Combined Stable Isotope Trajectories for Water-Rock Interaction
- Location
- Taupo Volcanic Zone; New Zealand
- Conference
- New Zealand Geothermal Workshop
- Year
- 1981
- Session
- Geochemistry
- Language
- English
Full text
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Abstract
The 'mixed' model of water-rock interaction (1980 Workshop) is explained in detail. magnitude of the oxygen isotope shifts of their recharge water, different geothermal systems can be placed in an evolutionary series, from incipient (large shift of water) to mature (small shift of water). Isotopes of different chemical elements may be combined, to yield a stringent test of whether or not a given change in rock composition may be ascribed to interaction with water (L-shaped trajectories). For the acidic eruptives of the Taupo Volcanic Zone, available strontium oxygen isotope data practically rule out an origin by ti ng of greywacke basement.
Copyright 1981, University of Auckland. Readers who download papers from this site should honour the copyright of the original authors, and may not copy or distribute the work further without the permission of the original publisher.