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AGU 2010 Session: GP08 Magnetism of Glassy Materials
From: Julie Bowles <jbowles@xxxxxxx>
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Dear Colleagues,
We
would like to draw your attention to the following session for the
next Fall AGU Meeting in San Francisco (13-17 December, 2010):
GP08 "Magnetism of Glassy Materials"
Glassy
materials often comprise some of the best paleomagnetic recorders
because of the fine-grained magnetic particles that tend to be included
in these rapidly-cooled materials. Obsidian flows and obsidian
artifacts, ash flow tuffs, submarine basaltic glass, lunar and other
impact glass, and glassy archeological slag all contain single-domain
sized magnetic minerals and have been used to infer geomagnetic
directional and intensity variations, to make tectonic and other
geologic interpretations, and to date and infer provenance of
archeological materials. Yet the interpretation of magnetization in
metastable glassy materials presents some special challenges; in
addition to understanding the timing and temperature conditions of
particle formation and magnetization (as in all paleomagnetic
recorders), the tendency of glass to relax and devitrify adds another
layer of complexity to evaluations of its magnetic stability over
geologic time scales. We invite contributions addressing the formation
and modification of magnetic minerals in glassy materials, the magnetic
properties of glassy materials, and geological, planetary, and
archaeological applications of glass magnetism.
Please note that the deadline for abstract submission is September 2nd, 2010.
We hope you will consider a submission, and look forward to seeing you in San Francisco.
Best regards,
Julie Bowles, University of Minnesota (jbowles@xxxxxxx)
Joshua Feinberg, University of Minnesota (feinberg@xxxxxxx)
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