Fossil soil

Japanese: fossil soil(英語表記)fossilsoil
Fossil soil

…They can be buried under the ground surface or exposed on the surface, and are classified according to the way they appear. (1) Fossil soil Also called buried paleosol, this is paleosol that is buried under new covering layers of volcanic ash, lava flows, loess, glacial deposits, blown sand, flood sediments, landslides, and other materials, and is isolated from the natural environment on the surface. As a result, soil formation has ceased, and the soil is preserved in the strata like fossils of living organisms. However, not all buried soils are paleosols, and soil that formed in the Holocene is not paleosol.

*Some of the terminology that refers to "fossil soil" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…地表下に埋没している場合と地表に露出している場合とがあり,その出現様式によってつぎのように区別される。(1)化石土壌fossil soil 埋没古土壌ともいわれ,火山灰,溶岩流,レス,氷河堆積物,飛砂,はんらん土砂,山崩れ,地すべりなどによる新しい被覆層の下に埋没され,地表の自然環境から遮断され,したがって土壌生成作用が中断し,生物の化石のように地層中に保存された古土壌。ただし埋没土壌のすべてが古土壌とは限らず,完新世に生成した土壌が埋没された場合は古土壌ではない。…

※「fossil soil」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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