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(Article of periodic en Anglais - 2014)

Document title

Depth and character of rock weathering across a basaltic-hosted climosequence on Hawai'i

Authors(s) and Affiliation(s)

GOODFELLOW B.W. (1 2) ; CHADWICK O.A. (3) ; HILLEY G.E. (1) ;
(1) Geological and Environmental Sciences, Univ., Stanford, ETATS-UNIS
(2) Dept. of Physical Geography and Quaternary Geology, Univ., Stockholm, SUEDE
(3) Dept. of Geography, Univ. of California, Santa Barbara, ETATS-UNIS

Abstract

Using field observations and geochemical and digital terrain analyses, the AA. describe the structure and thickness of the regolith across a climosequence on the island of Hawai'i to gain insight into the relative roles of precipitation and the near-surface hydrologic structure in determining weathering patterns. The abrupt change in regolith depth and character that coincides with the transition from net-positive to net-negative long-term water balance implies that small changes in precipitation rates around a neutral water balance result in large changes in the distribution and depth of weathering. Together the observations indicate that the distribution and depth of weathering in basalts (and probably other lithologies) might be best understood by considering how precipitation interacts with the complicated near-surface permeability structure over regolith-forming timescales to weather rock in the vadose zone

Source

Article of periodic

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

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

Millesime : 2014, vol. 39, no3 [pp. 381-398]

Bibliographic references : 1 p.

Collation : 13 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.3505

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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