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chemical weathering [image] |
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| the process by which rocks are decomposed, dissolved or loosened by chemical processes to form residual materials |
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| the acid, H2CO3, formed when carbon dioxide dissolves in water, known in the form of its salts and esters, the carbonates. |
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| creep of soil on even slopes; often accelerated by spring freeze-and-thaw or general periglacial conditions. |
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| the process by which the surface of the earth is worn away by the action of water, glaciers, winds, waves, etc. |
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| peeling off in sheets rather than eroding grain by grain.It can happen in paper-thin layers on individual boulders, or it can take place in thick slabs. |
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| chemical decomposition in which a compound is split into other compounds by reacting with water. |
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When water infiltrates fractures in rock and freezes, the force of expansion is great enough to break
the rock into smaller pieces. |
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| the downward falling or sliding of a mass of soil, detritus, or rock on or from a steep slope. |
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| movements of masses of bodies of soil, bed rock, rock debris, soil, or mud which usually occur along steep-sided hills and mountains because of the pull of gravity. |
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mechanical weathering [image] |
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| | the erosion or breakdown of rock into smaller fragments by natural physical agents with no chemicals involved |
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| A downhill movement of soft wet earth and debris, made fluid by rain or melted snow and often building up great speed. |
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| The combination of a substance with oxygen |
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| Parent material, in soil science, means the underlying geological material (generally bedrock or a superficial or drift deposit) in which soil horizons form |
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the soil that is remaining after the soluble elements have been dissolved |
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| the portion of the earth's surface consisting of disintegrated rock and humus |
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| the washing away of soil by the flow of water |
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| a vertical succession of horizons, commonly lettered A, B, C (beginning at the surface), that have been subjected to soil-forming processes, chiefly leaching and oxidation |
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| the bed or stratum of earth or earthy material immediately under the surface soil. |
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| the fertile, upper part of the soil. |
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| Soil developed through the action of weathering and other agencies on materials, originating from previously existing soil and from rock debris, which have been eroded from their former locations and redeposited by the transporting agents. |
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| Geology. the various mechanical and chemical processes that cause exposed rock to decompose. |
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