Slate
German translation: Tonschiefer
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| 12:52 Sep 23, 2021 |
| English to German translations [PRO] Science - Mining & Minerals / Gems / Unterscheidung von Schieferarten | |||||||
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|  Selected response from: Johannes Gleim Local time: 19:23 | ||||||
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| Summary of answers provided | ||||
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| 3 +1 | Schiefer |
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| 4 | Tonschiefer |
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Answers
3 hrs confidence: 
peer agreement (net): +1
peer agreement (net): +1| slate Schiefer Explanation: The metamorphic sequence is: shale>slate>schist “To become schist, a shale must be metamorphosed in steps through slate and then through phyllite. If the schist is metamorphosed further, it might become a granular rock known as gneiss.” https://geology.com/rocks/schist.shtml http://csmgeo.csm.jmu.edu/geollab/fichter/metarx/barmetachan... Schiefer>Tonschiefer>Kristalline Schiefer https://dewiki.de/Lexikon/Schiefer |
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7 hrs confidence:
| slate Tonschiefer Explanation: slate, shale und schist Please see Wikipedia: 1) Slate = Tonschiefer Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional metamorphism. It is the finest grained foliated metamorphic rock.[ https://en.wikipedia.org/wiki/Slate Tonschiefer (engl. slate) sind Gesteine aus dem Übergangsbereich von der Diagenese zur Metamorphose. Es sind dichte, feinklastische Gesteine mit schwarzer, schwärzlich grauer, bläulich grauer, auch grünlicher, gelblicher, roter und violetter Farbe mit einer engständigen Schieferung, durch die das Gestein im Millimeterbereich spaltbar ist. https://de.wikipedia.org/wiki/Schiefer#Tonschiefer 2) Shale = Tonstein (undeformierte "Schiefer") Shale is a fine-grained, clastic sedimentary rock, formed from mud that is a mix of flakes of clay minerals and tiny fragments (silt-sized particles) of other minerals, especially quartz and calcite.[1] Shale is characterized by its tendency to split into thin layers (laminae) less than one centimeter in thickness. https://en.wikipedia.org/wiki/Shale Tektonisch unbeanspruchte, sehr feinkörnige Sedimentgesteine (englisch shale) mit hohen Anteilen an Tonmineralen erhielten bis weit ins 20. Jahrhundert die Bezeichnung „Schiefer“, wenn sie in dünne Platten aufspalten. Petrographisch korrekt werden sie heute, je nach genauer Zusammensetzung als Tonstein, Siltstein oder Mergel bezeichnet. https://de.wikipedia.org/wiki/Schiefer#Tonschiefer 3) Schist = Kristalline Schiefer Schist (/ʃɪst/ shist) is a medium-grained metamorphic rock showing pronounced schistosity. This means that the rock is composed of mineral grains easily seen with a low-power hand lens, oriented in such a way that the rock is easily split into thin flakes or plates. This texture reflects a high content of platy minerals, such as micas, talc, chlorite, or graphite. These are often interleaved with more granular minerals, such as feldspar or quartz. https://en.wikipedia.org/wiki/Schist Kristalline Schiefer Geologisch sind diese Schiefer (engl. schist) metamorphe Gesteine (z. B. Grünschiefer, Glimmerschiefer, Glaukophanschiefer), bei denen sich unter relativ hohen Temperaturen und vor allem hohem Druck aus Tonmineralen neue Schichtsilikate wie Muskovit, Biotit und Chlorit gebildet haben. Die Mineral„körner“ wuchsen dabei in der senkrecht zum wirkenden Druck orientierten Ebene. https://de.wikipedia.org/wiki/Schiefer#Tonschiefer |
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