最終更新日：2026/06/19

tufa

可算名詞不可算名詞

Calcareous lime deposited by precipitation from a body of water, such as a hot spring. / (petrology) A variety of volcanic rock, tuff.

日本語の意味

温泉などの水体からの沈殿により堆積した石灰質の物質 / 火山活動により形成された凝灰岩の一種

英語の意味

Calcareous lime deposited by precipitation from a body of water, such as a hot spring. / (petrology) A variety of volcanic rock, tuff.

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We hiked to the cliff to see the tufa terraces formed around the hot spring.

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私たちは崖までハイキングして、温泉の周囲に形成された石灰華の段丘を見に行きました。

詳細

意味（1）

Calcareous lime deposited by precipitation from a body of water, such as a hot spring.

B.J. Szabo presented the results of a survey of the tufa mounds that border Pyramid Lake indicating that uranium-series methods can be used to approximate the ages of such tufa deposits. In the Pyramid Lake Basin, tufas less than 50,000 years old contain large quantities of excess thorium, and the error in age estimates made using uranium-series methods is not small enough to confirm results from ¹⁴C determinations.

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詳細

意味（2）

(petrology) A variety of volcanic rock, tuff.

This again is followed by a bed of stony tufa of a reddish colour, containing fragments of a spongy lava, amphigone, pyroxene, mica, and common lava; and, like the former, traversed by argillaceous veins.

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