Collaborative Research: Advanced Models of Magma Migration at Convergent MARGINS

Lead PI: Marc Spiegelman

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

February 2009 - January 2013
Inactive
Global
Project Type: Research

DESCRIPTION: The project will develop, test, and apply flexible tools for modeling arc fluid flow and magmatism focusing on processes occurring in a critical zone of the Subduction Factory.

OUTCOMES: Found that by including both fluid transport and thermodynamically consistent fluid production the fluid pathways can be calculated throughout the wedge. The model appears to be able to be compared directly to specific observations in certain cases. Began investigating currently available parameterizations of wet melting.

SPONSOR:

National Science Foundation (NSF)

FUNDED AMOUNT:

$276,065

EXTERNAL COLLABORATORS:

University of Michigan

WEBSITE:

https://www.nsf.gov/awardsearch/showAward?AWD_ID=0841079&HistoricalAwards=false

PUBLICATIONS:

Spiegelman MW, van Keken PE and BR Hacker. "Fluid pathways in subduction zones," Eos Trans. AGU, 90(52), Fall Meet. Suppl., Abstract V13H-08, v.90(52), 2009.

P.E. van Keken, B.R. Hacker, E.M. Syracuse, and G.A. Abers. "Subduction Factory 4: Depth-dependent flux of H2O from slabs worldwide," J. Geophys. Res., B01401, 2010. doi:doi:10.1029/2010JB007922.

E.M. Syracuse, P.E. van Keken, and G.A. Abers. "The global range of subduction zone thermal models," Physics of the Earth and Planetary Interiors, v.183, 2010, p. 73.

Van Keken, PE, Spiegelman, M and Wilson, CR. "DI21B-04: Rheological control in subduction zones: slab dynamics, fluid flow and seismic anisotropy," EOS Trans AGU, 2011.

Wilson, CR, Spiegelman M, van Keken, PE, Vrijmoed, J C, and Hacker, BR. "U52B-03: Modeling the Migration of Fluids in Subduction Zones," EOS Trans AGU, Fall Meeting, 2011.

Spiegelman, M and Wilson, CR. "DI14A-01 Keeping it Together: Advanced algorithms and software for magma dynamics (and other coupled multi-physics problems)," EOS Trans AGU, Fall Meeting, 2011.

Kramer, Stephan C.; Wilson, Cian R.; Davies, D. Rhodri. "An implicit free surface algorithm for geodynamical simulations," PHYSICS OF THE EARTH AND PLANETARY INTERIORS, v.194, 2012, p. 25-37.

Davies, RD, Cian R Wilson, SC Kramer. "Fluidity: A fully unstructured anisotropic adaptive mesh computational modeling framework for geodynamics," Geochemistry, Geophysics, Geosystems, v.12, 2011, p. n/a-n/a. doi:10.1029/2011GC003551

van Keken, Peter E.; Hacker, Bradley R.; Syracuse, Ellen M.; Abers, Geoff A.. "Subduction factory: 4. Depth-dependent flux of H2O from subducting slabs worldwide," JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, v.116, 2011, p. 15 PP..

KEYWORDS

magma magmatism subduction factory mantle wedging seismology geology and tectonics arc fluid flow margins

THEMES

Earth fundamentals