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Superplumes from the Core-Mantle Boundary to the Lithosphere: Implications for Heat Flux
Abstract
Three-dimensional modeling of upper-mantle anelastic structure reveals that thermal upwellings associated with the two superplumes, imaged by seismic elastic tomography at the base of the mantle, persist through the upper-mantle transition zone and are deflected horizontally beneath the lithosphere. This explains the unique transverse shear wave isotropy in the central Pacific. We infer that the two superplumes may play a major and stable role in supplying heat and horizontal flow to the low-viscosity asthenospheric channel, lubricating plate motions and feeding hot spots. We suggest that more heat may be carried through the core-mantle boundary than is accounted for by hot spot fluxes alone.
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Citations
Cites
Convection plumes in the lower mantle
MORGAN, W. J. (1971) · Nature · doi:10.1038/230042a0 · Cited by 2,565
Cited by
Maruyama, S., Santosh, M., & Zhao, D. (2007) · Gondwana Research · doi:10.1016/j.gr.2006.06.003 · Cited by 444
Santosh, M., Maruyama, S., & Yamamoto, S. (2009) · Gondwana Research · doi:10.1016/j.gr.2008.11.004 · Cited by 434
Archean geodynamics and the thermal evolution of Earth
Korenaga, J. (2006) · Geophysical Monograph Series · doi:10.1029/164gm03 · Cited by 356
Thermochemical structures within a spherical mantle: Superplumes or piles?
McNamara, A. K., & Zhong, S. (2004) · Journal of Geophysical Research: Solid Earth · doi:10.1029/2003jb002847 · Cited by 294
Metadata
- Authors
- Romanowicz, B., & Gung, Y.
- Venue
- Science
- Published
- 2002-04-19
- Volume
- 296
- Issue
- 5567
- Pages
- 513-516
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W1965567608
- Cited by
- 211
- References
- 1
- FWCI
- 15.07
- Type
- journal article
- Language
- en
- Open access
- closed
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- Romanowicz, B., & Gung, Y. (2002). Superplumes from the Core-Mantle Boundary to the Lithosphere: Implications for Heat Flux. Science. https://doi.org/10.1126/science.1069404
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
