detritus

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detritus

1. a loose mass of stones, silt, etc., worn away from rocks
2. the organic debris formed from the decay of organisms

Detritus

 

(1) In biology, dead organic or partially mineralized matter suspended in water in the form of particles measuring from several microns to several centimeters. Detritus forms from moribund plants and animals or their excretions, and frequently the organic matter is adsorbed on the surface of mineral suspensions. Microorganisms are al-ways present in detritus, which serves as the principal food for the water animals known as detritophages.

(2) In geology, detritus is organogenetic fragmentary material found in sediments or sedimentary rocks and composed of shell fragments; the skeletal fragments of sponges, bryozoans, corals, or other invertebrates; and the bones of vertebrates (bone detritus) and fragments of plant tissue (plant detritus).

detritus

[də′trīd·əs]
(ecology)
Dead plants and corpses or cast-off parts of various organisms.
(geology)
Any loose material removed directly from rocks and minerals by mechanical means, such as disintegration or abrasion.

detritus

Loose material which results from the disintegration of rock.
References in periodicals archive ?
The sediment lithology of core KC081 from Lake IKnzi Depth from the Lithological description sediment surface, cm 0-200 Gyttja 200-270 Dark brown detritic gyttja with laminations 270-570 Clayey gyttja with laminations 570-840 Dark brown carbonaceous gyttja with lighter interlayers 840-870 Silty carbonaceous gyttja with macrofossils and thin peat layer (859-865 cm) 870-920 Sand with silt and clay fractions Table 3.
4) affecting the basalts as well as the detritic series in the Cerro Cebollin is based on stratigraphic observations.
At the top of the sequence, the detritic layers are very altered and are covered by a thin centimetric brownish layer interpreted as a paleosoil (see also Di Marco et al.
In the case of detritic materials broken up by the ice, the fine residues, mainly muds, are also translocated downwards and a loam-enriched Bt horizon forms.
It exposes Mesozoic carbonate rocks and the basins are filled with Neogene and Quaternary detritic sediments (Simon et al.
The Vall d'Angel range has a NE-SW direction and is formed mainly by Mesozoic detritic and carbonate rocks.
In 1841, near the Urals, he discovered a thick formation of red detritic materials with fossiliferous limestones in the lower layers.
The series of reflectors were marked on seismic section, called Base Detritics, defines a buildup.
In the northernmost part of this area the whole imbricate structure has been subtracted and the Ordovician rocks are separated from the Carboniferous detritics by a normal fault.