Video Discription |
A major discovery was recently made were far ranging implications for the field of geology. As, the remains of an ancient planet were found deep in Earth's lower mantle, and this seems to be linked to not only mantle plumes and flood basalts but also may have been the missing link necessary to initiate plate tectonics. This video will discuss this discovery involving the remains of a planet known as Theia.
Thumbnail Photo Credit: U.S. Geological Survey, Hawaiian Volcano Observatory, Public Domain, https://www.usgs.gov/media/images/kilauea-volcano-lava-flowing-around-channel-islands. This image was overlaid with text, then was overlaid with GeologyHub made graphics (the image border & the GeologyHub logo).
Note: I personally did not make this discovery, but rather a student at Arizona State University did!
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Sources/Citations:
[1] Ward, J., Nowacki, A., & Rost, S. (2020). Lateral velocity gradients in the African lower mantle inferred from slowness space observations of multipathing. Geochemistry, Geophysics, Geosystems, 21, e2020GC009025. https://doi.org/10.1029/2020GC009025, CC BY 4.0.
[2] Bono, Richard & Tarduno, John & Bunge, Hans-peter. (2019). Hotspot motion caused the Hawaiian-Emperor Bend and LLSVPs are not fixed. Nature Communications. 10. 10.1038/s41467-019-11314-6. CC BY 4.0.
[3] Yuan, Q., Li, M., Desch, S. J., and Ko, B., “Giant Impact Origin for the Large Low Shear Velocity Provinces”, vol. 2020, 2020.
[4] Andersen, J., Göğüş, O.H., Pysklywec, R.N. et al. Symptomatic lithospheric drips triggering fast topographic rise and crustal deformation in the Central Andes. Commun Earth Environ 3, 150 (2022). https://doi.org/10.1038/s43247-022-00470-1, CC BY 4.0
[5] Yuan, Q., Li, M., "Dynamics in Earth’s Mantle: Constraints from Planetary Scale to Nanoscale", Thesis, 2022, Arizona State University
[6] U.S. Geological Survey
0:00 A Major Discovery
0:23 LLSVPs
0:43 Moon Formation
1:21 Location of LLSVPs
1:58 Speculation
2:17 Link to Mantle Plumes?
2:44 Plate Tectonics Link?
3:29 A Mars Problem |