File:Karstwasserrinne NSG-Diessener-Tal Neckar-Tributar-Diessen.jpg

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Deutsch: Karstwasserrinne südwestlich vom Dorf Dießen (Horb am Neckar) im Dießener Tal, Obere Gäue, Baden-Württemberg. Die nasse Wiese vor dem Ortseingang sollte vor etwa 300 Jahren trocken gelegt werden. Daraus entstand die "Tuffsteinrinne" (Steinerne Rinne, hochwachsend durch ausfällenden Kalktuff). Es gibt in Bayern und Baden-Württemberg etwa 25 solche Gebilde, die meisten auf der Fränkischen Alb ( Liste_der_Steinernen_Rinnen_in_Bayern). Die fragilen Gebilde können leicht irreversibel beschädigt werden.

Wie alle Steinernen Rinnen treten die seltenen Gebilde nur bei kleinen Rinnsalen auf, deren Quellen im kalksteinhaltigen Gestein (Muschelkalk oder Weißer Jura) entspringen. Die Dießener Tuffsteinrinne befindet sich an einem sehr steilen Hang eines Seitentals zum Dießener Tal im Bereich des Mittleren Muschelkalk.

Das Flüsschen Dießener Bach fließt durch das naturgeschützte Tal („Naturschutzgebiet Dießener Tal und Seitentäler“) von Westen in den Oberen Neckar (südwestlich von Horb). Tuffablagerungen sind im Dießener Tal und seinen Seitentälern weit verbreitet und wurden nördlich von Dießen früher umfangreich abgebaut.

English: Calctuff runnel (Steinerne Rinne) southwest of the village Dießen (west of Horb am Neckar), Baden-Württemberg. When attempts were made to drain a wet meadow ca. three hundred years ago, a calctuff runnel began to develop. The legally protected, fragile runnel monument at Dießen has a length of ca. 200m. The geology of the area is mainly Muschelkalk (Triasssic).
The valley of the rivulet Dießen is the „Naturschutzgebiet Dießener Tal und Seitentäler“. Different kinds of calctuff depositions are quite frequent here. There even used to be a few quarries, which are now closed. In very tiny brooklets the calcium carbonate, solluted in karstic water, is chemically precipitated, such that limestone is continually deposited to form a growing runnel, along which the water runs. There are ca. 25 such fragile objects known in heavely karstic territory of the Swabian Alb and the Franconian Jura.
Date Sept. 25th, 2009
Source Own work
Author Ustill

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