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Allochthon
(redirected from Allochton)

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allochthon [ə′läk·thən]
(geology)
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.
Allochthon 

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.
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Perhaps the most important practical results of the Caledonian orogeny are massive mature and multi-folded black alum shale deposits in Jamtland, Sweden and the possible allochton from the same or similar source at Sillamae, Estonia.
Estonian graptolitic argillites--ancient ores or future fuels? by Lippmaa, E.; Maremae, E.; Pihlak, A.-T.; Aguraiuja, R. / Oil Shale
 
 
 
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