apologies for multiple postings
Deadline for on-line abstract submission is January 15, 2005
As the Jan 15 deadline for abstract submissions approaches, we would
like to remind you of a session currently being planned for the 2005
15th Annual Goldschmidt Meeting, May 20 - 25 in Moscow Idaho.
SS-39: Interaction along mineral grain boundaries: Diffusion, mass
transfer, and the role of fluids
The boundary between two adjoining mineral grains in a rock can
show a variety of interactions ranging from no apparent interaction,
either physical or chemical; to element diffusion profiles, in either
or both mineral grain rims, perpendicular to the grain boundary; to a
wide variety of reaction rims ranging from simple mono-mineralic rims
to intricate and highly evolved symplectitic intergrowths. The presence
of such an interaction or lack thereof is a function of the P-T
conditions; the chemistry of the adjoining mineral grains; and the
presence or absence of fluids and/or melts along the boundary
separating the two mineral grains.
The first goal of this symposium would be to bring together
mineralogists, petrologists, geochemists, geophysicists, and
experimental petrologist/mineralogists in order to first describe and
then interpret various examples of interactions between minerals along
their common grain boundaries. A second goal would be to seek some
common understanding as to the physics and chemistry of how such
interactions occur and under what P-T conditions; how the creation or
consumption of space affects the reaction between two adjoining mineral
grains; how fluids may aid or hinder mineral grain boundary
interactions; and what implications mineral grain boundary interactions
may have on the rock fabric as a whole with respect to its
permeability, response to deformation, and various geophysical effects
such as conductivity.
A full list as well as description of all 81 symposia can be found at
the following web address:
http://www.the-conference.com/2005/gold2005/abstracts.php
Information on the submission process is available at:
http://www.the-conference.com/2005/gold2005/index.php?_=
Key note speakers include:
Jane Selverstone (Univ of New Mexico, USA)
Ian Parsons (Univ of Edinburgh, UK).
Invited speakers include:
Brian Evans (MIT, USA)
Ethan Baxter (Boston Univ, USA)
Andreas Luttge (Rice Univ, USA)
Marian Holness (Univ of Cambridge, USA)
Jay Ague (Yale Univ, USA)
Tom Foster (Univ of Iowa, USA)
Reid Cooper (Brown Univ, USA).
Based on these people we think the symposium is already shaping up to
be quite an exciting one. We hope to see you there.
Dan and Bruce
PS. A complimentary symposium to this one is SS-18 Diffusion-reaction
systems in the earth sciences: new characterization and modeling
approaches sponsored by Carl Steefel, Sumit Chakraborty, and Phillipe
Van Cappellen (see abstract below). Both sessions will scheduled such
that they don't overlap thereby allowing interested people to attend
both.
Daniel E. Harlov
GeoForschungsZentrum
Section 4.1 Experimental Geochemistry and Mineral Physics
Telegrafenberg
D-14473 Potsdam tel 0 (331) 288-1456
FR Germany fax 0 (331) 288-1402
intl. tel +49
(331) 288-1456
email: [log in to unmask] intl. fax +49 (331) 288-1402
Bruce Watson
Department of Earth & Environmental Sciences
Room 1W19 Science Center
Rensselaer Polytechnic Institute
Troy, NY 12180-3590
ph: (518) 276 8838
fax: (518) 276 2012
http://www.rpi.edu/~watsoe
SS-18: Diffusion-reaction systems in the earth sciences: new
characterization and modeling approaches
Intergranular diffusion-reaction systems are extremely important in
influencing and even controlling elemental and nutrient fluxes and
water-rock interaction in a large range of geologic settings. Such
seemingly diverse processes as microbially-mediated biogeochemical
reaction networks in marine sediments, contaminant transport in
aquifers, chemical weathering, and water-rock interaction processes in
deep crystalline rocks all can be described partly or wholly as
diffusion-reaction systems. The purpose of this special session is to
explore new and innovative characterization, experimental, and modeling
approaches to unravel the dynamics of the diffusionreaction systems in
a variety of geologic environments. Special emphasis will be on
integrated studies that illuminate the fundamental, cross-cutting
aspects of diffusion-reaction systems as they are manifested in the
diverse branches of the geosciences.
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