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the claim

There are locations where the sea floor descends into the mantle of the Earth

the verdict
SUPPORTED
the evidence backs this
Recorded sources
6 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that there are locations where the sea floor descends into the mantle of the Earth?

Yes. Abundant geological and seismological evidence confirms that at subduction zones, tectonic plates descend from the sea floor into the Earth's mantle.

Verdict: SUPPORTED · 6 sources for, 0 against · Last checked

The analysis

The claim states that there are locations where the sea floor descends into the mantle of the Earth, which describes tectonic subduction zones. Multiple provided papers (e.g., [0], [1], [3], [5], [6], [11]) explicitly discuss oceanic plates and slabs descending into the Earth's mantle at various trenches and subduction zones around the globe. Therefore, the claim is strongly supported by the evidence.

Evidence for · 6
The Taitao Ophiolite-Granite Complex, Chile: Emplacement of Ridge-Trench Intersection Oceanic Lithosphere on Land and Origin of Calc-Alkaline I-Type Granites
2015
Discusses the subduction of an oceanic ridge beneath the South American plate.
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Shin, K., Anma, R., Nakano, T., Orihashi, Y., & Ike, S. (2015). The Taitao Ophiolite-Granite Complex, Chile: Emplacement of Ridge-Trench Intersection Oceanic Lithosphere on Land and Origin of Calc-Alkaline I-Type Granites. doi.org. https://doi.org/10.18814/EPIIUGS/2015/V38I4/82424

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More for · 5
Subduction Dynamics and Mantle Pressure: 2. Towards a Global Understanding of Slab Dip and Upper Mantle Circulation
2020
Investigates global subduction zones and the dynamics of slabs descending into the upper mantle.
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Holt, A. F. & Royden, L. H. (2020). Subduction Dynamics and Mantle Pressure: 2. Towards a Global Understanding of Slab Dip and Upper Mantle Circulation. doi.org. https://doi.org/10.1029/2019gc008771

Lithological structure of western Pacific lithosphere reconstructed from mantle xenoliths in a petit-spot volcano
2022
Examines the Pacific plate subducting into the Mariana Trench.
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Mikuni, K., Hirano, N., Akizawa, N., Yamamoto, J., Machida, S., Tamura, A., Hagiwara, Y., & Morishita, T. (2022). Lithological structure of western Pacific lithosphere reconstructed from mantle xenoliths in a petit-spot volcano. doi.org. https://doi.org/10.1186/s40645-022-00518-y

Catastrophic shear-removal of subcontinental lithospheric mantle beneath the Colorado Plateau by the subducted Farallon slab.
2019
Analyzes the subduction of the Farallon oceanic plate beneath North America.
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D, H. & RM, P. (2019). Catastrophic shear-removal of subcontinental lithospheric mantle beneath the Colorado Plateau by the subducted Farallon slab.. doi.org. https://doi.org/10.1038/s41598-019-44628-y

Geodynamic subduction models constrained by deep earthquakes beneath the Japan Sea and eastern China.
2020
Details Pacific plate subduction under the Japan Sea down to ~600 km.
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H, Č., J, Z., J, L., & CR, B. (2020). Geodynamic subduction models constrained by deep earthquakes beneath the Japan Sea and eastern China.. doi.org. https://doi.org/10.1038/s41598-020-62238-x

Seismic imaging of a basaltic Lesser Antilles slab from ancient tectonics.
2025
Describes lithospheric material descending through the upper mantle to the mantle transition zone at subduction zones.
Get citation
X, Y., Y, X., CA, R., N, H., S, G., A, R., & L, L. (2025). Seismic imaging of a basaltic Lesser Antilles slab from ancient tectonics.. doi.org. https://doi.org/10.1038/s41586-025-08754-0

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What does the evidence say?

The claim states that there are locations where the sea floor descends into the mantle of the Earth, which describes tectonic subduction zones. Multiple provided papers (e.g., [0], [1], [3], [5], [6], [11]) explicitly discuss oceanic plates and slabs descending into the Earth's mantle at various trenches and subduction zones around the globe. Therefore, the claim is strongly supported by the evidence.

Receipt History
first checked05 Aug 2026
judged → SUPPORTED · 8205 Aug 2026
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