Particle size analyses of Late Quaternary allophane-dominated andesitic deposits from New Zealand

Show simple item record Alloway, Brent en Neall, VE en Vucetich, CG en 2017-08-10T00:59:40Z en 1992 en
dc.identifier.citation Quaternary International, 13-14:167-174 1992 en
dc.identifier.issn 1040-6182 en
dc.identifier.uri en
dc.description.abstract On the western North Island, New Zealand, a Late Quaternary sequence of allophane-dominated cover-bed (Andisol) deposits have accumulated from intermittent accretion and rapid, subsequent weathering of aerially transported detritus of dominantly andesitic provenance. Particle size analyses of Andisol samples were attempted for textural classification and provenance studies. The hydrometer and sedigraph techniques were unsuccessful due to difficulties arising from the flocculation of short-range order clay and organic constituents (SROCO), which prevented complete particle dispersion. Neither acidic (HCl) nor alkaline (NH4OH or NaOH) solutions were effective in completely dispersing samples, so an alternative chemical procedure was devised. This alternative pretreatment involves the selective dissolution of Andisol SROCO constituents by 0.2 mol acid-oxalate reagent (pH 3.0–3.5), and has considerable potential in the determination of particle size, soil textural classification and provenance of allophane-dominated andesitic deposits. en
dc.language English en
dc.publisher Elsevier en
dc.relation.ispartofseries Quaternary International en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from en
dc.rights.uri en
dc.title Particle size analyses of Late Quaternary allophane-dominated andesitic deposits from New Zealand en
dc.type Journal Article en
dc.identifier.doi 10.1016/1040-6182(92)90024-V en
pubs.begin-page 167 en
pubs.volume 13-14 en
dc.rights.holder Copyright: Elsevier en en
pubs.end-page 174 en
pubs.publication-status Published en
dc.rights.accessrights en
pubs.subtype Article en
pubs.elements-id 629128 en
dc.identifier.eissn 1873-4553 en
pubs.record-created-at-source-date 2017-08-10 en

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