File:Érosion aux îles-de-la-Madeleine, l'anse-aux-herbes, Québec, Canada.jpg

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Captions

Cliff erosion at Anse-aux-herbes on the Magdalen Islands, Quebec/Canada

Summary

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Description
Deutsch: Bodenerosion an der bis zu 30 Meter hohen Steilküste der Îles de la Madeleine, die an mehreren Uferabschnitten vorkommt und gänzlich aus Quartzsedimentgestein besteht, das mit rotem Eisenoxyd gemischt ist. Dieser Sandstein ist sehr weich und wird von der Wind- und Wellentätigkeit des Atlantiks jedes Jahr im Durchschnitt um 80 Zentimetern abgetragen und fortgespült. Dafür hebt sich im Verlauf eines Jahrhunderts die gesamte 202 km² grosse Inselgruppe um 35 Zentimeter aus dem Meer empor. Es gibt Uferbereiche, wo die Strasse wegen Absturzgefahr bereits gesperrt werden musste. Seit 2004 verbietet die Regionalverwaltung der Îles de la Madeleine jede Bautätigkeit auf weniger als 30 Metern des Uferbereiches!
Date
Source Own work
Author Marc-Lautenbacher

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