File:Laengsschnitt-Schichtstufen Kocher miozaene+pleistozaene-Urbrenz.jpg
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Deutsch: Längsschnitt durch die der östlichen Schwäbischen Alb im N vorgelagerten Schichtstufen der Südwestdeutschen Schichtstufenlandschaft (Schwäbisch-Fränkische Waldberge, fluviatile Pforte der Schwäbischen Alb bei Aalen). Der Kampf zwischen Rhein und Donau um die großräumige Entwässerung ist hier deutlich. Das nach wie vor relativ flache Relief der Landschaft wurde nur vom rheinischen Kocher und seinen Tributaren tief zertalt. Dass die Brenz ein sehr alter Fluss ist, belegen ca. 20Ma alte fluviatile Ablagerungen von quarzitischen Sanden und Geröllen, überwiegend aus der Stubensandsteinschicht, die hoch auf dem Weißjura der Schwäbischen Alb gefunden wurden („Ochsenberg-Schotter“). Die Zubringer der danubischen Urbrenz waren vom Paläogen bis zur rheinischen Anzapfung im Mittel-Pleistozän ein mit sehr geringem Gefälle fließendes Zopfstrom-Flusssystem. Verändert nach Wagner, G. 1955, Reiff&Simon 1990. English: Schematic cross section of the dipping geolocical strata of the northeastern forefront of the Swabian Alb, including the river gate into the Swabian Alb at Aalen. The Neckar triburaries Kocher and Jagst captured the danubian anastomosing river system (braided rivers with very gentle gradient) of Miocene and Pleistocene age in middle Pleistocene. The graben of the Upper Rhine valley and the headward erosion of rivers Rhine, Neckar and their tributaries changed the drainage system of the Danube system drastically – in favour of the rhenish system. The existence of a danubian river system of pleistocene age is verified mainly by the Goldshöfer Sande. Its Paleogene age is verified by sedimental rests found on the Upper Jurasic of the Swabian Alb ("Ochsenberg-Schotter"). |
| Date | March, 4th, 2015 (upload) |
| Source | see author |
| Author | Ustill |
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| current | 19:29, 4 March 2015 | | 1,800 × 507 (459 KB) | Ustill (talk | contribs) | User created page with UploadWizard |
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