Experimental approach for understanding non-equilibrium granite -fluid interactions under supercritical hydrothermal conditions

N. Tsuchiya, K. Takagi, N. Hirano, G. Bignall

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

Water-rock interaction under sub- and supercritical hydrothermal flow conditions has been carried out by using a flow-through type autoclave with a temperature gradient in order to predict the dissolution and precipitation behavior of granite. Reaction temperature ranges from 325 to 505°C. Dissolution of granite increased with temperature in the subcritical region (325-380°C) and decreased in the supercritical region (400-505°C).A precipitation dominant zone was recognized within the supercritical region. Elsewhere, quartz was the main dissolved mineral, and no distinctive dissolution of other minerals was observed. Depending on conditions of temperature and pressure, dissolution and precipitation phenomena in granite could be drastically changed due to properties of the fluid such as 'liquid-like' and/or 'vapor-like' regions under supercritical condition.

Original languageEnglish
Title of host publicationWater-Rock Interaction - Proceedings of the 12th International Symposium on Water-Rock Interaction, WRI-12
Pages391-394
Number of pages4
Publication statusPublished - 2007 Dec 1
Event12th International Symposium on Water-Rock Interaction, WRI-12 - Kunming, China
Duration: 2007 Jul 312007 Aug 4

Publication series

NameWater-Rock Interaction - Proceedings of the 12th International Symposium on Water-Rock Interaction, WRI-12
Volume1

Other

Other12th International Symposium on Water-Rock Interaction, WRI-12
CountryChina
CityKunming
Period07/7/3107/8/4

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Water Science and Technology

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  • Cite this

    Tsuchiya, N., Takagi, K., Hirano, N., & Bignall, G. (2007). Experimental approach for understanding non-equilibrium granite -fluid interactions under supercritical hydrothermal conditions. In Water-Rock Interaction - Proceedings of the 12th International Symposium on Water-Rock Interaction, WRI-12 (pp. 391-394). (Water-Rock Interaction - Proceedings of the 12th International Symposium on Water-Rock Interaction, WRI-12; Vol. 1).