Hydrothermal processes are geochemical and geological phenomena driven by the circulation of heated aqueous fluids within the Earth’s crust, typically associated with magmatic intrusions, mid-ocean ridges, and sedimentary basins. These fluids, often saline and metal-bearing, interact with surrounding rocks, causing mineral dissolution, transport, and precipitation, which leads to metasomatism, alteration halos, and the formation of hydrothermal ore deposits (e.g., sulfides, quartz veins). Thermodynamic and kinetic controls, including temperature, pressure, fluid composition, and redox conditions, govern mineral stability and reaction pathways. Hydrothermal systems are key to understanding crustal heat and mass transfer, fluid–rock interaction, and elemental cycling in lithospheric environments.
An international research team led by the GEOMAR Helmholtz Center for Ocean Research Kiel has discovered a globally unique system on the seabed off the coast of Papua New Guinea. During their expedition aboard the research ...
Earth Sciences
Sep 19, 2025
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140
Hydrogen is the most abundant element in the solar system. As a source of clean energy, hydrogen is well-suited for sustainable development, and Earth is a natural hydrogen factory. However, most hydrogen vents reported to ...
Earth Sciences
Sep 5, 2025
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424
Hydrogen-producing hydrothermal systems in the deep ocean are rare but critical to understanding Earth's internal processes and the conditions that may have fostered life's origins. Now scientists from the Institute of Oceanology ...
Earth Sciences
Aug 12, 2025
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222
Understanding where and in what quantities essential elements for life have existed on Earth's surface helps explain the origin and evolution of life. Phosphorus is one such element, forming the backbone of DNA, RNA, and ...
Earth Sciences
Jul 3, 2025
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69
A new thermal vent spewing steam in the air at Yellowstone National Park is gaining attention, mainly because it's visible from a road rather than any significant change in the park famous for its thousands of geysers, hot ...
Environment
Mar 24, 2025
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41
New Curtin University-led research has uncovered what may be the oldest direct evidence of ancient hot water activity on Mars, revealing the planet may have been habitable at some point in its past.
Astrobiology
Nov 22, 2024
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