Strong heterogeneity caused by deep mantle layering

By Paul J. Tackley. 2002

179 citations recorded by the source corpus.

View Paper: https://www.semanticscholar.org/paper/9e8cad8f083c6786399c41331af9ea095363ad33

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In Geophysics

Citations in the corpus

The primitive nature of large low shear-wave velocity provinces (2012, background): “Meanwhile, experimental (Davaille, 1999; Le Bars and Davaille, 2004) and numerical (Tackley, 2002; McNamara and Zhong, 2004; Tan and Gurnis, 2007; Deschamps and Tackley, 2008, 2009) models of thermo-chemical convection including an initial layer of dense material showed that reservoirs of dense…”
Evolution of U-Pb and Sm-Nd systems in numerical models of mantle convection and plate tectonics (2004, methodology): “Compositional variations are tracked using tracer particles, as detailed by Tackley [2002b] and Tackley and King [2003], with the addition that each tracer carries a certain mass (number of atoms) of each trace element.”
Thermal versus elastic heterogeneity in high‐resolution mantle circulation models with pyrolite composition: High plume excess temperatures in the lowermost mantle (2009, background): “…to investigate the behavior of mantle flow with compositional variations [e.g., Christensen and Hofmann, 1994; Davaille, 1999; Kellogg et al., 1999; Tackley, 2000, 2002], and to illuminate the dynamic consequences of a dense component in the deep mantle [Hansen and Yuen, 1989, 1994, 2000; Montague…”
Evolution of Helium and Argon Isotopes in a Convecting Mantle: Physics of the Earth and Planetary In (2004, methodology): “Compositional variations are tracked using tracer particles, as detailed in(Tackley, 2002; Tackley and King, 2003), with the addition that each tracer carries a certain mass (number of atoms) of each trace element.”
Modelling compressible mantle convection with large viscosity contrasts in a three-dimensional spherical shell using the yin-yang grid (2008, background): “The code is a development of Stag3D, initially developed n 1992 (Tackley, 1993) and steadily developed since then (e.g., ackley, 1996, 1998b, 2002; Tackley and Xie, 2003), and thus inherts most of the features of that code.”
Dynamics and evolution of the deep mantle resulting from thermal, chemical, phase and melting effects (2012, methodology): “D cartesian calculations (Tackley, 1998; Tackley, 2002) found that the long-term solution is ridges/spokes.”
Constraints on thermochemical convection of the mantle from plume heat flux, plume excess temperature, and upper mantle temperature (2006, background): “…significant effects on the dynamics of the mantle, as demonstrated by studies on heat transfer and mantle structure for a compositionally heterogeneous or layered mantle [Davaille, 1999a, 1999b; Tackley, 1998, 2002; Kellogg et al., 1999; Jellinek and Manga, 2002; McNamara and Zhong, 2004, 2005].”
LINKS BETWEEN LONG‐LIVED HOT SPOTS, MANTLE PLUMES, D″, AND PLATE TECTONICS (2004, background): “…mantle convection are typically limited to two dimensions [e.g., Christensen, 1984b; Montague and Kellogg, 2000; Farnetani, 1997; McNamara and Zhong, 2004a], though three-dimensional simulations are currently being performed [e.g., Tackley, 2002; Tackley and Xie, 2002; McNamara and Zhong, 2004b].”
Whole-mantle convection and the transition-zone water filter (2002, background): “Lack of observation of these undulations in tomography are attributed to the somewhat fortuitous cancellation of chemical and thermal effects in causing seismic velocity anomalie”
Reconciling dynamic and seismic models of Earth's lower mantle: The dominant role of thermal heterogeneity (2012, methodology): “…variations dominate Earth’s lower mantle seismic heterogeneity structure contrasts with conclusions from the majority of earlier studies (e.g. Tackley, 1998, 2002; McNamara and Zhong, 2005; Tan and Gurnis, 2007; Deschamps and Tackley, 2008, 2009; Bull et al., 2009), which warrants further…”
In situ observations of phase transition between perovskite and CaIrO3-type phase in MgSiO3 and pyrolitic mantle composition (2005, background): “Many researchers have tried to explain these seismic properties at the DW layer using various models, such as phase transitions, partial melt, chemical heterogeneity, mineralogical anisotropy, and small-scale convection [e.g., [9] [10] [11] [12] [13]].”
On the statistical distribution of seismic velocities in Earth's deep mantle (2008, background): “Forward models of mantle convection including a layer of chemically distinct and relatively dense material reveal striking similarities with the two LLSVP imaged in the deep mantle (e.g., Tackley, 1998, 2002; McNamara and Zhong, 2004; Tan and Gurnis, 2005).”
The influence of MORB and harzburgite composition on thermo-chemical mantle convection in a 3-D spherical shell with self-consistently calculated mineral physics (2010, background): “In addition, compositional variations cause an eye-like structure because of lateral variations in the depth of the global basalt layer above the CMB (Tackley, 2002).”
Thermochemical structures within a spherical mantle: Superplumes or piles? (2004, background): “…et al., 1997; van der Hilst et al., 1997; Bijwaard et al., 1998], geophysical arguments based on plume flux [Davies and Richards, 1992], and numerical models illustrating the very high temperature contrast between layers [Spohn and Schubert, 1982; McNamara and van Keken, 2000; Tackley, 2002].”