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(Article of periodic en Anglais - 2004)

Document title

Variations in soil dispersivity across a gully head displaying shallow sub-surface pipes, and the role of shallow pipes in rill initiation

published at : Soil surface characteristics : dynamics and impact on soil erosion. Special issue

Authors(s) and Affiliation(s)

FAULKNER H. ; ALEXANDER R. ; TEEUW R. ; ZUKOWSKYJ P. ;

Abstract

A small bifurcating gully head displaying shallow pipe development was surveyed to explore how far three-dimensional patterns of geochemistry and sediment size can be related to hydraulic gradients in the local marl bedrock (Almeria, SE Spain). It is concluded that calcium replaces sodium in the crust during leaching, leaving a calcic crust, and a sub-crust that is sodic and prone to subsequent pipe enlargement. Rill morphology in these materials also suggests that rills develop from these pipes when pipe roofs collapse

Source

Thematical fascicle

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

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

Millesime : 2004, vol. 29, no 9 [pp. 1143-1160]

Bibliographic references : 35 ref.

Language

Anglais

Localisation

Laboratoire INTERGEO - Paris

INIST-CNRS, Cote INIST : 17355

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2005.
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