allochthonous


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al·loch·tho·nous

 (ə-lŏk′thə-nəs)
adj.
1. Originating or formed in a place other than where found: allochthonous rocks; an allochthonous population.
2. Ecology Not indigenous: an allochthonous organism.

allochthonous

(əˈlɒkθənəs)
adj
(Geological Science) (of rocks, deposits, etc) found in a place other than where they or their constituents were formed. Compare autochthonous1
[C20: from Greek allokhthon, from allo- + khthōn (genitive khthonos) earth]
allogenic, allochthonous - Geological material that has been transported and then accumulates elsewhere is allochthonous, and sediment carried by a river is allogenic.
See also related terms for sediment.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.allochthonous - of rocks, deposits, etc.allochthonous - of rocks, deposits, etc.; found in a place other than where they and their constituents were formed
autochthonous - of rocks, deposits, etc.; found where they and their constituents were formed
Translations
References in periodicals archive ?
In rivers, POM consists of autochthonous matter, originating in the stream biotic complex, and allochthonous matter, arriving from the catchment area, especially during snow melt or heavy rainfalls (Aufdenkampe et al.
Meeting on the other hand, An encounter between young and old, Rich and poor, Allochthonous and autochthonous, Is created by bringing them together to enjoy an affordable lunch.
Puelo River, Renihue River) provide a large amount of allochthonous substances (Silva et al.
Acacia radiana ; Ricinus communis ; Acacia cyanophylla ; Solanum sp; Robinia pseudoacacia are allochthonous species that arrive to play a physiognomic role in communities, and contributes to the procession of hygrophilous associated species such as (Typha latifolia ; Juncus maritimus ; Arundo donax ; Carex sp).
This is likely to be particularly true in headwater streams, which are heavily influenced by the surrounding riparian vegetation due to the relatively high inputs of allochthonous organic matter and the close interactions between aquatic and terrestrial environments (Anderson and Sedell, 1979; Webster and Benfield, 1986; Tank et al, 2010).
Spatial heterogeneity, the amount and diversity of allochthonous materials (leaves, stems, and roots), sediment characteristics, roughness, color, and the stability of the substrates act directly on the colonization of benthic organisms (Clifford et al.
Background dynamic was affected by the input of high energy deposits coming from shallower and more proximal environments which incorporates allochthonous faunas with different preservation.
The Western Cordillera comprises allochthonous sequences of mafic volcanic rocks formed in island arc and plateau tectonic setting, with associated Upper Cretaceous marine sediments (Alvarez, 1979; Kerr et al, 1996; Toussaint and Restrepo, 1996; Villagomez et al, 2011).
2009), that the majority of magnetite crystals found in ALH84001 are allochthonous.
Conglomeratic Qahlah Formation only locally separates the allochthonous strata from the orange-yellow coloured Simsima Formation as it mainly infills palaeovalleys but this formation is not easily accessible during this excursion.