expansion and contraction of rocks causes rock fracture due to: Pressure release Exfoliation Dilatation 4 of 12 Frost Heave Water freezes in soil and is pushed up to the surface and causes a churning action 5 of 12 Geliturbation / Congeliturbation Other terms for Frost Heave 6 of 12 Freeze Thaw Flucuation around 0 degrees and cause the splitting of rocks: congelifraction 7 of 12 Nivation Freeze thaw weathering under a snow bank 8 of 12 Ice lensing Growth of ice crystals in soil 9 of 12 Solifluction Flowing soil (like soil creep) Water freezes in the soil and segregates soil particles Cannot infiltrate permafrost and travels over the surface 10 of 12 Chemical Weathering - Carbonation Weathering in which calcium carbonate reacts with acid water to become soluble and be removed 11 of 12 Chemical Weathering - Hydrolysis Water reacts with feldspars to produce clay minerals 12 of 12
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