Dynamical coupling of deformation and melt transport in the Earth: A combined theoretical and experimental study

Lead PI: Dr. Ben Holtzman , Marc Spiegelman , Dr. Cian R. Wilson

Unit Affiliation: Seismology, Geology and Tectonophysics, Lamont-Doherty Earth Observatory (LDEO)

July 2012 - June 2016
Inactive
Global
Project Type: Research

DESCRIPTION: Torsional deformation experiments will be conducted to develop a better understanding and useful new parameterizations of the melt segregation process. The first new approach will develop fully non-linear computational models of two phase flow, to directly model the emergence of melt-rich bands. The second approach will develop useful mesoscale constitutive models for the effective behavior of melt-banded materials at a scale larger than the melt bands.

SPONSOR:

National Science Foundation (NSF)

FUNDED AMOUNT:

$235,906

WEBSITE:

https://www.nsf.gov/awardsearch/showAward?AWD_ID=1141976&HistoricalAwards=false

PUBLICATIONS:

F. Garel, D.R. Davies, S. Goes, J.H. Davies, S.C. Kramer, and C.R. Wilson. "Interaction of subducted slabs with the mantle transition-zone: a regime diagram from 2-D thermo-mechanical models with a mobile trench and an overriding plate," Geophysics, Geochemistry and Geosystems, v.15, 2014, p. 1739. doi:10.1002/2014GC005257

Spiegelman, Marc and May, Dave A and Wilson, Cian R. "On the solvability of incompressible Stokes with viscoplastic rheologies in geodynamics," Geochemistry, Geophysics, Geosystems, 2016.

KEYWORDS

veins melt bands seismology geology and tectonics rheology melting deformation stress-driven melt

THEMES

Earth fundamentals