Morphology and genesis of silt and clay coatings in the vesicular layerof a desert loam soil

L. A. Sullivan, A. J. Koppi

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

The microscopic and submicroscopic characteristics of the vesicles in a Desert Loam (Haplic Durargid) soil were examined. The surface roughness of the vesicles depended on the texture of the material in which they formed. Plate-like silt and coarse clay particles on the vesicle surface were strongly oriented having a pavement-like appearance. Silt and clay coatings lined many of the vesicles and interconnected channels. Many vesicles occurred in clusters and contained layered coatings of different thickness:claycoatings up to 200 pm, silt coatings up to 300 pm, and composite coatings up to 1 mm. Some radially cracked claycoatings also contained silt depositions within the cracks. The probable genesis of the claycoatings involves the translocation of clay particles from an external source, through the raindrop-disturbed surface layer, and around entrapped air bubbles within vesicles. The morphology of the coating' indicates that the vesicles in this soil layer have considerable durability.

Original languageEnglish
Pages (from-to)579-586
Number of pages8
JournalAustralian Journal of Soil Research
Volume29
Issue number5
DOIs
Publication statusPublished - 1991
Externally publishedYes

Fingerprint

desert soils
Silt
loam soils
vesicle
loam
silt
coatings
coating
desert
clay
Soils
Coatings
soil
Composite coatings
Pavements
surface roughness
bubbles
durability
Durability
Textures

Cite this

@article{133b6dba34fb4b9280519134b9ccbd66,
title = "Morphology and genesis of silt and clay coatings in the vesicular layerof a desert loam soil",
abstract = "The microscopic and submicroscopic characteristics of the vesicles in a Desert Loam (Haplic Durargid) soil were examined. The surface roughness of the vesicles depended on the texture of the material in which they formed. Plate-like silt and coarse clay particles on the vesicle surface were strongly oriented having a pavement-like appearance. Silt and clay coatings lined many of the vesicles and interconnected channels. Many vesicles occurred in clusters and contained layered coatings of different thickness:claycoatings up to 200 pm, silt coatings up to 300 pm, and composite coatings up to 1 mm. Some radially cracked claycoatings also contained silt depositions within the cracks. The probable genesis of the claycoatings involves the translocation of clay particles from an external source, through the raindrop-disturbed surface layer, and around entrapped air bubbles within vesicles. The morphology of the coating' indicates that the vesicles in this soil layer have considerable durability.",
keywords = "Clay coatings, Micromorphology, Scanning electronmicroscopy, Silt coatings, Translocation, Vesicles",
author = "Sullivan, {L. A.} and Koppi, {A. J.}",
year = "1991",
doi = "10.1071/SR9910579",
language = "English",
volume = "29",
pages = "579--586",
journal = "Australian Journal of Soil Research",
issn = "0004-9573",
publisher = "CSIRO",
number = "5",

}

Morphology and genesis of silt and clay coatings in the vesicular layerof a desert loam soil. / Sullivan, L. A.; Koppi, A. J.

In: Australian Journal of Soil Research, Vol. 29, No. 5, 1991, p. 579-586.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Morphology and genesis of silt and clay coatings in the vesicular layerof a desert loam soil

AU - Sullivan, L. A.

AU - Koppi, A. J.

PY - 1991

Y1 - 1991

N2 - The microscopic and submicroscopic characteristics of the vesicles in a Desert Loam (Haplic Durargid) soil were examined. The surface roughness of the vesicles depended on the texture of the material in which they formed. Plate-like silt and coarse clay particles on the vesicle surface were strongly oriented having a pavement-like appearance. Silt and clay coatings lined many of the vesicles and interconnected channels. Many vesicles occurred in clusters and contained layered coatings of different thickness:claycoatings up to 200 pm, silt coatings up to 300 pm, and composite coatings up to 1 mm. Some radially cracked claycoatings also contained silt depositions within the cracks. The probable genesis of the claycoatings involves the translocation of clay particles from an external source, through the raindrop-disturbed surface layer, and around entrapped air bubbles within vesicles. The morphology of the coating' indicates that the vesicles in this soil layer have considerable durability.

AB - The microscopic and submicroscopic characteristics of the vesicles in a Desert Loam (Haplic Durargid) soil were examined. The surface roughness of the vesicles depended on the texture of the material in which they formed. Plate-like silt and coarse clay particles on the vesicle surface were strongly oriented having a pavement-like appearance. Silt and clay coatings lined many of the vesicles and interconnected channels. Many vesicles occurred in clusters and contained layered coatings of different thickness:claycoatings up to 200 pm, silt coatings up to 300 pm, and composite coatings up to 1 mm. Some radially cracked claycoatings also contained silt depositions within the cracks. The probable genesis of the claycoatings involves the translocation of clay particles from an external source, through the raindrop-disturbed surface layer, and around entrapped air bubbles within vesicles. The morphology of the coating' indicates that the vesicles in this soil layer have considerable durability.

KW - Clay coatings

KW - Micromorphology

KW - Scanning electronmicroscopy

KW - Silt coatings

KW - Translocation

KW - Vesicles

UR - http://www.scopus.com/inward/record.url?scp=0026289862&partnerID=8YFLogxK

U2 - 10.1071/SR9910579

DO - 10.1071/SR9910579

M3 - Article

VL - 29

SP - 579

EP - 586

JO - Australian Journal of Soil Research

JF - Australian Journal of Soil Research

SN - 0004-9573

IS - 5

ER -