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  2. Frost line - Wikipedia

    en.wikipedia.org/wiki/Frost_line

    The maximum frost depth observed in the contiguous United States ranges from 0 to 8 feet (2.4 m). [1] Below that depth, the temperature varies, but is always above 0 °C (32 °F). Alternatively, in Arctic and Antarctic locations the freezing depth is so deep that it becomes year-round permafrost, and the term "thaw depth" is used

  3. Fencepost limestone - Wikipedia

    en.wikipedia.org/wiki/Fencepost_limestone

    Fencepost limestone, Post Rock limestone, or Stone Post is a stone bed in the Great Plains notable for its historic use as fencing and construction material in north-central Kansas resulting in unique cultural expression. The source of this stone is the topmost layer of the Greenhorn Limestone formation.

  4. Frost line (astrophysics) - Wikipedia

    en.wikipedia.org/wiki/Frost_line_(astrophysics)

    In astronomy or planetary science, the frost line, also known as the snow line or ice line, is the minimum distance from the central protostar of a solar nebula where the temperature is low enough for volatile compounds such as water, ammonia, methane, carbon dioxide and carbon monoxide to condense into solid grains, which will allow their accretion into planetesimals.

  5. Active layer - Wikipedia

    en.wikipedia.org/wiki/Active_layer

    The red dotted-to-solid line depicts the average temperature profile with depth of soil in a permafrost region. The trumpet-shaped lines at the top show seasonal maximum and minimum temperatures in the "active layer", which commences at the depth where the maximum annual temperature intersects 0 °C. The active layer is seasonally frozen.

  6. Frost line (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/Frost_line_(disambiguation)

    In geology, the frost line is the level down to which the soil will normally freeze each winter. By an analogy, the term is introduced in other areas. Frost line (astrophysics), a particular distance in the solar nebula from the central protosun where it is cool enough for hydrogen compounds such as water, ammonia, and methane to condense into solid ice grains.

  7. Denzel Washington's 15 best and 15 worst movies, according to ...

    www.aol.com/denzel-washingtons-15-best-15...

    "With [screenwriter Hampton] Fancher's dialogue and Washington's comedic timing, 'The Mighty Quinn' is more fun than a cabana full of bananas," wrote Rita Kempley for The Washington Post. 8 (tie ...

  8. Rubble trench foundation - Wikipedia

    en.wikipedia.org/wiki/Rubble_trench_foundation

    To construct a rubble trench foundation a narrow trench is dug down below the frost line. The bottom of the trench would ideally be gently sloped to an outlet. Drainage tile, graded 1":8' to daylight, is then placed at the bottom of the trench in a bed of washed stone protected by filter fabric. The trench is then filled with either screened ...

  9. Soil salinity - Wikipedia

    en.wikipedia.org/wiki/Soil_salinity

    Salts dissolved from the soil accumulate at the soil surface and are deposited on the ground and at the base of the fence post. Saline incrustation in a PVC irrigation pipe from Brazil Soil salinity is the salt content in the soil ; the process of increasing the salt content is known as salinization . [ 1 ]

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