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(Article of periodic en Anglais - 2010)

Document title

Influence of runout-path material on emplacement of the Round Top rock avalanche, New Zealand

Authors(s) and Affiliation(s)

DUFRESNE A. (1) ; DAVIES T.R. (1) ; MCSAVENEY M.J. (2) ;
(1) Dep. of Geological Sciences, Univ. Canterbury, Christchurch, NOUVELLE-ZELANDE
(2) GNS Science, Wellington, NOUVELLE-ZELANDE

Abstract

Here the AA. investigate the influence of runout-path material on the mobility and final morphology of the Round Top rock avalanche deposit in the Southern Alps (South Island, New Zealand). They combined field observations with subsurface geophysical investigations and laboratory analogue models to illustrate the processes of substrate deformation features. This rock avalanche of mylonitic schist ran out over a planar surface of saturated fluvial gravel. Soils and river gravels in the runout path are found bulldozed at elongate ridge termini where they formed local obstacles halting avalanche motion at these locations, thus aiding development of prominent elongate ridges on the deposit. Further travel over the disrupted substrate led to avalanche–substrate mixing at the base of the debris mass

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, no2 [pp. 190-201]

Bibliographic references : 1 p.

Collation : 13 fig., 1 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.1900

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2010
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