scholarly journals The Geology, Mineralogy and Geothermometry of the Broadlands Geothermal Field, Taupo Volcanic Zone, New Zealand

2021 ◽  
Author(s):  
◽  
Patrick Richard Lee Browne
Keyword(s):  
Geothermal Field ◽  
Subsurface Water ◽  
Taupo Volcanic Zone ◽  
Volcanic Zone ◽  
Rock Permeability ◽  
High Temperature Water ◽  
Resistivity Survey ◽  
Geothermal Power Station ◽  
Temperature Water ◽  
Waikato River

<p>Following the commissioning of the Wairakei geothermal power station, several areas in the Rotorua-Taupo Volcanic Zone were investigated for their power-producing potential. One of these was the Broadlands district, where a resistivity survey had located a sizeable area of subsurface water. The first hole, east of the Waikato River (Fig. 2), was drilled in late 1965, but although the temperature at hole bottom is 278 degrees, rock permeability is low and the bore is a poor steam producer. However, further drillholes (Br 2, 3 and 4) in the Ohaki area tapped good supplies of high temperature water and prompted a fullscale scientific and exploratory drilling programme. This was completed in mid-1971 after 25 holes had been drilled and it was estimated that the field could produce about 150 megawatts of electricity.</p>

scholarly journals The Geology, Mineralogy and Geothermometry of the Broadlands Geothermal Field, Taupo Volcanic Zone, New Zealand

2021 ◽  
Author(s):  
◽  
Patrick Richard Lee Browne
Keyword(s):  
Geothermal Field ◽  
Subsurface Water ◽  
Taupo Volcanic Zone ◽  
Volcanic Zone ◽  
Rock Permeability ◽  
High Temperature Water ◽  
Resistivity Survey ◽  
Geothermal Power Station ◽  
Temperature Water ◽  
Waikato River

<p>Following the commissioning of the Wairakei geothermal power station, several areas in the Rotorua-Taupo Volcanic Zone were investigated for their power-producing potential. One of these was the Broadlands district, where a resistivity survey had located a sizeable area of subsurface water. The first hole, east of the Waikato River (Fig. 2), was drilled in late 1965, but although the temperature at hole bottom is 278 degrees, rock permeability is low and the bore is a poor steam producer. However, further drillholes (Br 2, 3 and 4) in the Ohaki area tapped good supplies of high temperature water and prompted a fullscale scientific and exploratory drilling programme. This was completed in mid-1971 after 25 holes had been drilled and it was estimated that the field could produce about 150 megawatts of electricity.</p>

scholarly journals Mercury and arsenic in trout from the Taupo Volcanic Zone and Waikato River, North Island, New Zealand

1995 ◽  
Vol 7 (1) ◽  
pp. 27-32 ◽  
Author(s):  
Brett H. Robinson ◽  
Robert R. Brooks ◽  
Heather A. Outred ◽  
John H. Kirkman
Keyword(s):  
New Zealand ◽  
Taupo Volcanic Zone ◽  
Volcanic Zone ◽  
Waikato River

scholarly journals Matrix permeability of reservoir rocks, Ngatamariki geothermal field, Taupo Volcanic Zone, New Zealand

2018 ◽  
Vol 6 (1) ◽  
Author(s):  
J. L. Cant ◽  
P. A. Siratovich ◽  
J. W. Cole ◽  
M. C. Villeneuve ◽  
B. M. Kennedy
Keyword(s):  
New Zealand ◽  
Geothermal Field ◽  
Taupo Volcanic Zone ◽  
Volcanic Zone ◽  
Reservoir Rocks ◽  
Matrix Permeability

Tectonic Controls on Taupo Volcanic Zone Geothermal Expression: Insights From Te Mihi, Wairakei Geothermal Field

Tectonics ◽  
2019 ◽  
Vol 38 (8) ◽  
pp. 3011-3033 ◽  
Author(s):  
D. D. McNamara ◽  
S. D. Milicich ◽  
C. Massiot ◽  
P. Villamor ◽  
K. McLean ◽  
...  
Keyword(s):  
Geothermal Field ◽  
Taupo Volcanic Zone ◽  
Volcanic Zone

A microearthquake survey at the Ngawha geothermal field, New Zealand

Geophysics ◽  
1981 ◽  
Vol 46 (10) ◽  
pp. 1467-1468 ◽  
Author(s):  
Russell Robinson
Keyword(s):  
New Zealand ◽  
Hot Springs ◽  
Geothermal Field ◽  
Hot Water ◽  
Taupo Volcanic Zone ◽  
Thermal Activity ◽  
Volcanic Zone ◽  
Depth Level ◽  
Geothermal Exploration ◽  
The North

A twenty day microearthquake survey of the Ngawha geothermal field, New Zealand, was undertaken in order to establish the level of preproduction seismicity and to test the usefulness of such surveys in geothermal exploration. The Ngawha geothermal field, in the far northwest of the North Island (Northland) is associated with a region of Quaternary basaltic volcanism. It is not a part of the much more extensive Taupo volcanic zone in the central North Island, site of the well‐known Wairakei geothermal field, among others. Although surface thermal activity at Ngawha is limited to a few relatively small hot springs, resistivity surveys have outlined a [Formula: see text] area of hot water at the 1-km depth level (Macdonald et al. , 1977). Test bores to that depth have encountered temperatures of up to 250 °C within Mesozoic graywacke. Overlying the graywacke is about 500 m of Cenozoic claystone and siltstone which forms an impermeable cap.

scholarly journals Field-Based Tests of Geochemical Modeling Codes: New Zealand Hydrothermal Systems

1993 ◽  
Vol 333 ◽  
Author(s):  
Carol J. Bruton ◽  
William E. Glassley ◽  
William L. Bourcier
Keyword(s):  
New Zealand ◽  
Nuclear Waste ◽  
Kinetic Data ◽  
Geochemical Modeling ◽  
Geothermal Field ◽  
Hydrothermal Systems ◽  
Taupo Volcanic Zone ◽  
Volcanic Zone ◽  
Mineral Assemblages ◽  
Modeling Code

ABSTRACTHydrothermal systems in the Taupo Volcanic Zone, North Island, New Zealand are being used as field-based modeling exercises for the EQ3/6 geochemical modeling code package. Comparisons of the observed state and evolution of the hydrothermal systems with predictions of fluid-solid equilibria made using geochemical modeling codes will determine how the codes can be used to predict the chemical and mineralogical response of the environment to nuclear waste emplacement. Field-based exercises allow us to test the models on time scales unattainable in the laboratory.Preliminary predictions of mineral assemblages in equilibrium with fluids sampled from wells in the Wairakei and Kawerau geothermal field suggest that affinity-temperature diagrams must be used in conjunction with EQ6 to minimize the effect of uncertainties in thermodynamic and kinetic data on code predictions.

U–Pb dating of zircon in hydrothermally altered rocks of the Kawerau Geothermal Field, Taupo Volcanic Zone, New Zealand

2013 ◽  
Vol 253 ◽  
pp. 97-113 ◽  
Author(s):  
S.D. Milicich ◽  
C.J.N. Wilson ◽  
G. Bignall ◽  
B. Pezaro ◽  
B.L.A. Charlier ◽  
...  
Keyword(s):  
New Zealand ◽  
Geothermal Field ◽  
Taupo Volcanic Zone ◽  
Volcanic Zone

3D Anatomy of a 60-year-old siliceous hot spring deposit at Hipaua-Waihi-Tokaanu geothermal field, Taupo Volcanic Zone, New Zealand

2020 ◽  
Vol 402 ◽  
pp. 105652 ◽  
Author(s):  
Kathleen A. Campbell ◽  
Kirsty Nicholson ◽  
Bridget Y. Lynne ◽  
Patrick R.L. Browne
Keyword(s):  
New Zealand ◽  
Hot Spring ◽  
Geothermal Field ◽  
Taupo Volcanic Zone ◽  
Volcanic Zone ◽  
3D Anatomy
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