Mega‐Depressions on the Cocos Ridge: Links Between Volcanism, Faults, Hydrothermal Circulation, and Dissolution [PDF]
Geochemistry, Geophysics, Geosystems, 2022 High‐resolution bathymetry and three‐dimensional seismic data along the Cocos Ridge reveal a 245 km2 field of ∼1–4 km in diameter seafloor depressions. The seafloor depressions are part of a two‐tiered honeycomb pattern.
Jared W. Kluesner +6 more
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Modes of crustal accretion and their implications for hydrothermal circulation [PDF]
Geophysical Research Letters, 2016 AbstractHydrothermal convection at mid‐ocean ridges links the ocean's long‐term chemical evolution to solid earth processes, forms hydrothermal ore deposits, and sustains the unique chemosynthetic vent fauna. Yet the depth extent of hydrothermal cooling and the inseparably connected question of how the lower crust accretes remain poorly constrained ...
Theissen-Krah, Sonja +2 more
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Geophysical Research Letters, 2019 Brothers volcano is the most hydrothermally active volcano along the Kermadec arc, with distinct hydrothermal fields located on the caldera walls and on the postcollapse volcanic cones.
F. Caratori Tontini +3 more
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Hydrothermal circulation and the thermal structure of shallow subduction zones [PDF]
Geosphere, 2017 Hydrothermal circulation within oceanic basement can have a profound influence on temperatures in the upper crust, including those close to the subduction thrust and in the overlying plate.
Glenn A. Spinelli +2 more
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Two-dimensional THM modelling of the large scale natural hydrothermal circulation at Soultz-sous-Forêts [PDF]
Geothermal Energy, 2014 BackgroundA two-dimensional numerical model is developed for the Soultz-sous-Forêts reservoir from an idealized cross-section containing six homogeneous horizontal layers.
Vincent Magnenet +3 more
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The subseafloor crustal biosphere: Ocean’s hidden biogeochemical reactor [PDF]
Frontiers in MicrobiologyUnderlying the thick sediment layer in ocean basins, the flow of seawater through the cracked and porous upper igneous crust supports a previously hidden and largely unexplored active subsurface microbial biome.
Alberto Robador
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Ar-Ar dating for hydrothermal quartz from the 2.4 Ga Ongeluk Formation, South Africa: implications for seafloor hydrothermal circulation. [PDF]
R Soc Open Sci, 2018 Saito T +8 more
europepmc +2 more sources
A fault‐driven circulation model for the Lost City Hydrothermal Field [PDF]
Geophysical Research Letters, 2017 AbstractThe Lost City Hydrothermal Field on the Atlantis Massif is an off‐axis hydrothermal system, hosted in serpentinized ultramafic and metagabbroic rocks, that discharges through high‐permeability faults and fractures. High‐pH fluids vent through carbonate chimneys with temperatures ranging between 24°C and 91°C, and vent fluid geochemistry ...
R. Lowell
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Deep and High-temperature Hydrothermal Circulation in the Oman Ophiolite--Petrological and Isotopic Evidence [PDF]
Journal of Petrology, 2004 A systematic search for evidence of high-temperature hydrous alteration within the gabbros of the Samail ophiolite (Oman) shows that most of the gabbros have been affected by successive stages of alteration, starting above 975°C and ending below 500°C. Sr and O isotopic analyses provide constraints on the nature and origin of the fluids associated with
Delphine Bosch
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The hydrothermal system of Bagni San Filippo (Italy): fluids circulation and CO2 degassing
, 2020 Bagni San Filippo area is characterized by the discharge of thermal waters and deeply produced CO2-rich gases both from vents and soil diffuse degassing.
Maria Letizia Amadori +9 more
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