Articles | Volume 11, issue 4
Solid Earth, 11, 1571–1595, 2020

Special issue: Faults, fractures, and fluid flow in the shallow crust

Solid Earth, 11, 1571–1595, 2020

Research article 26 Aug 2020

Research article | 26 Aug 2020

On the morphology and amplitude of 2D and 3D thermal anomalies induced by buoyancy-driven flow within and around fault zones

Laurent Guillou-Frottier et al.


Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Laurent Guillou-Frottier on behalf of the Authors (24 Jun 2020)  Author's response    Manuscript
ED: Publish as is (14 Jul 2020) by Fabrizio Balsamo
ED: Publish as is (23 Jul 2020) by CharLotte Krawczyk(Executive Editor)
Short summary
In the first kilometers of the subsurface, temperature anomalies due to heat conduction rarely exceed 20–30°C. However, when deep hot fluids in the shallow crust flow upwards, for example through permeable fault zones, hydrothermal convection can form high-temperature geothermal reservoirs. Numerical modeling of hydrothermal convection shows that vertical fault zones may host funnel-shaped, kilometer-sized geothermal reservoirs whose exploitation would not need drilling at depths below 2–3 km.