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单词 allochthonous
释义

allochthonous

/əˈlɒkθənəs /
adjective Geology
Denoting a deposit or formation that originated at a distance from its present position. Often contrasted with autochthonous.The fossils of the westernmost exposures of the Hoko River Formation are allochthonous, preserved in reworked concretions within conglomerates that were deposited as part of a submarine fan system during late Eocene time....
  • However, this does not prove that the Moine rocks necessarily constitute an allochthonous terrane in the North American sense.
  • Although some skeletal remains are evidently allochthonous, other remains are probably parautochthonous.

Origin

Early 20th century: from allo- 'other' + Greek khthōn 'earth' + -ous.

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更新时间:2024/9/22 4:07:59