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

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

THEMES

Earth fundamentals