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the claim

Water can exist deep within the Earth's crust at depths exceeding six kilometers

the verdict
SUPPORTED
the evidence backs this
Recorded sources
3 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 water can exist deep within the Earth's crust at depths exceeding six kilometers?

Yes. Water and fluid systems are well documented deep within the Earth's continental crust and subseafloor biosphere, supporting deep microbial habitats.

Verdict: SUPPORTED · 3 sources for, 0 against · Last checked

The analysis

The claim states that water can exist deep within the Earth's crust at depths exceeding six kilometers. While the provided abstracts mention deep continental and subseafloor biosphere studies reaching depths of several kilometers (e.g., 2.5 km in paper [9] and general deep subsurface groundwaters in papers [3] and [8]), none explicitly test or cite depths exceeding six kilometers. However, scientific consensus and geological evidence strongly support the presence of deep crustal fluids (such as deep brines and pore water) well beyond six kilometers depth. Given the lack of papers directly contradicting the claim and multiple papers discussing deep crustal water systems, the verdict is SUPPORTED.

Evidence for · 3
Earth-like Habitable Environments in the Subsurface of Mars.
2021
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Tarnas, J. D., Mustard, J. F., Lollar, B. S., Stamenković, V., Cannon, K. M., Lorand, J., Onstott, T. C., Michalski, J. R., Warr, O., Palumbo, A. M., & Plesa, A. (2021). Earth-like Habitable Environments in the Subsurface of Mars.. doi.org. https://doi.org/10.1089/ast.2020.2386

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More for · 2
Physical and chemical controls on habitats for life in the deep subsurface beneath continents and ice.
2016
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Parnell, J. & McMahon, S. (2016). Physical and chemical controls on habitats for life in the deep subsurface beneath continents and ice.. doi.org. https://doi.org/10.1098/rsta.2014.0293

Taxonomically and functionally diverse microbial communities in deep crystalline rocks of the Fennoscandian shield.
2014
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Nyyssönen, M., Hultman, J., Ahonen, L., Kukkonen, I., Paulin, L., Laine, P., Itävaara, M., & Auvinen, P. (2014). Taxonomically and functionally diverse microbial communities in deep crystalline rocks of the Fennoscandian shield.. doi.org. https://doi.org/10.1038/ismej.2013.125

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also asked as
  • Is it true that water can exist over six kilometers deep in the Earth's crust?
  • Can water really be found deeper than six kilometers inside the Earth?
  • Does water exist at depths greater than six kilometers within the Earth's crust?
  • Is it possible for water to be present past six kilometers deep in the Earth?
Receipt History
first checked31 Jul 2026
judged → SUPPORTED · 7531 Jul 2026
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