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(Article of periodic en Anglais - 2004)

Document title

Hornblende etching and quartz/feldspar ratios as weathering and soil development indicators in some Michigan soils

Authors(s) and Affiliation(s)

MIKESELL L.R. ; SCHAETZL R.J. ; VELBEL M.A. ;

Abstract

Weathering can be used as a highly effective relative age indicator. One such application involves etching of hornblende grains in soils. Etching increases with time (duration) and decreases with depth in soils and surficial sediments. The AA. examine here the assumption that the degree of etching varies as a function of soil development even in soils of similar age. The spodosols they studied form a climate-mediated development sequence on a 13,000-yr-old outwash plain in Michigan. The data indicate that hornblende etching should not be used as a stand-alone relative age indicator, especially in young soils and in contexts where the degree of pedogenic variability on the geomorphic surface is large

Source

Article of periodic

published at : Quaternary research / ISSN 0033-5894 / CODEN QRESAV

Editor : Elsevier, San Diego, CA - ETATS-UNIS (1970)

Millesime : 2004, vol. 62, no2 [pp. 162-171]

Bibliographic references : 53 ref.

Collation : Illustration ;

Language

Anglais

INIST-CNRS, Cote INIST : 15739

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