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A rock that was transported a great distance from its original deposition by some tectonic process, generally related to overthrusting, recumbent folding, or gravity sliding.



an organism inhabiting some locality which, unlike an autochthon, arose in the course of evolution in some other place. It reached the regions inhabited at the present time by migrating from its own original center of distribution. For example, the opossum and several hummingbird species are allochthons of North America, which they entered from South America.

References in periodicals archive ?
The SCP describes "integration" in its Annual Report of 2005 as: "Many definitions of 'integration' are possible, however in general one can say that integration refers to the degree of participation by allochthones in the host society" (SCP, 2005; our translation).