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  2. Soil mechanics - Wikipedia

    en.wikipedia.org/wiki/Soil_mechanics

    These minerals tend to form in sheet or plate like structures, with length typically ranging between 10 −7 m and 4x10 −6 m and thickness typically ranging between 10 −9 m and 2x10 −6 m, and they have a relatively large specific surface area. The specific surface area (SSA) is defined as the ratio of the surface area of particles to the ...

  3. Soil formation - Wikipedia

    en.wikipedia.org/wiki/Soil_formation

    Chemical weathering mainly results from the excretion of organic acids and chelating compounds by bacteria [24] and fungi, [25] thought to increase under greenhouse effect. [26] Physical disintegration is the first stage in the transformation of parent material into soil.

  4. Rock cycle - Wikipedia

    en.wikipedia.org/wiki/Rock_cycle

    Weathering and erosion break the original rock down into smaller fragments and carry away dissolved material. This fragmented material accumulates and is buried by additional material. While an individual grain of sand is still a member of the class of rock it was formed from, a rock made up of such grains fused together is sedimentary.

  5. Weathering - Wikipedia

    en.wikipedia.org/wiki/Weathering

    Physical weathering, also called mechanical weathering or disaggregation, is the class of processes that causes the disintegration of rocks without chemical change. Physical weathering involves the breakdown of rocks into smaller fragments through processes such as expansion and contraction, mainly due to temperature changes.

  6. Carbonate–silicate cycle - Wikipedia

    en.wikipedia.org/wiki/Carbonate–silicate_cycle

    This figure describes the geological aspects and processes of the carbonate silicate cycle, within the long-term carbon cycle. The carbonate–silicate geochemical cycle, also known as the inorganic carbon cycle, describes the long-term transformation of silicate rocks to carbonate rocks by weathering and sedimentation, and the transformation of carbonate rocks back into silicate rocks by ...

  7. Soil - Wikipedia

    en.wikipedia.org/wiki/Soil

    Erosion is distinguished from weathering, since erosion also transports eroded soil away from its place of origin (soil in transit may be described as sediment). Erosion is an intrinsic natural process, but in many places it is greatly increased by human activity, especially unsuitable land use practices. [234]

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