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Sorting describes the distribution of grain size of sediments, either in unconsolidated deposits or in sedimentary rocks. The degree of sorting is determined by the range of grain sizes in a sediment deposit and is the result of various transport processes ( rivers , debris flow , wind , glaciers , etc.).
Sedimentary rocks are types of rock that are formed by the accumulation or deposition of sediments, ie. ... the rock is called 'well-sorted', and when there is a ...
Conglomerate (/ k ən ˈ ɡ l ɒ m ər ɪ t /) is a sedimentary rock made up of rounded gravel-sized pieces of rock surrounded by finer-grained sediments (such as sand, silt, or clay). The larger fragments within conglomerate are called clasts, while the finer sediment surrounding the clasts is called the matrix.
In sedimentary geology, maturity describes the composition and texture of grains in clastic rocks, most typically sandstones, resulting from different amounts of sediment transportation. A sediment is mature when the grains in a sediment become well-sorted and well-rounded due to weathering or abrasion of the grains during transport.
A well-cemented coquina is classified as a biosparite (fossiliferous limestone) according to the Folk classification of sedimentary rocks. [ 6 ] Coquinas accumulate in high-energy marine and lacustrine environments where currents and waves result in the vigorous winnowing, abrasion, fracturing, and sorting of the shells that compose them.
The Jordan Formation is composed primarily of very mature, well-sorted sandstones of uncertain provenance. [5] Although it is composed primarily of quartz grains, feldspathic and lithic fragments are present in significant quantities, as are a variety of bioclasts derived from marine invertebrates.
Glaciers also pulverize rock into "glacial flour", ... from sedimentary rocks and young deposits of alluvial materials. ... was designed for well-sorted fine gravel ...
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