detritus

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Related to detrital: detrital minerals, Detrital sediment

detritus

1. a loose mass of stones, silt, etc., worn away from rocks
2. the organic debris formed from the decay of organisms
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

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).

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

detritus

Loose material which results from the disintegration of rock.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
Arditto (1983) suggested that much of the kaolinite matrix in the Pilliga Sandstone resulted from the post-depositional alteration of unstable detrital minerals by reaction with mobile groundwater.
This disproves our hypothesis that the estuary shifted from a grazer based food web to a detrital based food web when water levels dropped in 1999/2000.
Detrital processing in seagrass systems: a review of factors affecting decay rates, remineralization and detritivory.
Primary variation in the total iron content of Palaeozoic sedimentary rocks has been explained by different influx of detrital grains and various weathering and erosion during transgressive and regressive sea-level changes and climate changes (Ellwood et al.
It is not clear what controls the distribution of the detrital diamonds or the 'model' for the their provenance and formulation of a 'provenance model' became one of the research objectives.
Ranges of [delta] [C.sup.13] content in these detrital materials overlap (Fig.
Ankerite (ferroan dolomite) grains and detrital muscovite flakes 2-5 mm long occur throughout the formation; weathering of the former produces a characteristic pale orange weathering rind.
The qualitative and quantitative X-ray diffraction analysis established that its major minerals include detrital minerals like quartz and feldspars, with an average content of 45%, as well as clay minerals like kaolinite, andreattite and illite, with an average content of 37% (Table 1).
In this context, detrital zircon chronology appears to be a promising tool for provenance analysis of Baltic sedimentary basins.