• Loess
  • Loess is a deposit of wind-blown silt and dust of Pleistocene age that covers large areas of the continents. It is predominently calcerous consisting of quartz feldspars and micas. Loess is extensive in the North American Great Plains, south-central Europe, Ukraine, central Asia, China, and Argentina. Loess deposits in North America are related to large outwashes from the Laurentide ice sheet and floodplains of large rivers. Loess deposits in Europe are related to the former Alpine and Scandinavianice sheets. Loess in China and central Asia are related to desert conditions.
Abstract from DBPedia
    Loess (pronunciation: /ˈloʊ.əs/, /ˈlʌs/, /ˈlɛs/, or UK /ˈlɜːrs/; from German Löss [lœs]) is a clastic, predominantly silt-sized sediment that is formed by the accumulation of wind-blown dust. It covers about 10% of the Earth's surface. Loess is an aeolian sediment formed by the accumulation of wind-blown silt, typically in the 20–50 micrometer size range, twenty percent or less clay and the balance equal parts sand and silt that are loosely cemented by calcium carbonate. It is usually homogeneous and highly porous and is traversed by vertical capillaries that permit the sediment to fracture and form vertical bluffs. The word loess, with connotations of origin by wind-deposited accumulation, came into English from German Löss ([lœs]), which can be traced back to Swiss German and is cognate with the English word loose and the German word los. It was first applied to Rhine River valley loess about 1821.

    黄土とは、黄色みの強い土のことである。専門用語としては2つの用法がある。 1. * 「きづち」「きつち」と読んで、和建築、左官、日本美術などで用いる、黄味を帯びた土の一種。 2. * ドイツ語: Löss、英語: loess の訳語。「おうど」または「こうど」と読む。

    (Source: http://dbpedia.org/resource/Loess)

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