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Monday, July 27, 2020 | History

3 edition of Acid sulfate weathering found in the catalog.

Acid sulfate weathering

Acid sulfate weathering

proceedings of a symposium

  • 85 Want to read
  • 1 Currently reading

Published by SSSA in Madison, Wis .
Written in English

    Subjects:
  • Acid sulphate soils -- Congresses.,
  • Soil acidity -- Congresses.,
  • Chemical weathering -- Congresses.,
  • Sulphates -- Congresses.

  • Edition Notes

    Includes bibliographical references.

    Statementsponsored by Divisions S-9, S-2, S-5, and S-6 of the Soil Science Society of America in Fort Collins, Colorado, 5-10 Aug. 1979 ; editorial committee, J.A. Kittrick, D.S. Fanning, L.R. Hossner ; managing editor, David M. Kral ; assistant editor, Sherri Hawkins.
    SeriesSSSA special publication ;, no. 10
    ContributionsKittrick, J. A., Fanning, D. S. 1931-, Hossner, L. R., Soil Science Society of America. Division S-9.
    Classifications
    LC ClassificationsS593.5 .A34 1982
    The Physical Object
    Paginationviii, 234 p. :
    Number of Pages234
    ID Numbers
    Open LibraryOL3513525M
    ISBN 100891187707
    LC Control Number82080099

    Acid sulfate weathering occurs when pyrite weathers at the Earth's surface resulting in the formation of large amounts of sulfuric acid. If the acidity exceeds the buffering capacity of the soil, the soil can become extremely acid. To prove this hypothesis, we collected samples from a field that had areas that were completely devoid of.   An example of chemical weathering is acid rain. Caused mostly by the burning of fossil fuels, acid rain is a form of precipitation with high levels of sulfuric acid, which can cause erosion in the materials in which it comes in contact. An example of physical weathering is wind blowing across the desert playas.

    Management of Acid Sulfate Soils. 5th International Acid. Sulfate Soil Confer ence. T weed Heads, New South W ales, Australia. Clair, T.A. and A. . INLAND ACID SULFATE SOIL SYSTEMS ACROSS AUSTRALIA. Hicks Warren and Rob Fitzpatrick. Greenhouse Emissions and Toxic Gas Emissions from Soil Organic Matter and Carbonates Associated with Acid Sulfate Soils. In. Inland Acid Sulfate Soil Systems Across Australia (Eds. Rob. Fitzpatrick and Paul Shand). pp CRC LEME Open File Report.

    Acid mine drainage (AMD) contaminates surface water bodies, groundwater, soils, and sediments at innumerable locations around the world. AMD usually originates by weathering of pyrite (FeS 2) and is rich in Fe and this study, we investigated speciation of Fe II, Fe III, and SO 4 in acid waters by Fourier transform infrared and X-ray absorption spectroscopy. Acid Sulfate Soils Conference. November 21 to 26, The 9th International Acid Sulfate Soils Conference (9th IASSC) is the premier interdisciplinary forum for the presentation of new advances and research results in the fields of acid sulfate .


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Acid sulfate weathering Download PDF EPUB FB2

About this book Acid sulfate weathering is a subject of increased interest both nationally and internationally. Acid sulfate soils, in general, result from processes that release sulfuric acid into the soil system as the soil forms.

Acid Sulfate Weathering (S S S A SPECIAL PUBLICATION) by J. Kittrick (Editor) ISBN ISBN Why is ISBN important. ISBN. This bar-code number lets you verify that you're getting exactly the right version or edition of a book.

The digit and digit formats both work. Some horizons containing jarosite have as much as meq/ g exchangeable aluminum (Al) and meq/ g nonexchangeable titratable acidity. Appreciable amounts of acidity determined in soils with a near neutral pH may reflect an earlier acid sulfate weathering by:   What are acid sulfate soils.

Acid sulfate soils form when sulfide-bearing materials are excavated from below the Earth’s surface and are exposed to the atmosphere. The sulfides (primarily pyrite) oxidize to produce sulfuric acid, iron oxides/hydroxides, and sulfate precipitates.

The resulting soil is typically highly acidic (pH less than ), and is often. Acid Sulfate Weathering (Soil Science Society of America. Sssa Special Publication, No 10) Paperback – 1 Jun. by J. Kittrick (Author) See all Author: J. Kittrick.

The Acid sulfate weathering book effect of acid sulfate weathering on the clay minerals is their extensive structural breakdown towards the surface of the profile.

This is also indicated by the high amounts of Si and Al extracted from weathered mineral residues in the surface horizons. These naturally acidic waters are similar in composition to more familiar man‐made acid mine waters or to surface waters acidified by sulfate precipitation.

Detailed study of the stream compositions has revealed the principal reactions driving the weathering process and was used to estimate the relative effects of snowpack ionic input versus. In book: Acid Sulfate Weathering, Chapter: 3, Publisher: Soil Science Society of America, Editors: Kittrick JA, Fanning DS, Hosner LR, pp [1] Acid‐sulfate weathering of basaltic materials is a candidate formation process for the sulfate‐rich outcrops and rocks at the MER rover Opportunity and Spirit landing sites.

To determine the style of acid‐sulfate weathering on Mars, we weathered basaltic materials (olivine‐rich glassy basaltic sand and plagioclase feldspar‐rich basaltic tephra) in the. Soil is the most important natural non-renewable resource developed over a longer period of time due to weathering of rocks and subsequently enrichment of organic matter.

Soil provides habitat for numerous microorganisms and serves as a natural medium for plant growth, thereby providing the plants with anchorage, nutrients and water to sustain the growth.5/5(1).

Soil micromorphology, using light microscopy and scanning electron microscopy (SEM), was used to describe detailed soil morphological and compositional changes and determine mineral weathering pathways in acid sulfate soils (ASS) from the following 2 contrasting coastal environments in Barker Inlet, South Australia: (i) a tidal mangrove forest with sulfidic material.

Mine spoil and acid sulfate soils have very low pH's due to the oxidation of pyrite. Mine spoil soils are common in surface-mined coal areas, and acid sulfate soils occur in marine flood plains in temperate and tropical areas.

Acid sulfate soils are estimated to occupy an area of at least 24 million ha worldwide (Ritsema et al., ).When they are drained and pyrite oxidation occurs. Get this from a library. Acid sulfate weathering: proceedings of a symposium. [J A Kittrick; D S Fanning; L R Hossner; Soil Science Society of America.

Division S;]. First book on regolith to include a substantial portion on the influence of biota; First book on regolith to include detailed information on soil degradation processes such as acid sulfate soils; Concise history of weathering through time in Australia; Type examples of weathering profiles for common rock types.

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): [1] The acid fog model has received considerable attention as a model of soil formation on Mars.

Previous evaluations of this model have focused on experimental weathering of terrestrial basalt samples. However, these samples differ significantly from what now is thought to be typical of Martian. Book Chapter Geochemistry of Acid Mine Waters Author(s) D. Kirk Nordstrom the formation of acid-sulfate soils, and the development of acidity and metal mobilization in natural waters.

and inactive or abandoned mines with their associated waste-rock and tailings piles continue to be exposed to weathering, large concentrations of sulfate.

In the past, inland Acid Sulfate Soils have usually been dealt with as a subsection of major works dealing with salt-affected or saline soils (e.g.

Box 1). In contrast, there is a much larger amount of published information, including several books on the topic of “coastal Acid Sulfate Soils” (e.g. Pons ; Dent ; Dent and Pons   Abstract. To investigate the role of sulfuric acid-based carbonate weathering in global CO 2 sequestration of climate changes, we systematically discussed the pathway of sulfuric acid in rock chemical weathering and its feedback mechanism for global warming.

We showed the methods used to determine the accurate amount of sulfate flux, accounting for the sulfuric acid. Acidic sulfate soils are formed from potential acidic sulfate soils that are characterized by the accumulation of pyrite (FeS 2). Upon drainage of these soils, the pyrite oxidizes to produce sulfuric acid and hence acidic sulfate soils.

The acid formed commonly decreases the soil’s pH to less than 4, and sometimes the pH becomes as acid as 2. – Acid Reactions • Water + carbon dioxide carbonic acid chloride (salt), and calcium sulfate (gypsum) are particularly vulnerable to solution weathering.

Chemical Weathering. Bowen’s Reaction Series Goldrich Stability Series Rates of weathering Weathering •Climate. acid-sulfate weathering environments.

Other candidate pro-cesses not involving acid-sulfate conditions might include the dissolution and movement of soluble components by water (e.g., groundwater, water thin films, flowing or standing water) .The goal was to characterize the acid-sulfate weathering reactions occurring at Cerro Negro and ultimately on early Mars.

Our work differs from previous work in three ways: (1) the hottest experiments were conducted at a temperature higher than most previous Mars laboratory work, (2) we separated the phases precipitated during the experiment.The β-form calcium sulfate hemihydrates, whose density is g cm −3, are formed when CaSO 4 ⋅ 2H 2 O is heated dry at round – °C.

In contrast, the α-form, whose density is g cm −3, are formed when CaSO 4 ⋅ 2H 2 O is heated hydrothermally at round °C. At °C, CaSO 4 ⋅ H 2 O loses water and becomes calcium sulfate anhydrous, III-type α-CaSO 4 .