Dear All
Please respond directly to Dr Lespinasse and not to me or the list.
Cheers
John
------- Forwarded Message Follows -------
Date: Mon, 14 Dec 1998 16:19:16 +0100 (MET)
To: [log in to unmask]
From: Marc LESPINASSE <[log in to unmask]>
Subject: Workshop on "Fluids and Fractures in the Lithosphere"
Dear Colleagues,
Please find herewith more information for the Workshop "Fluids and
Fractures in the Lithosphere" which will be held in Nancy (March 26-27,
1999). Further
details can be obtained by consulting our WEB page
(http://crpg.crpg.cnrs-nancy.fr/NEWS/FFL_99/).
(1) Scientific program:
The workshop will be organised around four sessions :
a) Porosity and seismicity :
Fluids play an important role in the evolution of newly accreted crust.
However, although induced seismicity has been observed for some time, the
exact relationships between crustal stress, fluid circulation and their
consequence on the earthquake initiation, the formation of hydrocarbon and
mineral resources are still matter of debate. Effects of thermal cracking,
seismicity induced permeability as well as moment inversion or theoretical
fracture modelling will be investigated.
b) Fluid flow and fractures in reservoirs,
Fluid flow resulting in concentrations of hydrocarbon and mineral
resources, can be either via porosity or through fractures. These
concentrations involve different flow rates and fluid compositions and flow
paths differ the deposits from the fluid may differ. This session will
evaluate examples of natural reservoirs, and examples of tectonically
induced flow..
c) Orogenesis and fluids
Theis session will emphasis the, composition, flow rate and mode of flow
in fluids associated with
orogenesis. Porosity measurements and permeability estimates are essential
to understand how the composition and physical properties fluids vary in
the crust during deformation, mountain building and basin evolution. New
techniques in fluid inclusion chemistry, microchemical methods and
relations to tectonics will be discussed.
d) Mechanics and modelling fluid flow.
In this session theoretical models of the formation of drain in geological
systems will be reviewed,
as well as the consequence the fluid flow may have in the formation and
opening of new conduits. Stress reorientation and consequences on the
orientation of the bulk veins pattern will be discussed. Permeability is a
fundamental physical parameter in geology, and this session will address
problems of quantifying fluid flow requires field descriptions and
modelling of the principal flow paths.
(2) Key note lectures
Bob Bodnar: Fluid inclusions: Evidence of past fluid circulation in the
lithosphere
Terry Engelder: Natural Hydraulic Fracturing: A Search for the Key Tractions
Gerard Massonnat (ELF EP): "Flow properties in fractured reservoirs".
Dave Sanderson: Modelling deformation, damage and fluid flow in fracture
networks and faults
Mark Zobak: The interrelationship between crustal stress, crustal fluids.
(3) The dead line for the payment of the registration has been changed to
January 31, 1999.
Dead line for Abstracts is February 15, 1999.
(4) Accommodation. A Registration form is available on our WEB site.
Payments and registration for accommodation will be made to the LORRAINE
CONGRESS site.
(5) Special issue:
We hope to take advantage of the workshop to publish a special issue of
an international journal (Tectonophysics). Manuscripts should be near
completion for the presentation and the deadline for submission will be
July 1, 1999, and will be reviewed using the usual practices of
Tectonophysics.In order to ensure this special issue, we would appreciate
indications of an intention to contribute a paper as soon as possible.
Could you please send a mail to the organising committee
([log in to unmask] or [log in to unmask]).
Please confirm your participation as soon as possible and pass on this
second circular to others who you feel may be interested in attending.
Marc LESPINASSE and Jean Louis VIGNERESSE
Organisators
**********************************
Marc LESPINASSE
Universite Henri Poincare Nancy 1
Faculte des Sciences, "Géosciences"
UMR 7566 G2R "Géologie et Gestion des
Ressources Minérales et Energétiques"
BP 239; Bd des Aiguillettes
54506 Vandoeuvre les Nancy Cedex France
tel (33) 03 83 91 25 86
Fax (33) 03 83 91 23 88
NEW MAIL: [log in to unmask]
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John Whalley
Lecturer in Structural Geology and Computer Applications in Geology
List owner - geo-tectonics
Tel +44 1705 842247 Fax +44 1705 842244
School of Earth, Environmental and Physical Science
University of Portsmouth
Portsmouth, PO1 3QL, UK Email- [log in to unmask]
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