hydrothermal solution

hydrothermal solution

[‚hī·drə′thər·məl sə′lü·shən]
(geology)
Hot, residual watery fluids derived from magmas during the later stages of their crystallization and commonly containing large amounts of dissolved metals which are deposited as ore veins in fissures along which the solutions often move.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
According to published literatures [113, 114], sulphide-bearing hydrothermal solution exhaled at the initial stages of hydrothermal activity under high temperatures, followed by exhalation of the silica-enriched hydrothermal waters, at a lower temperature with low dissolving capacity.
Fe and Mn are characteristically fractionated on precipitation from a hydrothermal solution, producing high or low Mn/Fe rations in exhalative sediments [13].
This alteration style is very common in hematite ores and indicates the activity of a volatile-rich hydrothermal solution [6].
In this study, we found the presence of isopropanol in the hydrothermal solution makes {001} facets exposed Ti[O.sub.2] films have sheet-like morphology, which possess higher activity and stability towards removal of organic contaminants as compared to Ti[O.sub.2] microspheres with exposure of {001} facets.
Then, the samples were placed in such a mixed hydrothermal solution at 85[degrees]C for 1 hour on a hot plate.
By plotting of the major and trace elements data in these diagrams, it is concluded that the hydrothermal solution is responsible for the formation of the studied ores.
According to cathodoluminescence investigations [ILLUSTRATION FOR FIGURE 5B AND 5D OMITTED], crystallization of the framework of the aggregates (i.e., the first two steps of their formation) may have occurred from an undersaturated hydrothermal solution in a relatively slow, steady process.
Driesner, "Hydrothermal solution structure: experiments and computer simulations," in Aqueous Systems at Elevated Temperatures and Pressures: Physical Chemistry in Water, Steam and Hydrothermal Solutions, D.
The behavior of major and trace elements in the mineralized diorites, suggests that the hydrothermal solution responsible for the copper mineralization has effected, to a very extent, the diorites of the area.
Kim et al., "Unique chemistry of the hydrothermal solution in the mid-Okinawa Trough Backarc Basin," Geophysical Research Letters, vol.
For example, rutile solubility in F-bearing hydrothermal solutions generally rises with increasing temperature [30, 31], promoting the formation of F-bearing Ti complexes.