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(Article of periodic en Anglais - 2009)

Document title

The critical role of climate and saprolite weathering in landscape evolution

Authors(s) and Affiliation(s)

DIXON J.L. (1) ; HEIMSATH A.M. (1) ; AMUNDSON R. (2) ;
(1) School of Earth and Space Exploration, Arizona State Univ., Tempe, ETATS-UNIS
(2) Dep. of Environmental Science, Policy and Management, Univ. of California, Berkeley, ETATS-UNIS

Abstract

Here, the AA. report rates of erosion and weathering in saprolite and soil to quantify how climate influences denudation, by focusing on an elevation transect in the western Sierra Nevada Mountains, California. They use an adapted mass balance approach and couple soil-production rates from the cosmogenic radionuclide (CRN) 10Be with zirconium concentrations in rock, saprolite and soil. The results quantify links between climate, weathering and erosion, and together suggest that climate controls chemical weathering via temperature and moisture control on chemical reaction rates. They also suggest that saprolite weathering reduces bedrock coherence, leading to faster rates of soil transport that, in turn, decrease material residence times in the soil column and limit soil weathering

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, no11 [pp. 1507-1521]

Bibliographic references : 1,5 p.

Collation : 9 fig., 4 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.1836

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