Effect of temperature, pressure, and chemical compositions of fluids on the rates of olivine and peridotite serpentinization
Year: 2025
Type: conference-abstract
Abstract: Serpentinization, a low-temperature hydrothermal alteration of ultramafic rocks, strongly influences the physical and chemical properties of the oceanic lithosphere. Complete serpentinization significantly decreases the density, yield strength, and seismic velocities of ultramafic rocks, which may result in a great increase in volumes. Serpentinites are enriched in H2O, up to 13.5 wt%, and they contain much higher amounts of volatiles (such as carbon, sulfur, and nitrogen) compared to olivine. In particular, serpentine minerals can be stable at great depths, >150 km, suggesting that serpentinization may play an important role for the transferring of H2O and other volatiles into great depths in subduction zones.In spite of the significance of serpentinization, the proportions of serpentine in subduction zones still remain poorly constrained. Serpentinization kinetics are important parameters for quantifying the percentage of serpentine in subduction zones. The kinetic data obtained by Martin and Fyfe (1970) have been used to estimate the proportions of serpentine,
Authors: Ruifang Huang, Weidong Sun, Wenwen Li, Xiuqi Shang
Language: English
Subfield: Geophysics
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: gold
OpenAlex ID: W4408439588