compaction

compaction
   A decrease in the volume of a mass of sediments from any cause. In general, compaction may be regarded as the decrease in the thickness of sediments, as a result of an increase in vertical compressive stress, and is synonymous with ‘one-dimensional consolidation,’ as used by engineers. The term compaction is applied both to the process and to the measured change in thickness. In thick fine-grained beds, compaction is a delayed process involving the slow escape of pore water and the gradual transfer of stress from neutral to effective. Until sufficient time has passed for excess pore pressure to decrease to zero, measured values of compaction are transient [21].

A Lexicon of Cave and Karst Terminology with Special Reference to Environmental Karst Hydrology. . 2002.

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  • Compaction — may refer to: Soil compaction, for mechanically induced compaction near the ground surface Compaction (geology), part of the process of lithification involving mechanical dewatering of a sediment by progressive loading under several km of… …   Wikipedia

  • compaction — ● compaction nom féminin (de compact) En métallurgie des poudres, densification résultant d une compression ou d un traitement thermomécanique. compaction [kɔ̃paksjɔ̃] n. f. ÉTYM. D. i.; de compact. ❖ ♦ Géol., techn. Densification; création d un… …   Encyclopédie Universelle

  • compaction — late 14c., from O.Fr. compaction, from L. compactionem a putting or joining together, noun of action from stem of compingere (see COMPACT (Cf. compact) (adj.)) …   Etymology dictionary

  • Compaction — Com*pac tion, n. [L. compactio.] The act of making compact, or the state of being compact. [Obs.] Bacon. [1913 Webster] …   The Collaborative International Dictionary of English

  • Compaction — Compaction. См. Уплотнение. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

  • compaction — [kəm pak′shən] n. a compacting or being compacted; compression …   English World dictionary

  • Compaction — Régression et dégradation des sols Pour les articles homonymes, voir Régression. Dans le domaine de la pédologie et de l écologie, la régression et la dégradation sont des processus d évolution associés à une perte d équilibre d un sol… …   Wikipédia en Français

  • compaction — Process that occurs during the morula stage of embryogenesis in which blastomeres increase their cell cell contact area and develop gap junctions. In mice compaction occurs at the 8 cell stage and after this the developmental fate of each cell… …   Dictionary of molecular biology

  • compaction — /keuhm pak sheuhn, kom /, n. 1. the act of compacting or the state of being compacted. 2. Geol. the consolidation of sediments resulting from the weight of overlying deposits. [1350 1400; ME compaccioun < L compaction (s. of compactio) a joining …   Universalium

  • compaction — noun The process of compacting something, or something that has been compacted. At Smithfield Frith is being shovelled up, his youth, his grace, his learning and his beauty: a compaction of mud, grease, charred bone …   Wiktionary

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