Abstract
Mantle plumes were conceived as thin, vertical conduits in which buoyant, hot rock from the lowermost mantle rises to Earth’s surface, manifesting as hotspot-type volcanism far from plate boundaries. Spatially correlated with hotspots are two vast provinces of slow seismic wave propagation in the lowermost mantle, probably representing the heat reservoirs that feed plumes. Imaging plume conduits has proved difficult because most are located beneath the non-instrumented oceans, and they may be thin. Here we combine new seismological datasets to resolve mantle upwelling across all depths and length scales, centred on Africa and the Indian and Southern oceans. Using seismic waves that sample the deepest mantle extensively, we show that mantle upwellings are arranged in a tree-like structure. From a central, compact trunk below ~1,500 km depth, three branches tilt outwards and up towards various Indo-Austral hotspots. We propose that each tilting branch represents an alignment of vertically rising blobs or proto-plumes, which detached in a linear staggered sequence from their underlying low-velocity corridor at the core–mantle boundary. Once a blob reaches the viscosity discontinuity between lower and upper mantle, it spawns a ‘classical’ plume-head/plume-tail sequence.
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Data availability
All data used in this study are freely retrievable from international data centres that support the ‘web service’ protocol of the International Federation of Digital Seismograph Networks. We used the obspyDMT software of Hosseini and Sigloch56 to retrieve and pre-process all the waveforms used in this study. Our tomography model and the models compared with in this paper are freely available through the ‘SubMachine’ tomography web portal: http://submachine.earth.ox.ac.uk/ (where the user can select models, depths and other parameters).
Code availability
The software used for tomographic inversion is available upon request from the corresponding author. It was customized from the software freely available at https://www.geoazur.fr/GLOBALSEIS/Soft.html.
References
Morgan, W. J. Convection plumes in the lower mantle. Nature 230, 42–43 (1971).
Sleep, N. H. Hotspots and mantle plumes: some phenomenology. J. Geophys. Res. 95, 6715–6736 (1990).
Davies, G. F. Ocean bathymetry and mantle convection: 1. Large-scale flow and hotspots. J. Geophys. Res. Solid Earth 93, 10467–10480 (1988).
Burke, K., Steinberger, B., Torsvik, T. H. & Smethurst, M. A. Plume generation zones at the margins of large low shear velocity provinces on the core–mantle boundary. Earth Planet. Sci. Lett. 265, 49–60 (2008).
Garnero, E. J., McNamara, A. K. & Shim, S.-H. Continent-sized anomalous zones with low seismic velocity at the base of Earth’s mantle. Nat. Geosci. 9, 481–489 (2016).
Ritsema, J., Van Heijst, H. J. & Woodhouse, J. H. Complex shear wave velocity structure imaged beneath Africa and Iceland. Science 286, 1925–1928 (1999).
Montelli, R. et al. Finite-frequency tomography reveals a variety of plumes in the mantle. Science 303, 338–343 (2004).
French, S. W. & Romanowicz, B. Broad plumes rooted at the base of the Earth’s mantle beneath major hotspots. Nature 525, 95–99 (2015).
Davaille, A. Simultaneous generation of hotspots and superwells by convection in a heterogeneous planetary mantle. Nature 402, 756–760 (1999).
Kumagai, I., Davaille, A., Kurita, K. & Stutzmann, E. Mantle plumes: thin, fat, successful, or failing? Constraints to explain hot spot volcanism through time and space. Geophys. Res. Lett. 35, L16301 (2008).
Davaille, A., Stutzmann, E., Silveira, G., Besse, J. & Courtillot, V. Convective patterns under the Indo-Atlantic «box». Earth Planet. Sci. Lett. 239, 233–252 (2005).
Steinberger, B. & Antretter, M. Conduit diameter and buoyant rising speed of mantle plumes: implications for the motion of hot spots and shape of plume conduits. Geochem. Geophys. Geosyst. 7, Q11018 (2006).
Courtillot, V., Davaille, A., Besse, J. & Stock, J. Three distinct types of hotspots in the Earth’s mantle. Earth Planet. Sci. Lett. 205, 295–308 (2003).
Suetsugu, D. et al. South Pacific mantle plumes imaged by seismic observation on islands and seafloor. Geochem. Geophys. Geosyst. 10, Q11014 (2009).
Wolfe, C. J. et al. Mantle shear-wave velocity structure beneath the Hawaiian hot spot. Science 326, 1388–1390 (2009).
Schlömer, A., Geissler, W. H., Jokat, W. & Jegen, M. Hunting for the Tristan mantle plume—an upper mantle tomography around the volcanic island of Tristan da Cunha. Earth Planet. Sci. Lett. 462, 122–131 (2017).
Nolet, G. et al. Imaging the Galápagos mantle plume with an unconventional application of floating seismometers. Sci. Rep. 9, 1326 (2019).
Barruol, G. & Sigloch, K. Investigating La Réunion hot spot from crust to core. Eos 94, 205–207 (2013).
Morgan, W. J. in The Oceanic Lithosphere (Ed. Emiliani, C.) 443 (Wiley, 1981).
Richards, M. A., Duncan, R. A. & Courtillot, V. E. Flood basalts and hot spot tracks: plume heads and tails. Science 246, 103–107 (1989).
Engdahl, E. R., van der Hilst, R. & Buland, R. Global teleseismic earthquake relocation with improved travel times and procedures for depth determination. Bull. Seismol. Soc. Am. 88, 722–743 (1998).
Weston, J., Engdahl, E. R., Harris, J., Di Giacomo, D. & Storchak, D. A. ISC-EHB: reconstruction of a robust earthquake data set. Geophys. J. Int. 214, 474–484 (2018).
Hosseini, K. et al. Global mantle structure from multifrequency tomography using P, PP and P-diffracted waves. Geophys. J. Int. 220, 96–141 (2020).
Masters, G., Laske, G., Bolton, H. & Dziewonski, A. in Earth’s Deep Interior: Mineral Physics and Tomography from the Atomic to the Global Scale (eds Karato, S.-I. et al.) 63–87 (AGU, 2000).
Ni, S., Tan, E., Gurnis, M. & Helmberger, D. Sharp sides to the African superplume. Science 296, 1850–1852 (2002).
Grand, S. P., Van Der Hilst, R. D. & Widiyantoro, S. Global seismic tomography: a snapshot of convection in the Earth. GSA Today 7, 1–7 (1997).
Rindraharisaona, E. J. et al. Crustal structure of southern Madagascar from receiver functions and ambient noise correlation: implications for crustal evolution. J. Geophys. Res. Solid Earth 122, 1179–1197 (2017).
Pratt, M. J. et al. Shear velocity structure of the crust and upper mantle of Madagascar derived from surface wave tomography. Earth Planet. Sci. Lett. 458, 405–417 (2017).
Roberts, G. G., Paul, J. D., White, N. & Winterbourne, J. Temporal and spatial evolution of dynamic support from river profiles: a framework for Madagascar. Geochem. Geophys. Geosyst. 13, 1525–2027 (2012).
Cucciniello, C. et al. From olivine nephelinite, basanite and basalt to peralkaline trachyphonolite and comendite in the Ankaratra volcanic complex, Madagascar: 40Ar/39Ar ages, phase compositions and bulk-rock geochemical and isotopic evolution. Lithos 274–275, 363–382 (2017).
Mazzullo, A. et al. Anisotropic tomography around La Réunion Island from Rayleigh waves. J. Geophys. Res. Solid Earth 122, 9132–9148 (2017).
Barruol, G. et al. Large-scale flow of Indian Ocean asthenosphere driven by Réunion plume. Nat. Geosci. https://doi.org/10.1038/s41561-019-0479-3 (2019).
O’Neill, C., Müller, D. & Steinberger, B. On the uncertainties in hot spot reconstructions and the significance of moving hot spot reference frames. Geochem. Geophys. Geosyst. 6, Q04003 (2005).
Matthews, K. J. et al. Global plate boundary evolution and kinematics since the late Paleozoic. Glob. Planet. Change 146, 226–250 (2016).
Ring, U. The east African rift system. Austrian J. Earth Sci. 107, 132–146 (2014).
Hager, B. H., Richards, M. A., Dziewonski, A. M., Comer, R. P. & Clayton, R. W. Lower mantle heterogeneity, dynamic topography and the geoid. Nature 314, 752–752 (1985).
Hansen, S. E., Nyblade, A. A. & Benoit, M. H. Mantle structure beneath Africa and Arabia from adaptively parameterized P-wave tomography: implications for the origin of Cenozoic Afro-Arabian tectonism. Earth Planet. Sci. Lett. 319–320, 23–34 (2012).
Turner, J. S. Buoyancy Effects in Fluids (Cambridge Univ. Press, 1973).
Namiki, A. & Kurita, K. The influence of boundary heterogeneity in experimental models of mantle convection with internal heat sources. Phys. Earth Planet. Inter. 128, 195–205 (1999).
Austermann, J., Kaye, B. T., Mitrovica, J. X. & Huybers, P. A statistical analysis of the correlation between large igneous provinces and lower mantle seismic structure. Geophys. J. Int. 197, 1–9 (2014).
Gibbons, A. D., Whittaker, J. M. & Müller, R. D. The breakup of East Gondwana: assimilating constraints from Cretaceous ocean basins around India into a best-fit tectonic model. J. Geophys. Res. Solid Earth 118, 808–822 (2013).
Coffin, M. F. et al. Kerguelen hotspot magma output since 130 Ma. J. Petrol. 43, 1121–1139 (2002).
Storey, M. et al. Timing of hot spot-related volcanism and the breakup of Madagascar and India. Science 267, 852–855 (1995).
Nürnberg, D. & Müller, R. D. The tectonic evolution of the South Atlantic from Late Jurassic to present. Tectonophysics 191, 27–53 (1991).
Courtillot, V., Jaupart, C., Manighetti, I., Tapponnier, P. & Besse, J. On causal links between flood basalts and continental breakup. Earth Planet. Sci. Lett. 166, 177–195 (1999).
White, R. & McKenzie, D. Magmatism at rift zones: the generation of volcanic continental margins and flood basalts. J. Geophys. Res. 94, 7685–7729 (1989).
Courtillot, V. E. & Renne, P. R. On the ages of flood basalt events. C. R. Geosci. 335, 113–140 (2003).
Madrigal, P., Gazel, E., Flores, K. E., Bizimis, M. & Jicha, B. Record of massive upwellings from the Pacific large low shear velocity province. Nat. Commun. 7, 13309 (2016).
Jones, A. G., Afonso, J. C. & Fullea, J. Geochemical and geophysical constrains on the dynamic topography of the Southern African Plateau. Geochem. Geophys. Geosyst. 18, 3556–3575 (2017).
Dupre, B. & Allegre, C. J. Pb–Sr isotope variation in Indian Ocean basalts and mixing phenomena. Nature 303, 142–145 (1983).
Jackson, M. G., Becker, T. W. & Konter, J. G. Evidence for a deep mantle source for EM and HIMU domains from integrated geochemical and geophysical constraints. Earth Planet. Sci. Lett. 484, 154–167 (2018).
Tilmann, F., Yuan, X., Rümpker, G. & Rindraharisaona, E. SELASOMA Project, Madagascar 2012–2014 (Deutsches GeoForschungsZentrum, 2012); https://doi.org/10.14470/MR7567431421
Wysession, M., Wiens, D. & Nyblade, A. Investigation of sources of intraplate volcanism using PASSCAL broadband instruments in Madagascar, the Comores, and Mozambique (International Federation of Digital Seismograph Networks, 2011); https://doi.org/10.7914/SN/XV_2011
Cande, S. C. & Stegman, D. R. Indian and African plate motions driven by the push force of the Réunion plume head. Nature 475, 47–52 (2011).
Barruol, G., Sigloch, K., RHUM-RUM Group & RESIF. HUM-RUM experiment, 2011-2015, code YV (Réunion Hotspot and Upper Mantle – Réunion’s Unterer Mantel) funded by ANR, DFG, CNRS-INSU, IPEV, TAAF, instrumented by DEPAS, INSU-OBS, AWI and the Universities of Muenster, Bonn, La Réunion (RESIF - Réseau Sismologique et géodésique Français, 2011); https://www.fdsn.org/networks/detail/YV_2011/
Hosseini, K. & Sigloch, K. ObspyDMT: a Python toolbox for retrieving and processing large seismological data sets. Solid Earth 8, 1047–1070 (2017).
Stähler, S. C. et al. Performance report of the RHUM–RUM ocean bottom seismometer network around La Réunion, western Indian Ocean. Adv. Geosci. 41, 43–63 (2016).
Sigloch, K. & Nolet, G. Measuring finite-frequency body-wave amplitudes and traveltimes. Geophys. J. Int. 167, 271–287 (2006).
Nissen-Meyer, T. et al. AxiSEM: broadband 3-D seismic wavefields in axisymmetric media. Solid Earth https://doi.org/10.5194/se-5-425-2014 (2014).
van Driel, M., Krischer, L., Stähler, S. C., Hosseini, K. & Nissen-Meyer, T. Instaseis: instant global seismograms based on a broadband waveform database. Solid Earth 6, 701–717 (2015).
Kennett, B. L. N. IASPEI 1991 seismological tables. Terra Nova 3, 122 (1991).
Dziewonski, A. M. & Anderson, D. L. Preliminary reference Earth model. Phys. Earth Planet. Inter. 25, 297–356 (1981).
Wysession, M. E. Large-scale structure at the core–mantle boundary from diffracted waves. Nature 382, 244–248 (1996).
Kárason, H. & van der Hilst, R. D. Tomographic imaging of the lowermost mantle with differential times of refracted and diffracted core phases (PKP, Pdiff). J. Geophys. Res. Solid Earth 106, 6569–6587 (2001).
Hosseini, K. & Sigloch, K. Multifrequency measurements of core-diffracted P waves (Pdiff) for global waveform tomography. Geophys. J. Int. 203, 506–521 (2015).
Bassin, C., Laske, G. & Masters, G. The current limits of resolution for surface wave tomography in North America. Eos 81, F987 (2000).
Nolet, G. A Breviary of Seismic Tomography (Cambridge Univ. Press, 2008); https://doi.org/10.1017/CBO9780511984709
Ritsema, J., van Heijst, H. J., Woodhouse, J. H. & Deuss, A. Long-period body wave traveltimes through the crust: implication for crustal corrections and seismic tomography. Geophys. J. Int. 179, 1255–1261 (2009).
Dahlen, F. A., Hung, S. & Nolet, G. Frechet kernels for finite-frequency traveltimes—I. Theory. Geophys. J. Int. 141, 157–174 (2000).
Montelli, R., Nolet, G., Dahlen, F. A. & Masters, G. A catalogue of deep mantle plumes: new results from finite-frequency tomography. Geochem. Geophys. Geosyst. 7, Q11007 (2006).
Sigloch, K. Mantle provinces under North America from multifrequency P wave tomography. Geochem. Geophys. Geosyst. https://doi.org/10.1029/2010GC003421 (2011).
Ahrens, J., Geveci, B. & Law, C. in The Visualization Handbook (eds Hansen, C. D. and Johnson, C. R.) 717–731 (Elsevier, 2005).
Hosseini, K. et al. SubMachine: web-based tools for exploring seismic tomography and other models of Earth’s deep interior. Geochem. Geophys. Geosyst. https://doi.org/10.1029/2018GC007431 (2018).
Obayashi, M. et al. Finite frequency whole mantle P wave tomography: improvement of subducted slab images. Geophys. Res. Lett. 40, 5652–5657 (2013).
Houser, C., Masters, G., Shearer, P. & Laske, G. Shear and compressional velocity models of the mantle from cluster analysis of long-period waveforms. Geophys. J. Int. 174, 195–212 (2008).
Moulik, P. & Ekström, G. The relationships between large-scale variations in shear velocity, density, and compressional velocity in the Earth’s mantle. J. Geophys. Res. Solid Earth 121, 2737–2771 (2016).
Ritsema, J., Deuss, A., Van Heijst, H. J. & Woodhouse, J. H. S40RTS: a degree-40 shear-velocity model for the mantle from new Rayleigh wave dispersion, teleseismic traveltime and normal-mode splitting function measurements. Geophys. J. Int. 184, 1223–1236 (2011).
Auer, L., Boschi, L., Becker, T., Nissen-Meyer, T. & Giardini, D. Savani: a variable resolution whole-mantle model of anisotropic shear velocity variations based on multiple data sets. J. Geophys. Res. Solid Earth https://doi.org/10.1002/2013JB010773 (2014).
French, S. W. & Romanowicz, B. A. Whole-mantle radially anisotropic shear velocity structure from spectral-element waveform tomography. Geophys. J. Int. 199, 1303–1327 (2014).
Lu, C. & Grand, S. P. The effect of subducting slabs in global shear wave tomography. Geophys. J. Int. 205, 1074–1085 (2016).
Acknowledgements
RHUM–RUM was funded by Deutsche Forschungsgemeinschaft in Germany (grants SI1538/2-1, SI1538/3-1 and SI1538/4-1 and ship grant R/V Meteor cruise 101) and by Agence Nationale de la Recherche in France (project ANR-11-BS56-0013). Additional supports came from Centre National de la Recherche Scientifique–Institut National des Sciences de l’Univers (CNRS–INSU), Terres Australes et Antarctiques Françaises (TAAF), Institut Polaire Paul Emile Victor (IPEV), University of La Réunion and Alfred Wegener Institut (AWI). OBSs were provided by DEPAS (Deutsche Geräte-Pool für Amphibische Seismologie, Bremerhaven), GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel and INSU-IPGP (Institut National des Sciences de l’Univers - Institut de Physique du Globe de Paris). M.T. was funded by the NERC DTP in Environmental Research award NE/L002612/1 and a St. Edmund Hall RCUK Partnership award. K.S. acknowledges additional funding from the People Programme (Marie Curie Actions) of the European Union’s Seventh Framework Programme FP7/2007-2013/ under REA grant agreement no. PCIG14-GA-2013-631104 ‘RHUM–RUM’ and by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement 639003 ‘DEEP TIME’). K.H. acknowledges support by The Alan Turing Institute under the EPSRC grant EP/N510129/1. We thank M. Wysession for sharing MACOMO data. This is IPGP contribution 4097.
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M.T. analysed the RHUM–RUM body-wave data, modelled their sensitivities and developed the 3D visualization techniques. K.H. analysed the P-diffracted data and computed sensitivity kernels. M.T. and K.H. jointly integrated the datasets into a global-scale tomographic model. K.S. designed the tomography studies and acted as the primary academic adviser to M.T. and K.H. G.B. and K.S. designed the RHUM–RUM experiment and led the acquisition of its data. All authors contributed to writing this manuscript.
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Peer review information Nature Geoscience thanks Alistair Boyce, Jeroen Ritsema and the other, anonymous, reviewer(s) for their contribution to the peer review of this work. Primary Handling Editor: Stefan Lachowycz.
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Extended data
Extended Data Fig. 1 East-west, thick-slice cross-section through Réunion and South Africa: comparison of our model (top) with other published tomography models.
View and 3-D visualisation are the same as in Figs. 2 and 3. Colour bar refers to dVp/Vp in % for P-velocity models and dVs/Vs for S-velocity models. Orange line on the CMB outlines the ‘Plume Generation Zone’ proposed by Burke et al. (ref. 4), a convenient visual guide for model comparison. Top row: three global P-wave tomographies, by Hosseini et al. 2019 (DETOX-P323); Obayashi et al. 2014 (GAP-P474); Houser et al. 2006 (HMSL-P0675). Middle and bottom row: 6 global S-velocity models, by Montelli et al. 2006 (PRI-S0570); Moulik et al. 2016 (S363ANI + M76); Ritsema et al. 2011 (S40RTS77); Auer 2014 (savani78), French and Romanowicz 2014 (SEMUCB-WM179), Lu and Grand 2016 (TX201580).
Extended Data Fig. 2 Tomography result and resolution test for two thin vertical plume conduits observed in the upper mantle slight southwest of La Réunion and offshore southernmost Madagascar.
Top row, left: Joint tomography model (ISC, Pdiff, RHUM-RUM P) at 200 km depth (map outcrop extending from 11ºS/45ºE to 26ºS/65ºE). Purple dots are RHUM-RUM OBS locations. The dominant feature is the sharp, SW-NE-trending contrast between slow (red) anomalies around the Réunion hotspot and its asthenospheric flows towards the Central Indian Ridge (which runs N-S along the easternmost edge of the map), versus the fast (blue) anomalies of the Mascarene basin’s old, thick lithosphere. Top right: Cross-section through the two slow conduits. Its location is marked in the previous map by a black line and coloured dots. (Due to their three-dimensional, moderately tilting geometries, the conduits are more clearly apparent as such in the 3-D thick-slice rendering of Fig. 3.) Second row: Cross-sections of resolution test input and output, consisting of two vertical columns of 150 km diameter in the observed locations, from the surface to 700 km depth. Rows 3-6: Resolution test input and output at 150, 300, 500 and 700 km depth. The Réunion column is more difficult to recover than the Madagascar column because it falls into a gap between OBS stations.
Extended Data Fig. 3 Whole mantle cross-section striking north-south through Réunion; the view is from the east.
Left panel shows a 2-D section; right panel shows the same section supplemented by low-velocity isosurfaces rendered in a 1000-km thick great-circle slice (shaded blue in the globe inset). Same rendering styles as in Fig. 2. This perspective shows most clearly the absence of Réunion plume tail into the lowermost mantle. Long-dashed purple line marks the interpreted cusp of the LLVP, as in Fig. 3. Bull’s-eye marks the area where the Kerguelen mid-mantle branch emerges toward the viewer.
Extended Data Fig. 4 Model comparison of seismically slow anomalies extending up to 500 km above the CMB (2400-2900 km depth).
The same 4 P-velocity and 6 S-velocity models are rendered as in Extended Data Fig. 1. Visualization style of five nested, slow velocity isosurfaces is the same as in Figs. 2, 3, and Extended Data Fig. 1. The orange line at the CMB outlines the Plume Generation Zone proposed by ref. 4. Southwestward away from the LLVP’s core (reddest area), in direction of 7 o’clock, DETOX-P3 and all six S-wave models show a bulge towards Bouvet hotspot. This observation is consistent with the existence of a fully developed CMB corridor towards Bouvet, which would be recovered only as such a vestigial bulge (see targeted resolution test Extended Data Fig. 5) by our tomography, and presumably by others.
Extended Data Fig. 5 Seismic resolvability of three slow corridors at the CMB.
Left: the resolution test input consists of three corridor-like, slow anomalies diverging from the LLVP centre under South Africa. Its geometries are idealised from lowermost mantle structure imaged by RROx-19. As in the tomography, corridors are ~700 km wide and 500 km ‘high’ above the CMB. The white column shows the location of Bouvet. Right: the results of this test confirm that the Southern Indian Ocean and East African corridors can be recovered well, while a Bouvet corridor would not be resolvable in our model, except for remnant southeastward bulging, away from the LLVP’s core. Such a bulge is actually observed by all S-wave tomographies in Extended Data Fig. 4, and by P-wave model DETOX-P3. Hence the presence of a fully developed CMB corridor towards Bouvet is consistent with currently available data.
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Tsekhmistrenko, M., Sigloch, K., Hosseini, K. et al. A tree of Indo-African mantle plumes imaged by seismic tomography. Nat. Geosci. 14, 612–619 (2021). https://doi.org/10.1038/s41561-021-00762-9
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DOI: https://doi.org/10.1038/s41561-021-00762-9
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