sand

matter

Definition: Sand is a granular material composed of finely divided mineral particles. Sand has various compositions but is defined by its grain size. Sand grains are smaller than gravel and coarser than silt. Sand can also refer to a textural class of soil or soil type; i.e., a soil containing more than 85 percent sand-sized particles by mass.The composition of sand varies, depending on the local rock sources and conditions, but the most common constituent of sand in inland continental settings and non-tropical coastal settings is silica (silicon dioxide, or SiO2), usually in the form of quartz.

Source: Wikipedia

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Occurs in:

• delta_beds~bottomset_sediment_sand__volume_fraction
• delta_beds~foreset_sediment_sand__volume_fraction
• delta_beds~topset_sediment_sand__volume_fraction
• delta_channel~main_entrance_water_sediment_sand__volume_fraction
• delta_channel~main_entrance_water_sediment_sand_grain__mean_of_diameter
• sea_bottom_sediment_sand__volume_fraction
• soil_sand__mass_fraction
• soil_sand__oven-dried_mass_fraction
• soil_sand__volume_fraction
• water_sand_grain__settling_speed