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The Effect of Large Melt Fraction on the Deformation Behavior of Peridotite: Implications for the Rheology of Io' MantleOne key constraint needed for refinement of the interior geochemical and geodynamic models of Io is the viscosity of the convecting partially- molten silicate mantle. To date, laboratory studies of partially molten mantle rocks have reached melt fractions up to approx.0.12, a value much smaller than thought to be appropriate for the asthenosphere of Io where the degree of partial melting may be 0.15 0.40 or higher. Therefore, we have performed a series of high temperature, triaxial compressive creep experiments on dry synthetic peridotites in a gas medium apparatus at a confining pressure of 300 MPa and temperatures from 1473 to 1573 K in order to understand the influence of large amounts of melt (0.15 < phi < 0.40) on the rheological behavior of partially molten rocks.
Document ID
20040058015
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Scott, T.
(Minnesota Univ. Minneapolis, MN, United States)
Kohlstedt, D. L.
(Minnesota Univ. Minneapolis, MN, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2004
Publication Information
Publication: Lunar and Planetary Science XXXV: Io, with a Dash of Titan
Subject Category
Geophysics
Funding Number(s)
CONTRACT_GRANT: NAG5-10509
Distribution Limits
Public
Copyright
Public Use Permitted.
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