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Tokaanu Field

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Journal Article
Journal: PALAIOS
Published: 01 February 2002
PALAIOS (2002) 17 (1): 84–103.
...BRIAN JONES; ROBIN W. RENAUT; MICHAEL R. ROSEN; KEVIN M. ANSDELL Abstract Coniform stromatolites are found in several sites in the Tokaanu and Whakarewarewa geothermal areas of North Island, New Zealand. At Tokaanu, silicification of these stromatolites is taking place in Kirihoro, a shallow hot...
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Journal Article
Published: 26 November 2003
Canadian Journal of Earth Sciences (2003) 40 (11): 1643–1667.
...B.W. Mountain; L.G. Benning; J.A. Boerema Abstract To study the rate of growth of sinters in New Zealand hot springs, field experiments were conducted in seven geothermal areas. At Wairakei, fan-shaped subaqueous deposits of amorphous silica grow rapidly (350 kg a –1 m –2 of drain wall...
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Journal Article
Journal: PALAIOS
Published: 01 April 2003
PALAIOS (2003) 18 (2): 87–109.
... decrease in temperature. Therefore, caution must be exercised when using modern analogs in the interpretation of ancient sinters, especially with respect to their fabrics and silicified microorganisms. The geyser at Tokaanu was studied and sampled in April 2001 and February 2002. Field descriptions...
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Image
<b>Field</b> photographs of vegetation on hot spring discharge aprons. (A) Grass g...
Published: 27 November 2003
Fig. 7. Field photographs of vegetation on hot spring discharge aprons. (A) Grass growing along margins of discharge apron below geyser vent in Tokaanu geothermal area (for location, see Jones et al. 2003 ). Grass remains viable despite the fact that its roots and basal parts of stems
Image
<b>Field</b> photographs showing tree branches in spring pools. (A, B) Examples of...
Published: 27 November 2003
Fig. 13. Field photographs showing tree branches in spring pools. (A, B) Examples of tree branches in Iodine Pool, Waimangu (water temperature T = 88 °C, pH 8.9) and Hoani, Tokaanu ( T = 62.6 °C, pH 7.0), coated with opal-A precipitates. Wood inside branches has not been replaced. Branches up
Journal Article
Journal: Geology
Published: 28 February 2019
Geology (2019) 47 (4): 330–334.
...Silvina Slagter; Martin Reich; Carolina Munoz-Saez; John Southon; Diego Morata; Fernando Barra; Jian Gong; J.R. Skok Abstract Silica sinter deposits overlying geothermal fields are reliable records of environmental, geochemical, and biological changes through time. Therefore, determining...
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Journal Article
Journal: GSA Bulletin
Published: 23 June 2017
GSA Bulletin (2017) 129 (9-10): 1085–1099.
... lying parallel to and overlapping the graben axis. This study quantifies the geological extension at the Tongariro graben (7 ± 1.2 mm/yr since 20 ka) and the relative contributions from tectonic faulting and dike intrusion. Field observations were used to interpret fault geometry and activity...
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Journal Article
Published: 07 November 2003
Canadian Journal of Earth Sciences (2003) 40 (11): 1679–1696.
... outflow channels and pools, which record distinctive macrotextures and microtextures along a thermal gradient. Sinters from four geothermal fields, Orakei Korako, northern Waiotapu, Te Kopia, and Umukuri, within the Taupo Volcanic Zone, New Zealand, were sampled from two common microbe-rich microfacies...
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Image
Map of the Taupo Volcanic Zone with the general near-surface outlines of ge...
Published: 01 March 2017
Fig. 1. Map of the Taupo Volcanic Zone with the general near-surface outlines of geothermal fields as defined by anomalously low electrical resistivity (<25 Ωm; Bibby et al., 1995) . The boundaries of the old and young Taupo Volcanic Zone and caldera locations are from Wilson et al. (1986
Journal Article
Published: 27 November 2003
Canadian Journal of Earth Sciences (2003) 40 (11): 1549–1569.
...Fig. 7. Field photographs of vegetation on hot spring discharge aprons. (A) Grass growing along margins of discharge apron below geyser vent in Tokaanu geothermal area (for location, see Jones et al. 2003 ). Grass remains viable despite the fact that its roots and basal parts of stems...
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Journal Article
Published: 01 December 1994
Bulletin of the Seismological Society of America (1994) 84 (6): 1739–1753.
...: system description and field trials , Bull. Seism. Soc. Am. 81 , 1380 - 1390 . Ishida M. Kanamori H. (1978) . The foreshock activity of the 1971 San Fernando earthquake, California , Bull. Seism. Soc. Am. 68 , 1265 - 1279 . Ishida M. Kanamori H...
Journal Article
Journal: PALAIOS
Published: 01 December 2001
PALAIOS (2001) 16 (6): 580–592.
..., received a thin gold coating before being examined on a JEOL 6301F Field Emission Scanning Electron Microscope (SEM) with an accelerating voltage of 1.5–2.5 kV. Samples were examined immediately after coating. The silicified microbes used in this study, found in sinter deposits at Tokaanu, Ohaaki...
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Journal Article
Journal: Geophysics
Published: 05 October 2010
Geophysics (2010) 75 (5): B187–B195.
.... Bibby H. M. Bromley C. J. Caldwell T. G. Bennie S. L. , 2002 , Appraisal of the Tokaanu-Waihi geothermal field and its relationship with the Tongariro geothermal field, New Zealand : Geothermics , 31 , 45 – 68 . Romo J. M. Flores C. Vega R. V'azquez R. Pérez...
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Journal Article
Published: 15 May 2009
Geological Magazine (2009) 146 (4): 617–622.
... of microbial and other palaeoenvironmentally significant fabrics. † Author for correspondence: ka.campbell@auckland.ac.nz 20 12 2008 19 03 2009 Based on initial field assessment, the eastern portion of the Main Outcrop (0.3 km 2 ) was found to be particularly well exposed in a broad...
Journal Article
Journal: Economic Geology
Published: 01 March 2017
Economic Geology (2017) 112 (2): 319–346.
...Fig. 1. Map of the Taupo Volcanic Zone with the general near-surface outlines of geothermal fields as defined by anomalously low electrical resistivity (<25 Ωm; Bibby et al., 1995) . The boundaries of the old and young Taupo Volcanic Zone and caldera locations are from Wilson et al. (1986...
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Journal Article
Published: 25 November 2003
Canadian Journal of Earth Sciences (2003) 40 (11): 1585–1610.
... area showing location of geysers in Waikite Geyser complex and along Te Puia Fault. Modified from Lloyd ( 1975 ). Fig. 3. Field photographs of geyser vents in Whakarewarewa geothermal area. (A) South part of Waikite Geyser complex with vent of geyser #124 in foreground and dormant Waikite...
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Series: Special Publications of the Society of Economic Geologists
Published: 01 January 2005
DOI: 10.5382/SP.10.09
EISBN: 9781629490342
...) . F ig . 1. North Island of New Zealand with outline of the Hikurangi trough and the Taupo Volcanic Zone (TVZ). Sample locations (CL = crater lake; HS = hot spring; GS = geothermal power station; MP = mud pool): Taupo Volcanic Zone: 1 = White Island, CL; 2 = Tokaanu, HS; 3 = Mokai, GS; 4 = Wairakei...
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