| 释义 |
sediment
sed·i·ment S0212000 (sĕd′ə-mənt)n.1. Material that settles to the bottom of a liquid; lees.2. Solid fragments of inorganic or organic material that come from the weathering of rock and are carried and deposited by wind, water, or ice.
[Latin sedimentum, act of settling, from sedēre, to sit, settle; see sed- in Indo-European roots.]sediment (ˈsɛdɪmənt) n1. matter that settles to the bottom of a liquid2. (Geological Science) material that has been deposited from water, ice, or wind[C16: from Latin sedimentum a settling, from sedēre to sit] sedimentous adjsed•i•ment (ˈsɛd ə mənt)
n. 1. the matter that settles to the bottom of a liquid; lees; dregs. 2. Geol. mineral or organic matter deposited by water, air, or ice. [1540–50; < Latin sedimentum=sedi- (comb. form of sedēre to sit, settle) + -mentum -ment] sed`i•men′tous, adj. sed·i·ment (sĕd′ə-mənt)1. Geology Silt, sand, rocks, fossils, and other matter carried and deposited by water, wind, or ice.2. Chemistry Particles of solid matter that settle out of a suspension to the bottom of the liquid.sediment- decant - Means to pour wine, taking pains not to disturb any sediment at the bottom; decant comes from Latin de- and canthus, "angular lip of a jug."
- allogenic, allochthonous - Geological material that has been transported and then accumulates elsewhere is allochthonous, and sediment carried by a river is allogenic.
- lithification - The process of compaction of sediment into stone.
- swarve - To choke with sediment.
Thesaurus| Noun | 1. |  sediment - matter that has been deposited by some natural processdepositmatter - that which has mass and occupies space; "physicists study both the nature of matter and the forces which govern it"alluvial deposit, alluvial sediment, alluvium, alluvion - clay or silt or gravel carried by rushing streams and deposited where the stream slows downdregs, settlings - sediment that has settled at the bottom of a liquidlees - the sediment from fermentation of an alcoholic beveragelick, salt lick - a salt deposit that animals regularly lickevaporite - the sediment that is left after the evaporation of seawater | | Verb | 1. | sediment - deposit as a sedimentposit, situate, deposit, fix - put (something somewhere) firmly; "She posited her hand on his shoulder"; "deposit the suitcase on the bench"; "fix your eyes on this spot"sediment - settle as sediment | | 2. | sediment - settle as sedimentsettle, settle down - settle into a position, usually on a surface or ground; "dust settled on the roofs"sediment - deposit as a sediment |
sedimentnoun dregs, grounds, residue, lees, deposit, precipitate, settlings ocean sedimentssedimentnounMatter that settles on a bottom or collects on a surface by a natural process:deposit, dreg (often used in plural), lees, precipitate, precipitation.Translationssediment (ˈsedimənt) noun the material that settles at the bottom of a liquid. Her feet sank into the sediment on the river bed. 沈積物 沉积物sediment
sediment, mineral or organic particles that are deposited by the action of wind, water, or glacial ice. These sediments can eventually form sedimentary rocks (see rockrock,
aggregation of solid matter composed of one or more of the minerals forming the earth's crust. The scientific study of rocks is called petrology. Rocks are commonly divided, according to their origin, into three major classes—igneous, sedimentary, and metamorphic.
..... Click the link for more information. ). Classification of Sediments Sediments are commonly subdivided into three major groups—mechanical, chemical, and organic. Mechanical, or clastic, sediments are derived from the erosion of earlier formed rocks on the earth's surface or in the oceans. These are then carried by streams, winds, or glaciers to the site where they are deposited. Streams deposit sediment in floodplainsfloodplain,
level land along the course of a river formed by the deposition of sediment during periodic floods. Floodplains contain such features as levees, backswamps, delta plains, and oxbow lakes.
..... Click the link for more information. or carry these particles to the ocean, where they may be deposited as a deltadelta
[from triangular shape of the Nile delta, like the Greek letter delta], a deposit of clay, silt, and sand formed at the mouth of a river where the stream loses velocity and drops part of its sediment load.
..... Click the link for more information. . Ocean sediments, especially in the form of turbidites, are usually deposited at the foot of continental slopes (see oceansocean,
interconnected mass of saltwater covering 70.78% of the surface of the earth, often called the world ocean. It is subdivided into four (or five) major units that are separated from each other in most cases by the continental masses. See also oceanography.
..... Click the link for more information. ). Glaciers carry sediment frozen within the mass of the ice and are capable of carrying even huge boulders (erratics). Chemical sediments are formed by chemical reactions in seawater that result in the precipitation of minute mineral crystals, which settle to the floor of the sea and ultimately form a more or less chemically pure layer of sediment. For example, evaporation in shallow basins results in a sequence of evaporite sediments, which include gypsum and rock salt. Organic sediments are formed as a result of plant or animal actions; for example, peat and coal form by the incomplete decay of vegetation and its later compaction. Deep-ocean sediment known as pelagic ooze consists largely of the remains of microscope organisms (mostly foraminifera and diatoms) from the overlying waters as well as minor amounts of windblown volcanic and continental dust. Limestones are commonly formed by the aggregation of calcite shells of animals. Formation of Sedimentary Rock Sediments form sedimentary rock by compaction and cementation of the particles. Thus, coarse sediments become conglomeratesconglomerate,
in geology, sedimentary rock composed largely of pebbles or other rounded particles whose diameter is larger than 2 mm (.08 in.). Essentially a cemented gravel, conglomerates are formed along beaches, as glacial drift, and in river deposits.
..... Click the link for more information. ; sands become sandstonesandstone,
sedimentary rock formed by the cementing together of grains of sand. The usual cementing material in sandstone is calcium carbonate, iron oxides, or silica, and the hardness of sandstone varies according to the character of the cementing material; quartz sandstones
..... Click the link for more information. ; and muds become shaleshale,
sedimentary rock formed by the consolidation of mud or clay, having the property of splitting into thin layers parallel to its bedding planes. Shale tends to be fissile, i.e., it tends to split along planar surfaces between the layers of stratified rock.
..... Click the link for more information. . Sedimentary rocks make up only about 5% of all rocks of the earth's crust, yet they cover 75% of the land area in a veneer that averages 2.26 km (1.4 mi) in thickness, ranging from 0 to 12.9 km (0–8 mi). SedimentTransported and deposited particles or aggregates derived from rocks, soil, or biological material.sediment[′sed·ə·mənt] (geology) A mass of organic or inorganic solid fragmented material, or the solid fragment itself, that comes from weathering of rock and is carried by, suspended in, or dropped by air, water, or ice; or a mass that is accumulated by any other natural agent and that forms in layers on the earth's surface such as sand, gravel, silt, mud, fill, or loess. A solid material that is not in solution and either is distributed through the liquid or has settled out of the liquid. sedimentThe matter which settles to the bottom of water or any other liquid.sediment material that has been deposited from water, ice, or wind sediment
sediment [sed´ĭ-ment] a precipitate, especially that formed spontaneously.sed·i·ment (sed'i-mĕnt), 1. Insoluble material that tends to sink to the bottom of a liquid, as in hypostasis. Synonym(s): sedimentum2. To cause or effect the formation of a sediment or deposit, as in centrifugation or ultracentrifugation. Synonym(s): sedimentate [L. sedimentum, a settling, fr. sedeo, to sit, settle down] sed·i·ment (sed'i-mĕnt) 1. Insoluble material that tends to sink to the bottom of a liquid, as in hypostasis. 2. To cause the formation of a sediment or deposit, as in the case of centrifugation or ultracentrifugation.
Synonym(s): sedimentate. [L. sedimentum, a settling, fr. sedeo, to sit, settle down]sed·i·ment (sed'i-mĕnt) 1. Insoluble material that tends to sink to the bottom of a liquid, as in hypostasis. 2. To cause the formation of a sediment or deposit.
Synonym(s): sedimentate. [L. sedimentum, a settling, fr. sedeo, to sit, settle down]sediment
Synonyms for sedimentnoun dregsSynonyms- dregs
- grounds
- residue
- lees
- deposit
- precipitate
- settlings
Synonyms for sedimentnoun matter that settles on a bottom or collects on a surface by a natural processSynonyms- deposit
- dreg
- lees
- precipitate
- precipitation
Synonyms for sedimentnoun matter that has been deposited by some natural processSynonymsRelated Words- matter
- alluvial deposit
- alluvial sediment
- alluvium
- alluvion
- dregs
- settlings
- lees
- lick
- salt lick
- evaporite
verb deposit as a sedimentRelated Words- posit
- situate
- deposit
- fix
- sediment
verb settle as sedimentRelated Words- settle
- settle down
- sediment
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