English Dictionary

glaciation

名詞

可算名詞 不可算名詞

The process of covering with a glacier, or the state of being glaciated; the production of glacial phenomena; an ice age / A particular instance of glacier formation. / The act of freezing.

日本語の意味

氷河によって覆われる過程、または氷河に覆われた状態 / 氷河現象が発生する作用 / 氷河期、あるいは氷河が形成される具体的な事例 / 凍結する行為

Evidence of ancient glaciation is visible in the smoothed bedrock and striations left behind by moving ice.

平滑になった基盤岩や移動する氷が残した擦り痕に、古代の氷河化の証拠が見られる。

意味（1）

The process of covering with a glacier, or the state of being glaciated; the production of glacial phenomena; an ice age

That the habitability of our planet was severely endangered by the significant rise in oxygen levels and reduction in methane due to oxygen-producing bacteria combined with the low luminosity of the Sun in the Proterozoic era (2500– 542 million years ago) is suggested by geological evidence for severe global glaciations in this epoch.

意味（2）

A particular instance of glacier formation.

Deposits of the Caribou Hills glaciation only locally retain a distinct hummocky morainal form, with filled kettle depressions and subdued knobs. Along the mountain fronts the marginal deposits of this glaciation reach an average altitude of slightly more than 3,000 feet.

意味（3）

The act of freezing.

For cave glaciation to occur it is necessary that the air temperature outside the caves be negative either for all or part of a year; such conditions exist in many regions of the world.

glaciations （ plural ）