hydrothermal


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hydrothermal

[‚hī·drə′thər·məl]
(geology)
Of or pertaining to heated water, to its action, or to the products of such action.
References in periodicals archive ?
The mix of minerals identified from the spectrometer data, including serpentine, talc and carbonate, and the shape and texture of the thick bedrock layers, led to identifying possible seafloor hydrothermal deposits.
7 billion years for the Martian deposits attributed to seafloor hydrothermal activity.
On follow-up, the ObGyn provided options of robotic hysterectomy or operative hysteroscopy with hydrothermal ablation.
Calcium phosphates such as hydroxyapatite and tricalcium phosphate can be readily fabricated synthetically in the laboratory from different reactions, there are different routes for synthesis instead of using minerals present in nature, the most prominent are the solid-state synthesis, wet or dry method, hydrothermal method, solgel methods, thermal processing in the case of tricalcium phosphate pass from a to P in two ways.
Enter WHOI geophysicist Rob Sohn, who has spent his career studying hydrothermal vents that typically form over magma chambers beneath the seafloor.
By sampling a much broader area, he and Furnes determined that the superheating effects of hydrothermal activity had been strictly local.
Two methods of quartz etching and dissolution were applied: (1) autoclave temperature and pressure experiments of hydrothermal conditions of dissolution with distilled water, and (2) chemical etching of quartz with hydrofluoric acid.
Scientists analysing data from the Cassini spacecraft, which has been exploring Saturn and its moons since 2004, have found microscopic grains of rock bearing the hallmarks of hydrothermal activity.
Zirconia is also known to gradually weaken over time as the crystal structure changes from a tetragonal phase to a monoclinic one when exposed to hydrothermal condition.
Scientists onboard the vessel discovered two seafloor hydrothermal areas and four hydrothermal anomaly areas, and deepened understanding about the overall area.
They present nine chapters discussing: the molecular-scale fundament of geothermal fluid thermodynamics, thermodynamics of aqueous species at high temperatures and pressures (equations of state and transport theory), the carbonate system as an example of mineral solubility and aqueous speciation in hydrothermal conditions to 300 degrees Celsius, thermodynamic modeling of fluid-rock interaction at mid-crustal to upper-mantle conditions, speciation and transport of metals and metalloids in geological vapors, solution calorimetry under hydrothermal conditions, structure and thermodynamics of subduction zone fluids from spectroscopic studies, and thermodynamics of organic transformations in hydrothermal fluids.