English Dictionary

overburden

名詞

(geology) The rock and subsoil that lies above a mineral deposit such as a coal seam. / (archaeology) A sterile stratum that lies above the stratum being investigated

日本語の意味

地質学：石炭層などの鉱床を覆う岩石や土壌の層 / 考古学：調査対象の層の上に位置する、非活動性的な堆積層

Before excavation began, engineers calculated the volume of overburden that would need to be removed to reach the coal seam.

掘削が始まる前に、技師たちは石炭層に到達するために除去する必要がある鉱床の上にある岩石や覆土の体積を算出した。

意味（1）

(geology) The rock and subsoil that lies above a mineral deposit such as a coal seam.

Such rocks have been changed by baking in a terrestrial pressure-cooker. Then they have been disinterred: kilometres of overburden must have been removed.

意味（2）

(archaeology) A sterile stratum that lies above the stratum being investigated

overburdens （ plural ）