Rock avalanches on a glacier and morainic complex in Haut Val Ferret (Mont Blanc Massif, Italy)

Philip Deline; Martin P. Kirkbride

doi:10.1016/j.geomorph.2007.10.020

Rock avalanches on a glacier and morainic complex in Haut Val Ferret (Mont Blanc Massif, Italy)

Philip Deline, Martin P. Kirkbride

Research output: Contribution to journal › Article › peer-review

55 Citations (Scopus)

Abstract

Deposits in upper Val Ferret (Mont Blanc Massif, Italy) have been attributed to glacier advances and to a rock avalanche of 12 September AD 1717. We review evidence for the timing and mode of emplacement of the deposit, and present a new geomorphic interpretation and relative and absolute dating to show that the AD 1717 deposit is less extensive than previously thought. The landslide was deflected along one side of the valley floor, preserving older slope and morainic sediments along the other side. An earlier rock avalanche onto the Triolet Glacier occurred before AD 1000. The deposits of these landslides partly cover older moraine several kilometres downstream from the present glacier front, and have affected the glacier regimen and construction of its moraines. This study highlights the geomorphic impact of rock avalanches in glacierized high mountains.

Original language	English
Pages (from-to)	80-92
Number of pages	13
Journal	Geomorphology
Volume	103
Issue number	1
DOIs	https://doi.org/10.1016/j.geomorph.2007.10.020
Publication status	Published - Jan 2009

Keywords

Mont Blanc Massif
Rock avalanches
Supraglacial debris
Dating methods
Little Ice Age

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10.1016/j.geomorph.2007.10.020

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abstract = "Deposits in upper Val Ferret (Mont Blanc Massif, Italy) have been attributed to glacier advances and to a rock avalanche of 12 September AD 1717. We review evidence for the timing and mode of emplacement of the deposit, and present a new geomorphic interpretation and relative and absolute dating to show that the AD 1717 deposit is less extensive than previously thought. The landslide was deflected along one side of the valley floor, preserving older slope and morainic sediments along the other side. An earlier rock avalanche onto the Triolet Glacier occurred before AD 1000. The deposits of these landslides partly cover older moraine several kilometres downstream from the present glacier front, and have affected the glacier regimen and construction of its moraines. This study highlights the geomorphic impact of rock avalanches in glacierized high mountains.",

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AU - Deline, Philip

AU - Kirkbride, Martin P.

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AB - Deposits in upper Val Ferret (Mont Blanc Massif, Italy) have been attributed to glacier advances and to a rock avalanche of 12 September AD 1717. We review evidence for the timing and mode of emplacement of the deposit, and present a new geomorphic interpretation and relative and absolute dating to show that the AD 1717 deposit is less extensive than previously thought. The landslide was deflected along one side of the valley floor, preserving older slope and morainic sediments along the other side. An earlier rock avalanche onto the Triolet Glacier occurred before AD 1000. The deposits of these landslides partly cover older moraine several kilometres downstream from the present glacier front, and have affected the glacier regimen and construction of its moraines. This study highlights the geomorphic impact of rock avalanches in glacierized high mountains.

KW - Mont Blanc Massif

KW - Rock avalanches

KW - Supraglacial debris

KW - Dating methods

KW - Little Ice Age

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DO - 10.1016/j.geomorph.2007.10.020

M3 - Article

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VL - 103

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JO - Geomorphology

JF - Geomorphology

IS - 1

ER -

Rock avalanches on a glacier and morainic complex in Haut Val Ferret (Mont Blanc Massif, Italy)

Abstract

Keywords

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