Geothermal energy and ore-forming potential of 600 °C mid-ocean-ridge hydrothermal fluids
The ~4500-m-deep Iceland Deep Drilling Project (IDDP) borehole IDDP-2 in Iceland penetrated the root of an active seawater-recharged hydrothermal system below the Mid-Atlantic Ridge. As direct sampling of pristine free fluid was impossible, we used fluid inclusions to constrain the in situ condition...
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ftunivbern:oai:boris.unibe.ch:147110 2023-08-20T04:07:23+02:00 Geothermal energy and ore-forming potential of 600 °C mid-ocean-ridge hydrothermal fluids Bali, Enikő Aradi, László E. Zierenberg, Robert Diamond, Larryn W. Pettke, Thomas Szabo, Ábel Gudfinnsson, Guðmundur H. Fridleifsson, Guðmundur Ó. Szabo, Csaba 2020-08 application/pdf https://boris.unibe.ch/147110/1/g47791.pdf https://boris.unibe.ch/147110/ eng eng Geological Society of America https://boris.unibe.ch/147110/ info:eu-repo/semantics/openAccess Bali, Enikő; Aradi, László E.; Zierenberg, Robert; Diamond, Larryn W.; Pettke, Thomas; Szabo, Ábel; Gudfinnsson, Guðmundur H.; Fridleifsson, Guðmundur Ó.; Szabo, Csaba (2020). Geothermal energy and ore-forming potential of 600 °C mid-ocean-ridge hydrothermal fluids. Geology, 48(12), pp. 1221-1225. Geological Society of America 10.1130/G47791.1 <http://dx.doi.org/10.1130/G47791.1> 550 Earth sciences & geology info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2020 ftunivbern https://doi.org/10.1130/G47791.1 2023-07-31T22:01:55Z The ~4500-m-deep Iceland Deep Drilling Project (IDDP) borehole IDDP-2 in Iceland penetrated the root of an active seawater-recharged hydrothermal system below the Mid-Atlantic Ridge. As direct sampling of pristine free fluid was impossible, we used fluid inclusions to constrain the in situ conditions and fluid composition at the bottom of the hydrothermal convection cell. The fluid temperature is ~600 °C, and its pressure is near-hydrostatic (~45 MPa). The fluid exists as two separate phases: an H2O-rich vapor (with an enthalpy of ~59.4 kJ/mol) and an Fe-K–rich brine containing 2000 μg/g Cu, 3.5 μg/g Ag, 1.4 μg/g U, and 0.14 μg/g Au. Occasionally, the fluid inclusions coexist with rhyolite melt inclusions. These findings indicate that the borehole intersected high-energy steam, which is valuable for energy production, and discovered a potentially ore-forming brine. We suggest that similar fluids circulate deep beneath mid-ocean ridges worldwide and form volcanogenic massive sulfide Cu-Zn-Au-Ag ore deposits. Article in Journal/Newspaper Iceland BORIS (Bern Open Repository and Information System, University of Bern) Mid-Atlantic Ridge Geology 48 12 1221 1225 |
institution |
Open Polar |
collection |
BORIS (Bern Open Repository and Information System, University of Bern) |
op_collection_id |
ftunivbern |
language |
English |
topic |
550 Earth sciences & geology |
spellingShingle |
550 Earth sciences & geology Bali, Enikő Aradi, László E. Zierenberg, Robert Diamond, Larryn W. Pettke, Thomas Szabo, Ábel Gudfinnsson, Guðmundur H. Fridleifsson, Guðmundur Ó. Szabo, Csaba Geothermal energy and ore-forming potential of 600 °C mid-ocean-ridge hydrothermal fluids |
topic_facet |
550 Earth sciences & geology |
description |
The ~4500-m-deep Iceland Deep Drilling Project (IDDP) borehole IDDP-2 in Iceland penetrated the root of an active seawater-recharged hydrothermal system below the Mid-Atlantic Ridge. As direct sampling of pristine free fluid was impossible, we used fluid inclusions to constrain the in situ conditions and fluid composition at the bottom of the hydrothermal convection cell. The fluid temperature is ~600 °C, and its pressure is near-hydrostatic (~45 MPa). The fluid exists as two separate phases: an H2O-rich vapor (with an enthalpy of ~59.4 kJ/mol) and an Fe-K–rich brine containing 2000 μg/g Cu, 3.5 μg/g Ag, 1.4 μg/g U, and 0.14 μg/g Au. Occasionally, the fluid inclusions coexist with rhyolite melt inclusions. These findings indicate that the borehole intersected high-energy steam, which is valuable for energy production, and discovered a potentially ore-forming brine. We suggest that similar fluids circulate deep beneath mid-ocean ridges worldwide and form volcanogenic massive sulfide Cu-Zn-Au-Ag ore deposits. |
format |
Article in Journal/Newspaper |
author |
Bali, Enikő Aradi, László E. Zierenberg, Robert Diamond, Larryn W. Pettke, Thomas Szabo, Ábel Gudfinnsson, Guðmundur H. Fridleifsson, Guðmundur Ó. Szabo, Csaba |
author_facet |
Bali, Enikő Aradi, László E. Zierenberg, Robert Diamond, Larryn W. Pettke, Thomas Szabo, Ábel Gudfinnsson, Guðmundur H. Fridleifsson, Guðmundur Ó. Szabo, Csaba |
author_sort |
Bali, Enikő |
title |
Geothermal energy and ore-forming potential of 600 °C mid-ocean-ridge hydrothermal fluids |
title_short |
Geothermal energy and ore-forming potential of 600 °C mid-ocean-ridge hydrothermal fluids |
title_full |
Geothermal energy and ore-forming potential of 600 °C mid-ocean-ridge hydrothermal fluids |
title_fullStr |
Geothermal energy and ore-forming potential of 600 °C mid-ocean-ridge hydrothermal fluids |
title_full_unstemmed |
Geothermal energy and ore-forming potential of 600 °C mid-ocean-ridge hydrothermal fluids |
title_sort |
geothermal energy and ore-forming potential of 600 °c mid-ocean-ridge hydrothermal fluids |
publisher |
Geological Society of America |
publishDate |
2020 |
url |
https://boris.unibe.ch/147110/1/g47791.pdf https://boris.unibe.ch/147110/ |
geographic |
Mid-Atlantic Ridge |
geographic_facet |
Mid-Atlantic Ridge |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
Bali, Enikő; Aradi, László E.; Zierenberg, Robert; Diamond, Larryn W.; Pettke, Thomas; Szabo, Ábel; Gudfinnsson, Guðmundur H.; Fridleifsson, Guðmundur Ó.; Szabo, Csaba (2020). Geothermal energy and ore-forming potential of 600 °C mid-ocean-ridge hydrothermal fluids. Geology, 48(12), pp. 1221-1225. Geological Society of America 10.1130/G47791.1 <http://dx.doi.org/10.1130/G47791.1> |
op_relation |
https://boris.unibe.ch/147110/ |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1130/G47791.1 |
container_title |
Geology |
container_volume |
48 |
container_issue |
12 |
container_start_page |
1221 |
op_container_end_page |
1225 |
_version_ |
1774718981640290304 |