CO 2 flux geothermometer for geothermal exploration
A new geothermometer (TCO2 Flux) is proposed based on soil diffuse CO2 flux and shallow temperature measurements made on areas of steam heated, thermally altered ground above active geothermal systems. This CO2 flux geothermometer is based on a previously reported CO2 geothermometer that was designe...
Published in: | Geochimica et Cosmochimica Acta |
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ftingv:oai:www.earth-prints.org:2122/11064 2023-05-15T16:51:02+02:00 CO 2 flux geothermometer for geothermal exploration Harvey, M. C. Rowland, J. V. Chiodini, Giovanni Rissmann, C. F. Bloomberg, S. Fridriksson, T. Oladottir, A. A. #PLACEHOLDER_PARENT_METADATA_VALUE# Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Bologna, Bologna, Italia 2017 http://hdl.handle.net/2122/11064 https://doi.org/10.1016/j.gca.2017.06.025 en eng Geochimica et Cosmochimica Acta /213 (2017) http://hdl.handle.net/2122/11064 doi:10.1016/j.gca.2017.06.025 restricted article 2017 ftingv https://doi.org/10.1016/j.gca.2017.06.025 2022-07-29T06:07:18Z A new geothermometer (TCO2 Flux) is proposed based on soil diffuse CO2 flux and shallow temperature measurements made on areas of steam heated, thermally altered ground above active geothermal systems. This CO2 flux geothermometer is based on a previously reported CO2 geothermometer that was designed for use with fumarole analysis. The new geothermometer provides a valuable additional exploration tool for estimating subsurface temperatures in high-temperature geothermal systems. Mean TCO2 Flux estimates fall within the range of deep drill hole temperatures at Wairakei (New Zealand), Tauhara (New Zealand), Rotokawa (New Zealand), Ohaaki (New Zealand), Reykjanes (Iceland) and Copahue (Argentina). The spatial distribution of geothermometry estimates is consistent with the location of major upflow zones previously reported at the Wairakei and Rotokawa geothermal systems. TCO2 Flux was also evaluated at White Island (New Zealand) and Reporoa (New Zealand), where limited sub-surface data exists. Mode TCO2 Flux at White Island is high (320 C), the highest of the systems considered in this study. However, the geothermometer relies on mineral–water equilibrium in neutral pH reservoir fluids, and would not be reliable in such an active and acidic environment. Mean TCO2 Flux at Reporoa (310 C) is high, which indicates Reporoa has a separate upflow from the nearby Waiotapu geothermal system; an outflow from Waiotapu would not be expected to have such high temperature. Published 1-16 1TR. Studi per le Georisorse JCR Journal Article in Journal/Newspaper Iceland White Island Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) Argentina New Zealand Reykjanes ENVELOPE(-22.250,-22.250,65.467,65.467) White Island ENVELOPE(48.583,48.583,-66.733,-66.733) Geochimica et Cosmochimica Acta 213 1 16 |
institution |
Open Polar |
collection |
Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) |
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ftingv |
language |
English |
description |
A new geothermometer (TCO2 Flux) is proposed based on soil diffuse CO2 flux and shallow temperature measurements made on areas of steam heated, thermally altered ground above active geothermal systems. This CO2 flux geothermometer is based on a previously reported CO2 geothermometer that was designed for use with fumarole analysis. The new geothermometer provides a valuable additional exploration tool for estimating subsurface temperatures in high-temperature geothermal systems. Mean TCO2 Flux estimates fall within the range of deep drill hole temperatures at Wairakei (New Zealand), Tauhara (New Zealand), Rotokawa (New Zealand), Ohaaki (New Zealand), Reykjanes (Iceland) and Copahue (Argentina). The spatial distribution of geothermometry estimates is consistent with the location of major upflow zones previously reported at the Wairakei and Rotokawa geothermal systems. TCO2 Flux was also evaluated at White Island (New Zealand) and Reporoa (New Zealand), where limited sub-surface data exists. Mode TCO2 Flux at White Island is high (320 C), the highest of the systems considered in this study. However, the geothermometer relies on mineral–water equilibrium in neutral pH reservoir fluids, and would not be reliable in such an active and acidic environment. Mean TCO2 Flux at Reporoa (310 C) is high, which indicates Reporoa has a separate upflow from the nearby Waiotapu geothermal system; an outflow from Waiotapu would not be expected to have such high temperature. Published 1-16 1TR. Studi per le Georisorse JCR Journal |
author2 |
#PLACEHOLDER_PARENT_METADATA_VALUE# Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Bologna, Bologna, Italia |
format |
Article in Journal/Newspaper |
author |
Harvey, M. C. Rowland, J. V. Chiodini, Giovanni Rissmann, C. F. Bloomberg, S. Fridriksson, T. Oladottir, A. A. |
spellingShingle |
Harvey, M. C. Rowland, J. V. Chiodini, Giovanni Rissmann, C. F. Bloomberg, S. Fridriksson, T. Oladottir, A. A. CO 2 flux geothermometer for geothermal exploration |
author_facet |
Harvey, M. C. Rowland, J. V. Chiodini, Giovanni Rissmann, C. F. Bloomberg, S. Fridriksson, T. Oladottir, A. A. |
author_sort |
Harvey, M. C. |
title |
CO 2 flux geothermometer for geothermal exploration |
title_short |
CO 2 flux geothermometer for geothermal exploration |
title_full |
CO 2 flux geothermometer for geothermal exploration |
title_fullStr |
CO 2 flux geothermometer for geothermal exploration |
title_full_unstemmed |
CO 2 flux geothermometer for geothermal exploration |
title_sort |
co 2 flux geothermometer for geothermal exploration |
publishDate |
2017 |
url |
http://hdl.handle.net/2122/11064 https://doi.org/10.1016/j.gca.2017.06.025 |
long_lat |
ENVELOPE(-22.250,-22.250,65.467,65.467) ENVELOPE(48.583,48.583,-66.733,-66.733) |
geographic |
Argentina New Zealand Reykjanes White Island |
geographic_facet |
Argentina New Zealand Reykjanes White Island |
genre |
Iceland White Island |
genre_facet |
Iceland White Island |
op_relation |
Geochimica et Cosmochimica Acta /213 (2017) http://hdl.handle.net/2122/11064 doi:10.1016/j.gca.2017.06.025 |
op_rights |
restricted |
op_doi |
https://doi.org/10.1016/j.gca.2017.06.025 |
container_title |
Geochimica et Cosmochimica Acta |
container_volume |
213 |
container_start_page |
1 |
op_container_end_page |
16 |
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1766041143864197120 |