English Dictionary

rubidium-strontium

名詞

限定用法 不可算名詞

(attributive) Designating a method of geological dating based on the relative amounts in rock of rubidium-87 and its beta-decay product, strontium-87.

日本語の意味

岩石中のルビジウム87とそのベータ崩壊生成物であるストロンチウム87の比率に基づいて地質年代を測定する方法。

The geochronologist applied the rubidium-strontium technique to determine the age of the metamorphic rock.

地球年代学者は変成岩の年代を特定するために、ルビジウム87／ストロンチウム87比に基づく年代測定法を適用した。

意味（1）

(attributive) Designating a method of geological dating based on the relative amounts in rock of rubidium-87 and its beta-decay product, strontium-87.

Isotopic dating of meteorites using the rubidium-strontium system and others indicates that the most primitive rocks in the solar system are 4.56 billion years old, determined rather precisely.