Chapman Conference on the Geodynamics of Venus:
Evolution and Current State
September 4-6, 1997
Snowmass at Aspen, Colorado
Abstract Deadline: June 20, 1997
Conveners:
Stephen J. Mackwell,
Department of Geosciences,
Pennsylvania State University,
University Park, PA 16802,
Phone: +1-814-865-2310,
E-mail: mack@geosc.psu.edu
; Roger J. Phillips
Department of Earth and Planetary Sciences, Washington University, St. Louis, MO 63130, Phone: +1-314-935-6356, E-mail: phillips@wustite.wustl.edu
Program Committee
Adrian Lenardic, University of California, Los Angeles, e-mail: alenar@artemis.-ess.ucla.edu
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Suzanne E. Smrekar, Jet Propulsion Laboratory, e-mail: ssmrekar@cythera.jpl.nasa.gov
;
Ellen R. Stofan, Jet Propulsion Laboratory, e-mail: ellen.r.stofan@jpl.nasa.gov
Conference Scope
The Magellan mission to Venus ended over two years ago and was followed by a post mission meeting that promised much in the way of understanding the current state and geologic history of the planet. How-ever, we have failed to answer some very fundamental questions about this most Earth-like planet. Massive resurfacing of the planet would appear to have occurred in the past 500 million years that have attributed variously to catastrophic foundering of the lithosphere, gradual volcanism and tectonic overprinting. Geodynamics constraints on these various hypotheses rely on estimates of the lithospheric thickness, the heat flux from the surface and the mechanical properties of dry rock. A wide range in geodynamic variables can be applied to match the topography as well as the gravity fields and have not been sufficient to resolve various competing models.
This Chapman Conference would bring together observationalists, geodynamicists, and experimentalists to assimilate, compare, and contrast the provocative ideas that have been raised over the past two plus years.
Themes
- Cratering, Surface Ages, and Resurfacing: including a reassessment of the cratering record in light of further analysis of crater populations and distributions; recent determinations of the timing of formation of the various tectonic and volcanic features; and models for catastrophic foundering or more gradual tectonic or volcanic resurfacing.
- Lithospheric Thickness on Venus: including observational, experimental and modeling constraints on the present lithospheric thickness. Is the lithospheric thickness Earth-like, many times thicker, or something in between?
- Thermal and Tectonic History of Venus: including models for the thermal and tectonic state and evolution of Venus based on measurements of the present lithospheric thickness. What types of
thermal/tectonic evolutionary models are consistent with the end-conditions we observe today?
Travel Grant -- Application Deadline: June 20, 1997
Limited funding will be available to support some students and needy participants. Applications can be obtained from the AGU headquarters or e-mail kpak@agu.org.
Abstract Deadline: June 20, 1997
A camera-ready original and two copies of all abstracts must be submitted in standard AGU abstract format to the address below.
If you wish to submit your abstract using e-mail, contact the AGU Meetings Department.
Preregistration Deadline: August 11, 1997
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For additional information, contact:
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AGU Meetings Department
Geodynamics of Venus Conference
2000 Florida Avenue, NW
Washington, DC 20009
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Phone:
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+1-202-462-6900
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Fax:
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+1-202-328-0566
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E-mail:
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kpak@agu.org
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