File:Kalktuff-Steinbruch Baerenthal-Baeratal Schwaebische-Alb.jpg

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Deutsch: Kalktuff-Steinbruch in Betrieb – das gibt es heute nur noch selten. Kommune Bärenthal im Tal des kleinen Flusses Bära, Schwäbische Alb (Westalb). Das feste, sehr poröse Sedimentgestein wurde in einer Warmzeit um die Wende Pleistozän/Holozän gebildet (12000-6000).
Im frisch gebrochenen, feuchten Zustand ist Kalktuff weich und daher leicht zu bearbeiten. Gelagert und ausgetrocknet wird es zum mittelharten, leichtgewichtigen Gestein, das früher ein geschätztes Baumaterial war. Kalktuffsteine sind sehr gut isolierend und sehr verwitterungsbeständig. Entgegen früher wird es heute als Baustoff kaum noch verwendet. Dagegen eignet es sich aufgrund seiner porösen Oberflächenstruktur als ausgesprochen gestaltungsmächtige Fassadenplatte (vgl. das Bild: Image:Rathaus-Hohenstein_Kalktuff_Schwaebische-Alb.jpg).

English: Old Travertine-Quarry in one-man-operation, municipality of Bärenthal in the valley of river Bära, West Swabian Alb. This porous sediment, when cropped still humid and easy to saw, runs dry and solidifies to become a fairly tough rock. Here the material developed in interglacial times of the interim of Pliocene/Holocene (12000-6000).
Travertine stones were well estimated building stones. The porous stones are of light weight, well isolating and withstanding physical or chemical weathering (except by carbon dioxide water). In modern construction architecture estimates the creativeness for facades.
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current16:57, 22 January 2017Thumbnail for version as of 16:57, 22 January 20171,200 × 1,800 (2.31 MB)Ustill (talk | contribs)User created page with UploadWizard

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