Micromorphology and composition of silica accumulations in a hardpan

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The morphology and composition of silica coatings and silica impregnations in a hardpan underlying a desert loam from north-western New South Wales were examined. Optical properties and electron microprobe analyses indicate that these features were composed of opal-A. The coatings were remarkably pure, being 99.1% SiO2. X-ray maps indicate that the silica impregnations were also calcite depletion pedofeatures. Even at high magnifications in scanning electronmicroscopy, the silica coatings had a dense, vitreous appearance with few voids. The original plant cell structure in silicified root remnants was remarkably well preserved. 

Original languageEnglish
Pages (from-to)845-853
Number of pages9
JournalDevelopments in Soil Science
Volume22
DOIs
Publication statusPublished - 1993
Externally publishedYes

Fingerprint

micromorphology
silica
coating
opal
loam
electron probe analysis
optical property
void
calcite
desert

Cite this

@article{6c6850cab28949d99b0b83bbc7ab51b0,
title = "Micromorphology and composition of silica accumulations in a hardpan",
abstract = "The morphology and composition of silica coatings and silica impregnations in a hardpan underlying a desert loam from north-western New South Wales were examined. Optical properties and electron microprobe analyses indicate that these features were composed of opal-A. The coatings were remarkably pure, being 99.1{\%} SiO2. X-ray maps indicate that the silica impregnations were also calcite depletion pedofeatures. Even at high magnifications in scanning electronmicroscopy, the silica coatings had a dense, vitreous appearance with few voids. The original plant cell structure in silicified root remnants was remarkably well preserved. ",
author = "Sullivan, {L. A.}",
year = "1993",
doi = "10.1016/S0166-2481(08)70468-9",
language = "English",
volume = "22",
pages = "845--853",
journal = "Developments in Soil Science",
issn = "0166-0918",

}

Micromorphology and composition of silica accumulations in a hardpan. / Sullivan, L. A.

In: Developments in Soil Science, Vol. 22, 1993, p. 845-853.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Micromorphology and composition of silica accumulations in a hardpan

AU - Sullivan, L. A.

PY - 1993

Y1 - 1993

N2 - The morphology and composition of silica coatings and silica impregnations in a hardpan underlying a desert loam from north-western New South Wales were examined. Optical properties and electron microprobe analyses indicate that these features were composed of opal-A. The coatings were remarkably pure, being 99.1% SiO2. X-ray maps indicate that the silica impregnations were also calcite depletion pedofeatures. Even at high magnifications in scanning electronmicroscopy, the silica coatings had a dense, vitreous appearance with few voids. The original plant cell structure in silicified root remnants was remarkably well preserved. 

AB - The morphology and composition of silica coatings and silica impregnations in a hardpan underlying a desert loam from north-western New South Wales were examined. Optical properties and electron microprobe analyses indicate that these features were composed of opal-A. The coatings were remarkably pure, being 99.1% SiO2. X-ray maps indicate that the silica impregnations were also calcite depletion pedofeatures. Even at high magnifications in scanning electronmicroscopy, the silica coatings had a dense, vitreous appearance with few voids. The original plant cell structure in silicified root remnants was remarkably well preserved. 

UR - http://www.scopus.com/inward/record.url?scp=0028608620&partnerID=8YFLogxK

U2 - 10.1016/S0166-2481(08)70468-9

DO - 10.1016/S0166-2481(08)70468-9

M3 - Article

VL - 22

SP - 845

EP - 853

JO - Developments in Soil Science

JF - Developments in Soil Science

SN - 0166-0918

ER -