Weathering

Introduction and CZEN Overview (presented at 2008 Goldschmidt)

File: 
czen vancouver.ppt
czen 2008 v 92.doc

Publication Type:

Presentation

Authors:

Brantley, Susan

Source:

(2008)

Abstract:

About forty scientists from the U.S., Europe, and elsewhere convened at the Goldschmidt meeting in Vancouver, Canada, to discuss Critical Zone science. Remarks were made by S Brantley, Jun Abrajano (NSF) and Enriqueta Barrera (NSF). Discussions centered around the development of the Critical Zone Exploration Network of sites and how activities can be increased to include more sites around the world.

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Submitted by msk137 on Thu, 08/14/2008 - 09:41.
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CZO Weathering Group

Invite only group

Continent: North America

Soil Order: Multiple

Position Announcement: Pedologist -- Univ. of Georgia

Please see attached announcement for a tenure-track, Asst. Professor of Pedology position at the University of Georgia.

Applications are due in July 2008.

See http://www.cropsoil.uga.edu/dept_info/pedology.php for more details.

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Submitted by AaronT on Tue, 05/20/2008 - 10:59.
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AluSiV

Aluminium and Silicon in Soils and the Environment. 3rd-5th September, 2008, Macaulay Institute, Aberdeen

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Submitted by steveh on Thu, 12/20/2007 - 10:06.
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WUN - Weathering Science Consortium

Link: 
http://www.wun.ac.uk/wunwsc/index.html

The Worldwide Universities Network is an international alliance of research led universities. A major aim of the WUN is to pool academic resources to tackle global research challenges that are beyond the scope of the single institution or even groups within nations. Many of these challenges are of such importance that they require international teams and multiple funding sources to make serious headway The pressure on natural resources is one such issue.

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BigLink

Moderated group

Damma Glacier

PI: Stefano Bernasconi

Continent: Europe

Metal mobility in alum shale from Oland,, Swedan

File: 
Falk_etal2006.pdf

Publication Type:

Journal Article

Authors:

Falk, Helena; Lavergren, Ulf; Bergback, Bo

Source:

Journal of Geochemical Exploration, Volume 90, p.157-165 (2006)

Keywords:

Alum shale; Black shale; Heavy metals; Leaching; Weathering; Environmental geochemistry

Abstract:

A study was initiated to analyse metal flows from alum shale to the environment in an area in O¨ land, Sweden. The study was
performed by elemental analysis and leaching experiments of alum shale together with analysis of groundwater and surface water
samples.
The metal concentrations in non-weathered alum shale were much higher than in weathered or burnt shale, especially for
cadmium (Cd), nickel (Ni) and zinc (Zn), indicating a loss of metals during weathering or burning of the shale. The release of
metals through weathering was clearly demonstrated by the leaching tests. A 36-week leaching period of non-weathered shale
resulted in a drastic drop in pH and a significant increase in metal concentrations in the leachate. The metal concentrations in
groundwater were inversely related to the pH. For surface waters, the concentrations of Cd, copper (Cu), Ni and Zn were generally
increased compared to background values.
In conclusion, metals are released through weathering or burning of alum shale, as well as from heaps of weathered or burnt
shale. The release of metals is strongly related to low pH, especially for Cd, Ni and Zn.

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Submitted by apfornadel on Wed, 04/11/2007 - 11:43.
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