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Windblown sediment travels one of three ways--rolling, saltation or suspension in the air. Loess that is reworked by fluvial processes tends to have more poorly sorted sediment as compared to sediment sorted by only Aeolian processes because loess particles become mixed with preexisting sediment of varying grain sizes within bodies of water. [3]
Diagram showing well-sorted (left) and poorly sorted (right) grains. The size, form and orientation of clasts (the original pieces of rock) in a sediment is called its texture. The texture is a small-scale property of a rock, but determines many of its large-scale properties, such as the density, porosity or permeability. [17]
tillites, the sediments deposited directly by a glacier, are typically poorly sorted, matrix-supported conglomerates. The matrix is generally fine-grained, consisting of finely milled rock fragments. The matrix is generally fine-grained, consisting of finely milled rock fragments.
Sorting describes the distribution of grain size of sediments, either in unconsolidated deposits or in sedimentary rocks. Very poorly sorted indicates that the sediment sizes are mixed (large variance); whereas well sorted indicates that the sediment sizes are similar (low variance). speleothem
Diamictite (/ ˈ d aɪ. əm ɪ k t aɪ t /; from Ancient Greek dia-: 'through' and meiktós (µεικτός): 'mixed') is a type of lithified sedimentary rock that consists of nonsorted to poorly sorted terrigenous sediment containing particles that range in size from clay to boulders, suspended in a matrix of mudstone or sandstone.
Early researchers tended to prefer the term boulder clay for the same kind of sediments, but this has fallen into disfavor. [9] Where it is unclear whether a poorly sorted, unconsolidated glacial deposit was deposited directly from glaciers, it is described as diamict or (when lithified) as diamictite. [4]
Clastic sediments or sedimentary rocks are classified based on grain size, clast and cementing material composition, and ... As angular, poorly sorted, very immature ...
Diamicton (also diamict) (from Greek δια (dia-): through and μεικτός (meiktós): mixed) is a terrigenous sediment (a sediment resulting from dry-land erosion) that is unsorted to poorly sorted and contains particles ranging in size from clay to boulders, suspended in an unconsolidated matrix of mud or sand. Today, the word has strong ...