Geochemical Structure of TVZ Hydrothermal Systems
1992. "Geochemical Structure of TVZ Hydrothermal Systems", Active and Extinct Hydrothermal Systems of the North Island, New Zealand, Stuart F. Simmons, Patrick R.L. Browne, Robert L. Brathwaite
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A fundamental link exists between chemical and hydrologic processes that occur in a hydrothermal system, with meteoric recharge, entry of magmatic volatiles, water-rock interaction and boiling-mixing being the main features influencing the composition and distribution of hydrothermal fluids and minerals. A comprehensive review of TVZ hydrothermal systems is given by Hedenquist (1986) and Henley and Hedenquist (1986). Here, we briefly describe the characteristics and processes that form fluids, minerals and precious metal deposits in some active hydrothermal systems.