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Wash. U. Experimental Geochemistry
Experimental Geochemistry: Its all about constraining the processes that form the planets (P, T, X, t)
Piston Cylinder
1-atm Gas MixingFurnaceCold-seal Gas
Pressure Vessel
Wash. U. Experimental Geochemistry
Wash. U. Experimental Geochemistry
Mantle Wedge
Lower Crust
Shallow Crust
Subducting Slab
Magma Ocean Silicate Cumulates
Plag Crust
KREEP Zone
Lower Mantle
500 km
Kinematics:
How should we relate seismic anisotropy to flow patterns near plate boundaries?
Wash. U. Rock Deformation Lab
Dynamics:
How do rocks deform near plate boundaries or deep in Earth’s mantle?
How do deforming rocks generate different styles of plate tectonics on Earth and other planets?
Wash. U. Rock Deformation Lab
P = 1 GPa T = 1250 C
emax ~0.5
Griggs Apparatus
Linckens et al. (2014)
Wash. U. Rock Deformation Lab
P = 6 GPaT = 1300 Cg = limited only by time
Large Volume Torsion Apparatus
Wash. U. Rock Deformation Lab
Experiments over next several years will focus on two phase materials:
olivine + pyroxene (mantle)
plag + pyroxene (mafic crust)
cpx + garnet (eclogitized crust)
How do the rheology and microstructure of polymineralic rocks evolve as a function of strain, and under what conditions does this behavior diverge from the behavior of idealized monomineralic aggregates?
Large Volume Torsion Apparatus