Weathering Assessment of Heavy Minerals in Age Sequences of Australian Sandy Soils

Tejan-Kella, M. S.; Chittleborough, David J.; Fitzpatrick, R. W.

doi:10.2136/sssaj1991.03615995005500020023x

Cited by 17 publications

(7 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Goldich ( 1938 ) and Pettijohn ( 1941 ) investigated the durability of Zr in weathered rock and found that zircon was the most persistent mineral in a wide range of igneous, metamorphic and sedimentary rocks. Tejan-Kella et al ( 1991 ) recorded etch-pitted zircon grains only in soils that were 100,000 years old. The chemical composition of zircon mineral is used to elaborate many magmatic processes, including the interaction with hydrothermal fl uids (Thomas et al 2002 ;Hoskin 2005 ) , crystal fractionation (Pettke et al 2005 ;Lowery Claiborne et al 2006 ) , and/or magma mixing (Wang et al 2002 ;Belousova et al 2006 ) , as well as being a potential source indicator (Aja et al 1995 ;Belousova et al 2002 ;Gagnevin et al 2009 ) .…”

Section: Retention Mobility and Bioavailability Of Zr In Soilsmentioning

confidence: 99%

Behavior and Impact of Zirconium in the Soil–Plant System: Plant Uptake and Phytotoxicity

Shahid

Ferrand

Schreck

et al. 2012

Reviews of Environmental Contamination and Toxicology Volume 221

View full text Add to dashboard Cite

Zirconium (Zr) is a transition metal that has both stable and radioactive isotopes.This metal has gained significant attention as a major pollutant of concern, partly because it has been prominent in the debate concerning the growing anthropogenic pressure on the environment. Its numerous past and present uses have induced significant soil and water pollution. Zr is generally considered to have low mobility in soils. The behavior of Zr particularly depends on the characteristics of the media in which it exists, and even its presence in the biosphere as a contaminate may affect its behavior. In this chapter, we describe the relationship between the behavior of Zrand its speciation in soils, its uptake and accumulation by plants, its translocation and toxicity inside plants, and mechanisms by which plants detoxify it.Zr is abundant and occurs naturally in the earth's crust. Zr emissions to the atmosphere are increasing from anthropogenic activities such as its use in industry and nuclear reactors. Zr forms various complexes with soil components, which reduces its soil mobility and phytoavailabilty. The mobility and phytoavailabilty of Zr in soil depend on its speciation and the physicochemical properties of soil that include soil pH, texture, and organic contents. Despite having low soil mobility and phytoavailability,amounts of Zr are absorbed by plants, mainly through the root system and can thereby enter the food chain.After plant uptake, Zr mainly accumulates in root cells. Zr does not have any known essential function in plant or animal metabolism. Although little published data are available, we conclude that the phytotoxicity of Zr is generally low.Notwithstanding, Zr can significantly reduce plant growth and can affect plantenzyme activity. When exposed to Zr-induced toxicity, plants possess numerous defense mechanisms to cope with the toxicity. Such strategies include Zr sequestration in plant roots and activation of various antioxidants. Because Zr may have impact on the biosphere, we believe it deserves to be evaluated in supplementary studies that will enhance the understanding of its behavior in soil-plant systems.

show abstract

Section: Retention Mobility and Bioavailability Of Zr In Soilsmentioning

confidence: 99%

Behavior and Impact of Zirconium in the Soil–Plant System: Plant Uptake and Phytotoxicity

Shahid

Ferrand

Schreck

et al. 2012

Reviews of Environmental Contamination and Toxicology Volume 221

View full text Add to dashboard Cite

show abstract

“…Orthosilicate minerals are arranged in order of decreasing weathering rate (most rapid weathering to most durable in the weathering environment). Morton, 1984); Bateman and Catt, 1985); Tejan-Kella, Chittleborough, and Fitzpatrick, 1991); Dryden and Dryden, 1946).…”

Section: Natural Persistence Series Of Orthosilicatesmentioning

confidence: 99%

Bond strength and the relative weathering rates of simple orthosilicates

Velbel¹

1999

American Journal of Science

View full text Add to dashboard Cite

When formation of protective surface layers on garnet is taken into account, relative weathering rates of common orthosilicates decrease in the same order as the M-O bond energies for the dominant non-tetrahedral cations, giving rise to the commonly observed natural orthosilicate weathering series:The lengths and strengths of bonds between major non-tetrahedral cations and structural oxygen are a fundamental control of relative orthosilicate weathering rates in nature as in laboratory experiments.

show abstract

“…However, it does not seem well suited for evaluating the weathering of strongly weathered materials, since it does not take into account the degree of development of individual surface features. A modification of this method has been used by Tejan‐Kella et al. (1991) to assess the weathering of heavy minerals in an age sequence of Australian sandy soils.…”

Section: Introductionmentioning

confidence: 99%

Surface morphology of quartz grains from tropical soils and its significance for assessing soil weathering

Marcelino

Mussche

Stoops

1999

European J Soil Science

View full text Add to dashboard Cite

Summary The surface morphology of quartz grains can indicate the degree of weathering of soil material. We have compared two methods of assessing the relative weathering of soils on the basis of differences in the surface morphology of quartz sand grains in a catena of soils in Rwanda. One method is based on the presence or absence of surface features indicative of weathering or freshness, while the other uses the frequency and size of dissolution etch pits. A ranking of relative weathering could be obtained using the first technique for the slightly and somewhat weathered soils but not for the weathered soils. On the other hand, weathering trends and differences between the horizons studied were detected in weathered soils using the second method. The introduction of more specific definitions of the weathering classes used in the latter method leads to clear improvement of the inter‐observer reproducibility of the weathering classification. The surface features on the quartz grains suggest that the soil at the summit is less weathered than the other soils of the sequence. Quartz grains from the well‐drained soils on the slopes, which are subjected to more intense leaching and thus to stronger chemical weathering, have more triangular etch pits and chatter marks. In the imperfectly drained soils in the valley bottom quartz grains are less etched because dissolution is inhibited by the oversaturation in silica of the drainage waters.

show abstract

Weathering Assessment of Heavy Minerals in Age Sequences of Australian Sandy Soils

Cited by 17 publications

References 0 publications

Behavior and Impact of Zirconium in the Soil–Plant System: Plant Uptake and Phytotoxicity

Behavior and Impact of Zirconium in the Soil–Plant System: Plant Uptake and Phytotoxicity

Bond strength and the relative weathering rates of simple orthosilicates

Surface morphology of quartz grains from tropical soils and its significance for assessing soil weathering

Contact Info

Product

Resources

About