File:Ermstal Kalktuff Schwaebische-Alb.jpg
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Deutsch: Oberes Tal der Erms. Der Standort auf der Burgruine Hohenwittlingen ist etwa in der Mitte zwischen Seeburg und Bad Urach, Mittlere Schwäbische Alb. Mehrere Eigenschaften dieses Talabschnitts sind für die Geologie der nördlichen Schwäbischen Alb charakteristisch: Die gesamte Umgebung ist bewaldet. Hier, wie häufig auf der nördlichen Alb, sind an den oberen Rändern beider Seiten blanke Felskuppen stehen geblieben. Das sind nicht gebankte Massenkalke des Mittleren und Oberen Weißjura - biogene, ausgehärtete Kalksteine, die der Wassererosion länger widerstehen. Die Erms mäandert heute als Bach. Eine früher weit größere Erms hat im Tal Kalktuff- und Auen-Sedimente aufgeschichtet. Die quer stehenden Baumreihen im Tal in der Bildmitte und ganz hinten indizieren zwei von acht Abrissstufen von Kalktuff-Sedimenten. English: Upper valley of the Erms, seen from the Ruin “Burg Hohenwittlingen”, in the middle between “Seeburg” and Bad Urach, Swabian Alb.The photo shows several properties, typical for the geology of the northern Swabian Alb: The landscape is totally wooded. There are blanc rocks on either ridge of the valley. These are massive biogene limestones of Upper and Middle White Jurassic, which are not divided as bedding plains (see also mud mounds). Diagenetic sediments of harder limestone better resist water erosion. The Erms meanders today as a brook, while a prehistorical, much larger waterway, sedimented travertine and soils of floodplains. Trees, lateral to the valley, indicate two drops of the travertine sediment by 2-5- m. |
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| Source | Own work |
| Author | Ustill |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 16:11, 4 February 2017 | | 1,800 × 1,200 (2.29 MB) | Ustill (talk | contribs) | User created page with UploadWizard |
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