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formation

formation
1. (plant formation) In vegetation description and analysis, a classificatory unit which usually implies a distinctive physiognomy rather than a distinctive species composition. In detail, the various phytosociological traditions ascribe slightly different meanings and hierarchical status to the term. The early European schemes grouped associations into alliances and then formation groups (e.g. sclerophyllous scrub), and then formation classes (e.g. sclerophyllous woodland and scrub). The formation classes are roughly equivalent to the major world biomes.

2. See formation type.

3. The fundamental unit used in lithostratigraphy. Specific features distinguish one rock formation from another. The thickness of the formation is unimportant in its definition, as a given formation may vary within different outcrops. Formations may be subdivided into members and together several formations constitute a group.

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"formation." A Dictionary of Ecology. . Encyclopedia.com. 20 Aug. 2017 <http://www.encyclopedia.com>.

"formation." A Dictionary of Ecology. . Encyclopedia.com. (August 20, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/formation-0

"formation." A Dictionary of Ecology. . Retrieved August 20, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/formation-0

formation

formation
1. (plant formation) In vegetation description and analysis, a classificatory unit which usually implies a distinctive physiognomy rather than a distinctive species composition. In detail, the various phytosociological traditions ascribe slightly different meaning and hierarchical status to the term. The early European schemes grouped associations into alliances and then formation groups (e.g. sclerophyllous scrub), and then formation classes (e.g. sclerophyllous woodland and scrub). The formation classes are roughly equivalent to the major world biomes.

2. See FORMATION TYPE.

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"formation." A Dictionary of Plant Sciences. . Encyclopedia.com. 20 Aug. 2017 <http://www.encyclopedia.com>.

"formation." A Dictionary of Plant Sciences. . Encyclopedia.com. (August 20, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/formation-1

"formation." A Dictionary of Plant Sciences. . Retrieved August 20, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/formation-1

formation

for·ma·tion / fôrˈmāshən/ • n. 1. the action of forming or process of being formed: the formation of the Great Rift Valley. 2. a structure or arrangement of something: a cloud formation. ∎  a formal arrangement of aircraft in flight or troops: a battle formation | the helicopters hovered overhead in formation. ∎  Geol. an assemblage of rocks or series of strata having some common characteristic. DERIVATIVES: for·ma·tion·al / -shənl/ adj.

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"formation." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. 20 Aug. 2017 <http://www.encyclopedia.com>.

"formation." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (August 20, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/formation

"formation." The Oxford Pocket Dictionary of Current English. . Retrieved August 20, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/formation

formation

formation The fundamental unit used in lithostratigraphy. Specific features distinguish one rock formation from another. The thickness of the formation is unimportant in its definition, as a given formation may vary within different outcrops. Formations may be subdivided into members and together several formations constitute a group.

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"formation." A Dictionary of Earth Sciences. . Encyclopedia.com. 20 Aug. 2017 <http://www.encyclopedia.com>.

"formation." A Dictionary of Earth Sciences. . Encyclopedia.com. (August 20, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/formation

"formation." A Dictionary of Earth Sciences. . Retrieved August 20, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/formation

Formation

Formation

a formal assembly of troops; arrangement of rocks in a geological setting, 1815.

Examples: formation of clouds, 1808; of troop, 1796.

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"Formation." Dictionary of Collective Nouns and Group Terms. . Encyclopedia.com. 20 Aug. 2017 <http://www.encyclopedia.com>.

"Formation." Dictionary of Collective Nouns and Group Terms. . Encyclopedia.com. (August 20, 2017). http://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/formation

"Formation." Dictionary of Collective Nouns and Group Terms. . Retrieved August 20, 2017 from Encyclopedia.com: http://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/formation