English Dictionary

stromatolite

名詞

(geology) A laminated, columnar, rock-like structure constituting a large share of all fossils from 3.5 to 0.5 billion years ago, with some still being formed at present, some or all of which result from the deposit of minerals by microorganisms such as cyanobacteria.

日本語の意味

(地質学) ラミネート状で柱状の、岩のような構造物であり、35億年前から5億年前にかけて発見された化石の大部分を占める。現在も一部が形成され続けており、この形成はシアノバクテリアなどの微生物による鉱物の沈着が関与しているとされる。

The museum's exhibit featured a well-preserved stromatolite that dated back three billion years.

博物館の展示には、微生物の鉱物沈殿によって形成された、約30億年前にさかのぼる保存状態の良い層状の柱状岩が展示されていた。

意味（1）

(geology) A laminated, columnar, rock-like structure constituting a large share of all fossils from 3.5 to 0.5 billion years ago, with some still being formed at present, some or all of which result from the deposit of minerals by microorganisms such as cyanobacteria.

Most modern and ancient stromatolites occur in carbonate sediments and sedimentary rocks, but they can form by trapping and binding of any sediment particles.

stromatolites （ plural ）