Allochthonous
Definition
Having formed or originated elsewhere than its current location of deposition or existence; an element (rock mass, mineral, plant or animal species) foreign to the local environment in which it is integrated. In geology, it defines thrust sheets or sediments transported from great distances by tectonic or water forces, whereas in ecology it designates a species introduced into a biotope distinct from its native range.
Bilingual Equivalents
- Allochthonous
- Non-native
Grammatical & Source Details
| Inflection Type | Variable adjective with standard masculine, feminine, and structural plural morphological alterations. |
| Formation | Borrowed from French 'allochtone', originating from Greek elements 'allos' (other) and 'chthon' (earth, land). |
| Spelling / Pronunciation | [a.loh.ˈton] |
| Source | Dictionary of Tectonics, Stratigraphy, and Environmental Sciences |
Contextual Usage Examples
RO: Această pânză tectonică este un bloc alohton masiv, împins peste straturile autohtone în timpul orogenezei alpine.
EN: This tectonic sheet is a massive allochthonous block, pushed over the indigenous layers during the Alpine orogeny.
RO: Introducerea unui pește alohton în acest lac izolat a perturbat grav lanțul trofic și a dus la declinul speciilor native.
EN: The introduction of an allochthonous fish into this isolated lake severely disrupted the food chain and led to the decline of native species.
RO: Cercetătorii analizează praful alohton colectat din ghețari pentru a înțelege traiectoriile furtunilor de nisip africane.
EN: Researchers are analyzing allochthonous dust collected from glaciers to understand the trajectories of African sandstorms.
Idioms & Phrases
Specie alohtonă / Allochthonous species
RO: Organism vegetal sau animal care a fost răspândit în afara arealului său istoric natural în urma activităților umane deliberate sau accidentale.
EN: A plant or animal organism that has been dispersed outside its natural historical range as a result of deliberate or accidental human activities.
Pânză alohtonă / Allochthonous sheet
RO: Structură geologică complexă de mari dimensiuni care a fost dezlipită de pe substratul original și deplasată gravitațional sau tectonic.
EN: A large, complex geological structure that has been detached from its original basement and displaced gravitationally or tectonically.
Material organic alohton / Allochthonous organic matter
RO: Resturi vegetale și nutrienți generați într-un ecosistem terestru învecinat și transportați de ploi sau vânt în interiorul unui lac.
EN: Vegetal debris and nutrients generated in an adjacent terrestrial ecosystem and transported by rains or wind into a lake.
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