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Definition
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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Chemical Weathering [image] |
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Definition
The breakdown of the primary minerals in the rock to new secondary minerals. |
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Definition
| The gradual movement downhill of loose soil, rock, gravel, etc.; solifluction. |
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| The process in which the surface of the earth is worn away by the action of ice, wind, running water and sunlight. |
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Definition
| To come off or separate into flakes, scales, or layers. |
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Definition
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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| The downhill movement of weathered material under the force of gravity. The speed can vary considerably, from soil creep, where the movement is barely noticeable, to slumps, slides and mudflows, where the movement becomes increasingly more rapid. |
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Mechanical Weathering [image] |
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Definition
| The physical breaking down of rock, changing only its size (smaller); examples are ice wedging, plant action, and pressure unloading. |
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Definition
| A flow of fine-grained, water saturated sediment in a stream channel. Common name for lahar. |
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Definition
| The process of combining oxygen with some other substance or a chemical change in which and atom loses electrons. |
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Definition
| The mineral or organic matter from which the upper layers of soil are formed. |
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Definition
| Soil that develops directly from weathering of the rock below. |
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Definition
| The part of the earth's surface consisting of humus and disintegrated rock |
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Definition
| The removal of soil by wind or water. |
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Definition
| A vertical section of the soil from the surface through all of its horizons. |
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Definition
| The underlying layer which is immediately beneath any A horizon. It is the main B horizon (usually the B2) and is often encountered between 30-60 cm. |
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Definition
| The top layer of native soil. This term may also apply to good quality soil sold at nurseries and garden centers. |
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Definition
| Soil not formed from the local rock but brought in from some other region and deposited, usually by running water or wind. |
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Definition
| A chemical or physical process in which rocks exposed to the weather are worn down by water, wind, or ice. |
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