Geophysics of Chemical Heterogeneity€¦ · Mantle Heterogeneity Hofmann & White (1982) Allegre &...
Transcript of Geophysics of Chemical Heterogeneity€¦ · Mantle Heterogeneity Hofmann & White (1982) Allegre &...
GeophysicsofChemicalHeterogeneity
LarsStixrudeUniversityCollegeLondon
ChemicalGeodynamics
LLSVP
Bolton&Masters(2001)JGRNietal.(2002)ScienceFrost&Rost (2014)EPSL
Bouysee etal.(2010)
rd,hd~50 km
rc, hc~7 km
Stixrude&Lithgow-Bertelloni (2012)AREPS
Mantle Heterogeneity
Green & Ringwood (1967)
Stixrude&Lithgow-Bertelloni (2012)AREPS
Mantle Heterogeneity
Hofmann & White (1982)
Allegre & Turcotte (1986)
Stixrude&Lithgow-Bertelloni (2012)AREPS
Mantle Heterogeneity
Stixrude&Lithgow-Bertelloni (2012)AREPS
HeFESTo
Irifune & Isshiki (1998)
Robie & Hemingway (1995)
Anderson & Isaak (1995)
Morishima et al. (1994); Suzuki et al. (2000); Fei et al. (2004); Yang & Ghose (1995); Boyd et al. (1964); Pacalo & Gasparik (1990); Presnall et al. (1998); Ita & Navrotsky (1985); Hirose et al. (2001); Woodland & Angel (1997); Bohlen et al. (1980); Akimoto & Syono (1970); Katsura et al. (1998); Yagi et al. (1987); Sen (1985); Irifune et al. (1986); Irifune (1987, 1994); Klemme & O’Neill (2000)
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G σij ,T,! n ( )
Stixrude&Lithgow-Bertelloni (2005,2011)GJI
Xu etal.(2008)EPSL
ObservedComputed from MM model via ray-tracing
Ritsema et al. (2009) EPSL
EA
MM
Tomography
Ritsema etal.(2009)EPSL
Basaltvs.Harzburgite
dlnVS (%
)
Stixrude&Lithgow-Bertelloni (2012)AREPS
Xu etal.(2008)EPSL
Zhangetal.(2013)EPSL
Zhangetal.(2013)EPSL
Zhangetal.(2013)EPSL
Tsuchiyaetal.(2006)PRL
FirstPrinciplesMolecularDynamics
(Mg0.75Fe0.25)O
Holmström &Stixrude(2016)PRB
Holmstrom & Stixrude (2015) PRL
HighSpinFraction
Holmstrom & Stixrude (2015) PRL
OriginofMixedSpinState
0
2 0
2 2
0
Holmstrom & Stixrude (2015) PRL
MetallicMelt
Zhangetal.(2015)GRL