
The Keuper is a lithostratigraphic unit (a sequence of rock strata) in the subsurface of large parts of west and central Europe.{sfn|Howe|1911|p=766} The Keuper consists of dolostone, shales or claystones and evaporites that were deposited during the Middle and Late Triassic epochs (about {ma|220}). The Keuper lies on top of the Muschelkalk and un...
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http://en.wikipedia.org/wiki/Keuper

• (n.) The upper division of the European Triassic. See Chart of Geology.
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http://thinkexist.com/dictionary/meaning/keuper/

(from the article `geochronology`) ...and distribution. Based on his earlier work, Friedrich August von Alberti identified in 1834 these three distinct lithostratigraphic units, the ... ...in central Germany that lay above Permian rocks and below Jurassic rocks. (The name Trias referred to the division of these strata into three ... ...
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http://www.britannica.com/eb/a-z/k/24

Clay and slate soil.
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http://www.edenwines.co.uk/Glossary_k.html
Keu'per (koi'pẽr)
noun [ G.]
(Geol.) The upper division of the European Triassic. See
Chart of
Geology .
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http://www.encyclo.co.uk/webster/K/7

See under soil type. Floor type Next to climate and grape variety, one of the most important factors influencing the quality of wine. The different soil types have developed over millions of years through physical and chemical weathering of rocks and through humification of organic matter. During physical weathering, natural forces such as win...
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https://glossary.wein.plus/keuper
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