Abstract
Over the last 20 years, global seismology has made significant progress in mapping the deep interior of the Earth. Tomographic studies identified variations in lower-mantle chemistry and phase transitions with depths of observed seismic heterogeneities occupying the entire range of the lower mantle. Three major zones of seismic heterogeneities can be outlined. The upper (shallow) zone from 660–1300 km includes ~70% of all heterogeneities, observed almost equally near subduction zones and beneath the tectonic plates. The middle zone, from 1300 to 1900 km, includes ~20% of all heterogeneities, which are observed entirely near subduction zones. The lower zone, from 1900 km to the border of D″ layer at 2700 km includes only a small number of heterogeneities. The deepest seismic heterogeneities, identified within the central parts of the Eurasian and North American plates, are located at depths of ~2630 km and ~2400 km. No correlation between the observed seismic heterogeneities and major mineral phase transitions and spin crossover were identified. The seismic heterogeneities, most likely, reflect local and regional chemical variations within the lower mantle.
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References
Becker, T. W., Kellog, J. B., & O’Connell, R. J. (1999). Thermal constraints on the survival of primitive blobs in the lower mantle. Earth and Planetary Science Letters, 171, 351–365.
Bina, C. R. (1998). Lower mantle mineralogy and the geophysical perspective. Reviews in Mineralogy, 37, 205–239.
Cao, A., & Romanowicz, B. (2007). Locating scatterers in the mantle using array analysis of PKP precursors from an earthquake doublet. Earth and Planetary Science Letters, 255, 22–31. doi:10.1016/j.epsl.2006.12.002
Castle, J. C., & Creager, K. C. (1999). A steeply dipping discontinuity in the lower mantle beneath Izu-Bonin. Journal of Geophysical Research, 104(B4), 7279–7292.
Castle, J. C., & van der Hilst, R. D. (2003). Searching for seismic scattering off mantle interfaces between 800 km and 2000 km depth. Journal of Geophysical Research, 108(B2), 2095. doi:10.1029/2001JB000286
Courtier, A. M., & Revenaugh, J. (2008). Slabs and shear wave reflectors in the midmantle. Journal of Geophysical Research, 113, B08312. doi:10.1029/2007JB005261
Dai, L., Kudo, Y., Hirose, K., Murakami, M., Asahara, Y., Ozawa, H., et al. (2013). Sound velocities of Na0.4Mg0.6Al1.6Si0.4O4 NAL and CF phases to 73 GPa determined by Brillouin scattering method. Physics and Chemistry of Minerals, 40, 195–201.
Davies, G. F. (1984). Geophysical and isotopic constraints on mantle convection: An interim synthesis. Journal of Geophysical Research. Solid Earth 89, 6017–6040. doi:10.1029/JB089iB07p06017
Deuss, A., Andrews, & J., Day, E. (2013). Seismic observations of mantle discontinuities and their mineralogical and dynamical interpretation. In: S.-I. Karato, (Ed.), Physics and Chemistry of Deep Earth. (pp.287–323). USA: Wiley.
Dziewonski, A. M., & Anderson, D. L. (1981). Preliminary reference Earth model. Physics of the Earth and Planetary Interiors, 25(4), 297–356.
Girard, J., Amulele, G., Farla, R., Mohiuddin, A., & Karato, S.-I. (2016). Shear deformation of bridgmanite and magnesiowüstite aggregates at lower mantle conditions. Science, 351(6269), 144–147. doi:10.1126/science.aad3113
Gurnis, M., & Davies, G. F. (1986). Mixing in numerical-models of mantle convection incorporating plate kinematics, mixing in the mantle and the possible survival of primitive mantle. Journal of Geophysical Research, 91, 6375–6395.
Helffrich, G. R., & Wood, B. J. (2001). The Earth’s mantle. Nature, 412(6846), 501–507.
Jenkins, J., Deuss, A., & Cottaar, S. (2017). Converted phases from sharp 1000 km depth mid-mantle heterogeneity beneath Western Europe. Earth and Planetary Science Letters, 459, 196–207. doi:10.1016/j.epsl.2016.11.031
Johnson, L. R. (1969). Array measurements of P velocities in the lower mantle. Bulletin of the Seismological Society of America, 59(2), 973–1008.
Kaminsky, F. V. (2012). Mineralogy of the lower mantle: A review of ‘super-deep’ mineral inclusions in diamond. Earth-Science Reviews, 110(1–4), 127–147.
Kaminsky, F. V., & Lin, J.-F. (2017). Iron partitioning in natural lower-mantle minerals: Toward a chemically heterogeneous lower mantle. American Mineralogist, 102(4), 824–832. doi:10.2138/am-2017-5949.
Kaminsky, F. V., Wirth, R., & Schreiber, A. (2015). A microinclusion of lower-mantle rock and some other lower-mantle inclusions in diamond. Canadian Mineralogist, 53(1), 83–104. doi:10.3749/canmin.1400070
Kaneshima, S. (2003). Small-scale heterogeneity at the top of the lower mantle around the Mariana slab. Earth and Planetary Science Letters, 209, 85–101. doi:10.1016/S0012-821X(03)00048-7
Kaneshima, S. (2009). Seismic scatterers at the shallowest lower mantle beneath subducted slabs. Earth and Planetary Science Letters, 286, 304–315. doi:10.1016/j.epsl.2009.06.044
Kaneshima, S. (2013). Lower mantle seismic scatterers below the subducting Tonga slab: Evidence for entrainment of transition zone material. Physics of the Earth and Planetary Interiors, 222, 35–46. doi:10.1016/j.pepi.2013.07.001
Kaneshima, S. (2016). Seismic scatterers in the mid-lower mantle. Physics of the Earth and Planetary Interiors, 257, 105–114. doi:10.1016/j.pepi.2016.05.004
Kaneshima, S., & Helffrich, G. (1998). Detection of lower mantle scatterers northeast of the Marianna subduction zone using short-period array data. Journal of Geophysical Research, 103, 4825–4838.
Kaneshima, S., & Helffrich, G. (1999). Dipping low-velocity layer in the mid-lower mantle: Evidence for geochemical heterogeneity. Science, 283, 1888–1891.
Kaneshima, S., & Helffrich, G. (2003). Subparallel dipping heterogeneities in the mid-lower mantle. Journal of Geophysical Research 108(B5), 2272. doi:10.1029/2001JB001596
Kaneshima, S., & Helffrich, G. (2010). Small scale heterogeneity in the mid-lower mantle beneath the circum-Pacific area. Physics of the Earth and Planetary Interiors, 183, 91–103. doi:10.1016/j.pepi.2010.03.011
Katsura, T., Yoneda, A., Yamazaki, D., Yoshino, T., & Ito E. (2010). Adiabatic temperature profile in the mantle. Physics of the Earth and Planetary Interiors, 183, 212–218. doi: 10.1016/j.pepi.2010.07.001
Kawakatsu, H., & Niu, F. L. (1994) Seismic evidence for a 920-km discontinuity in the mantle, Nature, 371, 301–305.
Kellogg, L. H., & Turcotte, D. L. (1990) Mixing and the distribution of heterogeneities in a chaotically convecting mantle. Journal of Geophysical Research: Solid Earth, 95(B1), 421–432. doi:10.1029/JB095iB01p00421
Kellogg, L. H., Hager, B. H., & van der Hilst, R. D. (1999). Compositional stratification in the deep mantle, Science, 283, 1881–1884.
Kennett, B., Engdahl, E., & Buland, R. (1995). Constraints on seismic velocities in the Earth from traveltimes. Geophysical Journal International, 122, 108–124.
Krüger, F., Banumann, M., Scherbaum, F., & Weber, M. (2001). Mid mantle scatterers near the Mariana slab detected with a double array method. Geophysical Research Letters, 28, 667–670.
Labrosse, S., Hernlund, J. W., & Coltice, N. (2007). A crystallizing dense magma ocean at the base of Earth’s mantle. Nature, 450, 866–869.
Lee, C.-T. A., Luffi, P., Höink, T., Li, J., Dasgupta, R., & Hernlund, J. (2010). Upside-down differentiation and generation of a ‘primordial’ lower mantle. Nature, 463, 930–933.
Le Stunff, Y., Wicks, C. W., & Jr., Romanowicz, B. (1995). Evidence for mid-mantle reflectors. Science, 270(5233), 74–77.
Le Stunff, Y., Wicks, C. W., & Jr., Romanowicz , B. (2015) P′P′ Precursors under Africa: Evidence for mid-mantle reflectors. Science, 270(5233), 74–77.
Li, J., & Yuen, D. A. (2014). Mid-mantle heterogeneities associated with Izanagi plate: Implications for regional mantle viscosity. Earth and Planetary Science Letters, 385, 137–144.
Li, Y., Deschamps, F., & Tackley, P.J. (2014). The stability and structure of primordial reservoirs in the lower mantle: insights from models of thermochemical convection in three-dimensional spherical geometry. Geophysical Journal International, 199, 914–930. doi:10.1093/gji/ggu295
Liu, K., Gao, S., Silver, P., & Zhang, Y. (2003). Mantle layering across central South America. Journal of Geophysical Research, 108(B11), 2510. doi:10.1029/2002JB002208
Ma, X., Sun, X., Wiens, D.A., Wend, L., Nyblade, A., Anandakrishnan, S., et al. (2016). Strong seismic scatterers near the core–mantle boundary north of the Pacific Anomaly. Physics of the Earth and Planetary Interiors, 253, 21–30. doi:10.1016/j.pepi.2016.01.007
Manga, M. (1996). Mixing of heterogeneities in the mantle: Effect of viscosity differences. Geophysical Research Letters, 23(4), 403–406.
Muirhead, K. J., & Hales, A. L. (1980). Evidence for P wave velocity discontinuities at depths greater than 650 km in the mantle. Physics of the Earth and Planetary Interiors, 23, 304–313.
Niu, F. (2014). Distinct compositional thin layers at mid-mantle depths beneath northeast China revealed by the US Array. Earth and Planetary Science Letters, 402, 305–312. doi:10.1016/j.epsl.2013.02.015
Niu, F., & Kawakatsu, H. (1997). Depth variation of the mid-mantle seismic discontinuity. Geophysical Research Letters, 24, 429–432.
Niu, F., Kawakatsu, H., & Fukao, Y. (2003). Seismic evidence for a chemical heterogeneity in the midmantle: A strong and slightly dipping seismic reflector beneath the Mariana subduction zone. Journal of Geophysical Research, 108(B9), 2419. doi:10.1029/2002JB002384
Nomura, R., K. Hirose, N. Sata, and Ohishi Y. (2010). Precise determination of post-stishovite phase transition boundary and implications for seismic heterogeneities in the mid-lower mantle. Physics of the Earth and Planetary Interiors, 183, 104–109, doi:10.1016/j.pepi.2010.08.004
Nomura R., Ozawa H., Tateno S., Hirose K., Hernlund H., Muto S., et al. (2011). Spin crossover and iron-rich silicate melt in the Earth’s deep mantle. Nature, 473, 199–203.
Petersen, N., Gossler, J., Kind, R, Stammler, K., & Vinnik, L. (1993). Precursorsto SS and the structure of transition zone of the north-western Pacific. Geophysical Research Letters, 20(4), 281–284.
Revenaugh, J., & Jordan, T. H. (1991). Mantle Layering From ScS Reverberations. 3. The Upper Mantle. Journal of Geophysical Research, 96(B12) 19781–19810.
Revenaugh, J., & Sipkin, S. A. (1994). Mantle discontinuity structure beneath China. Journal of Geophysical Research, 99(B11), 21911–21927.
Rost, S., Garnero, E. J., & Williams, Q. (2008). Seismic array detection of subducted oceanic crust in the lower mantle. Journal of Geophysical Research, 113, B06303. doi:10.1029/2007JB005263
Ryabchikov, I. D., & Kaminsky, F. V. (2013). The composition of the lower mantle: Evidence from mineral inclusions in diamonds. Doklady Earth Sciences, 453(2), 1246–1249. doi:10.1134/S1028334X13120155
Ryabchikov I. D., & Kaminsky F. V. (2014). Physicochemical parameters of material in mantle plumes: Evidence from the thermodynamic analysis of mineral inclusions in sublithospheric diamonds. Geochemistry International, 52(11), 903–911. doi:10.1134/S001670291411007X
Shen, Y., Wolfe, C. J., & Solomon, S. C. (2003). Seismological evidence for a mid-mantle discontinuity beneath Hawaii and Iceland. Earth and Planetary Science Letters, 214(1–2), 143–151. doi:10.1016/S0012-821X(03)00349-2
Souriau, A. (1986). First analyses of broadband records on the geoscope network: Potential for detailed studies of mantle discontinuities. Geophysical Research Letters, 13 (10), 1011–1014.
Thomas, C., Kendall, J.-M., & Lowman, J. (2004). Lower-mantle seismic discontinuities and the thermal morphology of subducted slabs. Earth and Planetary Science Letters, 225, 105–113.
Trampert, J., & Fishtner, A. (2013). Global imaging of the Earth’s deep interior seismic constrains on anisotropy, density and attenuation. In: S.-I. Karato, (Ed.), Physics and Chemistry of Deep Earth. (pp. 324–351). USA: Wiley.
Tromp, J., & Ishii, M. (1998) Normal mode and free-air gravity constraints on the Large Scale Structure of the Mantle (abstract). Fall AGU Meeting. Eos, Transactions American Geophysical Union, 79(45, Suppl.), F598.
Tsuchiya, T. (2011). Elasticity of subducted basaltic crust at the lower mantle pressures: insights on the nature of deep mantle heterogeneity. Physics of the Earth and Planetary Interiors, 188, 142–149. doi:10.1016/j.pepi.2011.06.018
Tsuchiya, T. (2013). Elasticity of subducted basaltic crust at the lower mantle pressures: Insights of the nature of deep mantle heterogeneity. Physics of the Earth and Planetary Interiors, 188, 142–149. doi:10.1016/j.pepi.2011.06.018
Vanacore, E., Niu, F., & Kawakatsu, H. (2006). Observations of the mid-mantle discontinuity beneath Indonesia from S to P converted waveforms. Geophysical Research Letters, 33, L04302. doi:10.1029/2005GL025106
van der Hilst, R. D., & Kárason, H. (1999). Compositional heterogeneity in the bottom 1000 Kilometers of Earth’s mantle: Toward a hybrid convection model. Science, 283, 1885–1888.
Vinnik, L., Niu, F., & Kawakatsu, H. (1998). Broadband converted phases from midmantle discontinuities. Earth Planets Space, 50, 987–99.
Vinnik, L., Kato, M., & Kawakatsu, H. (2001). Search for seismic discontinuities in the lower mantle. Geophysical Journal International, 147, 41–56.
Vinnik, L. P., Oreshin, S. I., Speziale, S., & Weber, M. (2010) Mid-mantle layering from SKS receiver functions. Geophysical Research Letters, 37, L24302.
Wicks, Jr., C. W., & Richards, M. A. (1993). A detailed map of the 660-kilometer discontinuity beneath the Izu-Bonin subduction zone. Science, 261, 1424–1427.
Wicks, C., Weber, M., Le Stunff, Y., & Romanowicz, R. (1996). California broadband array evidence for an upper mantle reflector beneath the West Mariana Ridge (abstract). Fall AGU meeting, San Francisco, Eos, Transactions American Geophysical Union, 77(46, Suppl.), F492.
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Kaminsky, F.V. (2017). Seismic Heterogeneities and Their Nature in the Lower Mantle. In: The Earth's Lower Mantle. Springer Geology. Springer, Cham. https://doi.org/10.1007/978-3-319-55684-0_10
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