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(Article of periodic en Anglais - 2009)

Document title

Erosional unloading, hillslope geometry, and the height of the Cascade Range, Washington State, USA

Authors(s) and Affiliation(s)

MITCHELL S. (1) ; MONTGOMERY D. (2) ; GREENBERG H. (2) ;
(1) Biology Dep., College Holly Cross, Worcester, ETATS-UNIS
(2) Earth and Space Sciences, Univ. Washington, Seattle, ETATS-UNIS

Abstract

The AA. determine the maximum extent to which differences in isostatic compensation from relief creation contribute to the south-to-north increase in peak altitudes in the Cascade Range of Washington State. The influences of differential valley excavation and variations in hillslope length and average slope on these altitudinal trends were tested using a 3-dimensional model for isostatic rock uplift and calculations of hillslope length and slope respectively. The magnitude of isostatic peak uplift calculated by the model is highly dependent on the flexural rigidity and the related effective elastic thickness of the crust of this region. The results show the impact of tectonic, geologic, or geophysical factors rather than surficial and geomorphic effects like isostatic response to valley incision and hillslope geometry

Source

Article of periodic

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

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

Millesime : 2009, vol. 34, no8 [pp. 1108-1120]

Bibliographic references : 1 p.

Collation : 11 fig., 3 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.1801

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