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Tree-ring reconstruction of debris-flow events leading to overbank sedimentation on the Illgraben cone (Valais alps, Switzerland)

Stoffel, Markus ; Bollschweiler, Michelle ; Leutwiler, Astrid ; Aeby, Patrick

In: The Open Geology Journal, 2007, vol. 2, p. 18-29

Dendrogeomorphological analyses of trees affected by debris flows have regularly been used to date past events. However, while previous studies in the Swiss Alps have focused primarily on granitic and gneissic debris-flow material and on Larix decidua Mill. and Picea abies (L.) Karst. trees, they have – at the same time – widely disregarded torrents dominated by finely fractured calcareous...