Geothermal energy involves transfer of
heat from great depth to the surface via the flow of hot
fluid, which is stored in subsurface reservoirs. This hot
fluid also transports metals to produce rich mineral
deposits containing gold and silver. These systems occur in a
diversity of geological settings where there is anomalous heat
flow.
With 35 years of experience,
I evaluate and assess how and where geothermal and
mineral resources occur. I specialize in analyzing and
interpreting chemical, mineralogical,
hydrological, lithological, geophysical, and other
geoscientific data associated with hot springs, wells,
volcanoes and gold-silver deposits. I also deliver short
courses (1-5 days), and I lead field excursions through the
Taupo Volcanic Zone and Coromandel Peninsula.
I split my time
between Auckland, New Zealand and Salt Lake City, Utah
(EGI, U Utah). I am the former Director of the Geothermal
Institute, University of Auckland. I have worked on many
geothermal systems and gold-silver deposits in New Zealand and
around the Pacific Rim. I have published over 70
scientific articles on a wide range of topics dealing with
geothermal systems, hot springs, hydrothermal minerals, and
the formation of epithermal precious metal deposits.
I provide the best geoscientific advice
and interpretations of rocks, minerals, and fluids in disovery
and exploitation of geothermal and mineral
resources.
