Allochthonous

Allochthonous

A term which connotes that something (an allochthon) is derived from someplace else, or is not indigenous to a site or area. For example, the allochthonous parent material of an alluvial soil, or an allochthonous community of organisms that invaded an area (i.e., an 'allochthonous flora').

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Part of Speech: noun
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Industry/Domain: Earth science
Category: Soil science
Company: Soil Science Society of America
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Related terms

allochthonous

Biology; Marine biology

Exogenous, originating outside and transported into a given system or area (Lincoln et al., 1998).

allochthonous

Earth science; Soil science

A term which connotes that something (an allochthon) is derived from someplace else, or is not indigenous to a site or area. For example, the allochthonous parent material of an ...

allochthonous

Oil & gas; Drilling

Pertaining to materials, particularly rock masses, that formed somewhere other than their present location, and were transported by fault movements, large-scale gravity sliding, ...

allochthonous

Oil & gas; Oilfield

Pertaining to materials, particularly rock masses, that formed somewhere other than their present location, and were transported by fault movements, large-scale gravity sliding, ...

allochthonous

Earth science; Geology

Refers to something formed elsewhere than its present location. Antonym of autochthonous.

allochthonous

Engineering; Civil engineering

Exotic species of a given area. Also refers to deposits of material that originated elsewhere, e.g., drifted plant material on the bottom of a lake.

swamp

Earth science; Soil science

Swamp is an area which is flooded or drenched with water and related to plunge or cause to sink.

semiarid

Earth science; Soil science

Fairly dry because of low rainfall. Semiarid regions, such as a prairie, usually have enough water for grasses and some bushes to grow.

talus

Earth science; Soil science

A sloping pile of small pieces of rock that is at the base of a cliff is called talus.

silt

Earth science; Soil science

Small grains or particles of broken down rock. Silt particles are smaller than grains of sand but larger than the particles in clay.

talc

Earth science; Soil science

A very soft, white or green mineral found in igneous and metamorphic rocks is called talc.

stone

Earth science; Soil science

A general term for rock, especially as used in construction. A hard clump of minerals that forms in a part of body.

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