Progressive Devolitization of Greywacke from Sub-Critical to Supercritical Conditions
- Key words
- Sulfur, chlorine, flow-through experiments, water-rock interactions, greywacke.
- Conference
- New Zealand Geothermal Workshop
- Year
- 2016
- Session
- 1.1
- Language
- English
- Paper number
- 64
Full text
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Abstract
The source of volatiles such as Cl, S and CO2 in geothermal systems is an object of frequent debate. Early experiments concluded that they could be derived solely from water-rock interaction. Others infer that some component of magmatic input is necessary. We have conducted experiments to measure the volatiles released during progressive heating of a greywacke typical of the basement rock of the Taupo Volcanic Zone.
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