This message is to call your attention to Topical Session T70 at the
Geological Society of America Annual Meeting in Denver, November 7-10, 2004:
" Modeling grain-scale processes in metamorphic rocks"
Conveners:
Tom Foster <mailto:[log in to unmask]>[log in to unmask]
Bill
Carlson <mailto:[log in to unmask]>[log in to unmask]
Our intent is to try to bring together a broad spectrum of researchers from
both the metamorphic and structure communities so that the session presents
a good overview of the current frontiers of research in modeling grain
scale processes. We are also hoping that this will promote more
interaction between investigators focusing on deformation mechanisms and
reaction mechanisms. We encourage you to submit an abstract for either an
oral or a poster presentation in this session!
The abstract submission deadline is July 13th
Information on the submission process is available on the GSA webpage:
<http://www.geosociety.org/meetings/>http://www.geosociety.org/meetings/
Additional details about the session are provided below. Please feel free
to contact us if you have questions about the session. We are looking
forward to a lot of lively, cross-disciplinary discussion!
SESSION DESCRIPTION
Title: Modeling grain-scale processes in metamorphic rocks (T70)
Session Type: Oral|Poster(2 sessions)
Scientific Categories: Petrology, Metamorphic, Structural Geology,
Mineralogy/Crystallography
Sponsors: Mineralogical Society of America; GSA Structure and Tectonics
Division
Rationale: The session is an outgrowth of the highly successful Pardee
Symposium on "Modeling Metamorphism" held at the 2003 GSA annual meeting.
It is intended to focus in greater depth on advances made over the past
decade in our understanding of processes in metamorphic rocks that operate
at the scale of hand-specimen-size aggregates of grains. These processes
are important because they are responsible for many of the features that
are commonly used to deduce the
pressure-temperature-metasomatic-deformation (P-T-X-d) history of a rock.
The strides that have been made in this area have resulted from (1) better
theoretical understanding of how minerals behave in polycrystalline
materials when they are subjected to changes in their thermal, chemical and
deformational regimes; (2) novel analytical approaches such as X-ray
tomography and microprobe X-ray mapping that provide measurements of the
spatial distribution and compositional variation of minerals to constrain
numerical simulations; and (3) increasingly sophisticated computer models
of fundamental grain-scale processes.
A one-half day oral topical technical session, with accompanying poster
session, will be devoted to this emerging field of research. Its objective
is to bring together modelers specializing in different aspects of the
subject to provide a comprehensive overview of the current frontiers of
research in this field. In particular, we wish to attract speakers who are
approaching the problem from both metamorphic (P-T-t) and deformational
viewpoints, because until now there has been relatively little interaction
between these groups. We want to have about ~40% of the talks be related to
kinetics of mineral reactions in response to P-T-t history, ~40% be related
to kinetics of deformation mechanisms and ~20% be related to analytical
techniques that allow the proposed kinetic mechanisms to be evaluated. The
goal is to provide the petrologic and microstructural communities with a
better understanding of the models and approaches that have been recently
developed, so these tools can be widely and efficiently used to increase
the variety and quality of P-T-X-d information extracted from metamorphic
rocks.
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C. T. Foster, Professor
Department. of Geoscience
University of Iowa
Iowa City, IA 52242 USA
Phone: 319-335-1801 Fax: 319-335-1821
Secretary: 319-335-1818
Email: [log in to unmask]
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