File:Ur-Brenz-Tal Schwaebische-Alb.jpg

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Deutsch: Tal der Brenz, mit heute kleinem Brenz-Bach. Das hier am Aufhausener Knie 600m breite Tal wurde bis ins Mittlere Pleistozän noch von verzopften Flüssen, einer so genannten Urbrenz genutzt, die, zusammen mit ihren Einzugsgebieten, sogar Teile des Hohenlohischen zur Donau entwässerte. Der Bach (links der Autostraße B19) und der Talteil dahinter wurde 2004 zum gesetzlich geschützten Naturschutzgebiet Brünneleswiesen deklariert, der gesamte sichtbare Teil steht unter Landschaftsschutz. Im Tal liegen inzwischen ca. 40m von einer wasserreicheren Brenz abgelagerte Auesedimente. Die Brenz (einschließlich ihrer Vorläufer) ist einer der ältesten Flüsse Süddeutschlands (durch 20 Millionen Jahre alte „Ochsenberg-Schotter“ oberhalb Königsbronn belegt). Die heutige Europäische Hauptwasserscheide (Quellen zum Rhein und zur Donau liegen nur 4,1km auseinander) entstand, als die Erosionskraft der Urbrenz geringer geworden war als Hebungen der Schwäbischen Alb. Hinten ist der Quellort Königsbronn der heutigen Brenz sichtbar.

English: Valley of river Brenz. Todays upper Brenz (hidden beyond the road) is a poor danubian rivulet. Rivulet and valley beyond it are a strictly protected nature reserve, the visible part of the valley is a protected landscape (Landschaftschutz). The 600m wide valley, ca. 3,5km south of its karst springs (town Königsbronn in the back) cannot be eroded by its contemporary poor rivulet. River Brenz is one of the oldest rivers of Southwest Germany. This is backed by 20 Million years old ”Ochsenberg Schotter”, (river gravel) in a village high above the valley. The catchment area of a pleistocene Brenz reached far beyond the northern border of the Swabian Alb. The main water devide, now dividing the springs of river Kocher (to the N, river Neckar) and those of river Brenz (to the S, river Danube), occured when the power of water erosion turned to be less than the uplift of the Swabian Alb.
Date March 4th, 2015 (upload)
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Author Ustill

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current19:23, 4 March 2015Thumbnail for version as of 19:23, 4 March 20151,800 × 754 (1.15 MB)Ustill (talk | contribs)User created page with UploadWizard

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