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(Article of periodic en Anglais - 2010)

Document title

Cosmogenic nuclide-derived rates of diffusive and episodic erosion in the glacially sculpted upper Rhone Valley, Swiss Alps

Authors(s) and Affiliation(s)

NORTON K.P. (1) ; VON BLANCKENBURG F. (1) ; KUBIK P.W. (2) ;
(1) Inst. for Mineraloy, Leibniz Univ., Hannover, ALLEMAGNE
(2) Lab. for Ion Beam Physics, ETH, Zurich, SUISSE

Abstract

Morphometric data indicate 2 distinct erosion processes operate in these steep mountain valleys. The AA. determined the rates of these processes using cosmogenic beryllium-10 (10Be) in pooled soil and stream sediment samples. Denudation in deep, glacially scoured valleys is characterized by rapid, non-uniform processes, such as debris flows and rock falls. The denudation rate in each basin represents a binary mixture between the rapid, non-uniform processes, and soil creep. The AA. further show that the spatially averaged denudation rate is that of the local rock uplift value, even though a bedrock knickzone at the valley outlet hinders baselevel lowering and thereby disconnects the valley from the regional rock uplift trends

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2010, vol. 35, no6 [pp. 651-662]

Bibliographic references : 1,5 p.

Collation : 9 fig., 2 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.1961

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
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