Tectonic control on travertine and silica sinter deposition in oceanic transform-fault setting: the case of the Lýsuskarð volcano-geothermal area, Snæfellsnes Peninsula, Iceland
Deposition of terrestrial carbonate (i.e. travertine) and silica sinter in geothermal areas is always closely linked to the presence of relevant crustal structures which enhance the permeability in the upper crust favouring the upflow of fluids to the surface. Most travertine deposits are originated...
Published in: | International Geology Review |
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Online Access: | https://hdl.handle.net/11586/421414 https://doi.org/10.1080/00206814.2023.2180779 |
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ftunivbari:oai:ricerca.uniba.it:11586/421414 2024-04-14T08:13:30+00:00 Tectonic control on travertine and silica sinter deposition in oceanic transform-fault setting: the case of the Lýsuskarð volcano-geothermal area, Snæfellsnes Peninsula, Iceland Andrea Brogi Isabel ISRADE Sigurveig Árnadóttir Enrico Capezzuoli Brogi, Andrea Israde, Isabel Árnadóttir, Sigurveig Capezzuoli, Enrico 2023 https://hdl.handle.net/11586/421414 https://doi.org/10.1080/00206814.2023.2180779 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000936200200001 firstpage:1 lastpage:24 numberofpages:24 journal:INTERNATIONAL GEOLOGY REVIEW info:eu-repo/grantAgreement/EC/H2020/871149 https://hdl.handle.net/11586/421414 doi:10.1080/00206814.2023.2180779 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85148624562 Travertine silica sinter geothermal system transform fault rifting Iceland info:eu-repo/semantics/article 2023 ftunivbari https://doi.org/10.1080/00206814.2023.2180779 2024-03-21T17:59:59Z Deposition of terrestrial carbonate (i.e. travertine) and silica sinter in geothermal areas is always closely linked to the presence of relevant crustal structures which enhance the permeability in the upper crust favouring the upflow of fluids to the surface. Most travertine deposits are originated by geothermal fluids stored within carbonate reservoirs in continental crust, and their morphology and areal distribution provide useful information on geometry, kinematics, and age of faults which control the fluid flow. In this paper, we focus on the tectonic control on a travertine depositional system, associated with silica sinter, developing in oceanic crust, in the LATIN SMALL LETTER Y WITH ACUTEsuskaro volcano-geothermal area on the Sn AE fellsnes Peninsula, West Iceland. The presence of HCO3 and Ca in the geothermal fluids is related to chemical-physical processes linked to fluid-rock interaction that occurs in the geothermal reservoir made up of tholeiitic basalt, by fluids enriched in CO2 of deep origin (i.e. magmatic). Travertine deposits consist of mounds and slopes, which are still in formation and overlie the silica sinter deposits. Both sinter and travertine deposits derive from thermal springs aligned according to two trends: NNE-SSW and WNW-ESE. This evidence suggests the occurrence of buried, permeable, and thus active faults, which control the circulation of fluids containing HCO3 and Ca. Faults are near parallel to those which define the rift systems and transform zones in Iceland, and probably comprise the still active sector of the abandoned transform zone that, starting with the Sn AE fellsnes Peninsula, interrupts eastward the northern continuation of the western and eastern rift-zones in the south-central Iceland. In this setting, we refer, for the first time, travertine and silica sinter deposition to an oceanic active crustal structure. Article in Journal/Newspaper Iceland Università degli Studi di Bari Aldo Moro: CINECA IRIS International Geology Review 65 21 3287 3310 |
institution |
Open Polar |
collection |
Università degli Studi di Bari Aldo Moro: CINECA IRIS |
op_collection_id |
ftunivbari |
language |
English |
topic |
Travertine silica sinter geothermal system transform fault rifting Iceland |
spellingShingle |
Travertine silica sinter geothermal system transform fault rifting Iceland Andrea Brogi Isabel ISRADE Sigurveig Árnadóttir Enrico Capezzuoli Tectonic control on travertine and silica sinter deposition in oceanic transform-fault setting: the case of the Lýsuskarð volcano-geothermal area, Snæfellsnes Peninsula, Iceland |
topic_facet |
Travertine silica sinter geothermal system transform fault rifting Iceland |
description |
Deposition of terrestrial carbonate (i.e. travertine) and silica sinter in geothermal areas is always closely linked to the presence of relevant crustal structures which enhance the permeability in the upper crust favouring the upflow of fluids to the surface. Most travertine deposits are originated by geothermal fluids stored within carbonate reservoirs in continental crust, and their morphology and areal distribution provide useful information on geometry, kinematics, and age of faults which control the fluid flow. In this paper, we focus on the tectonic control on a travertine depositional system, associated with silica sinter, developing in oceanic crust, in the LATIN SMALL LETTER Y WITH ACUTEsuskaro volcano-geothermal area on the Sn AE fellsnes Peninsula, West Iceland. The presence of HCO3 and Ca in the geothermal fluids is related to chemical-physical processes linked to fluid-rock interaction that occurs in the geothermal reservoir made up of tholeiitic basalt, by fluids enriched in CO2 of deep origin (i.e. magmatic). Travertine deposits consist of mounds and slopes, which are still in formation and overlie the silica sinter deposits. Both sinter and travertine deposits derive from thermal springs aligned according to two trends: NNE-SSW and WNW-ESE. This evidence suggests the occurrence of buried, permeable, and thus active faults, which control the circulation of fluids containing HCO3 and Ca. Faults are near parallel to those which define the rift systems and transform zones in Iceland, and probably comprise the still active sector of the abandoned transform zone that, starting with the Sn AE fellsnes Peninsula, interrupts eastward the northern continuation of the western and eastern rift-zones in the south-central Iceland. In this setting, we refer, for the first time, travertine and silica sinter deposition to an oceanic active crustal structure. |
author2 |
Brogi, Andrea Israde, Isabel Árnadóttir, Sigurveig Capezzuoli, Enrico |
format |
Article in Journal/Newspaper |
author |
Andrea Brogi Isabel ISRADE Sigurveig Árnadóttir Enrico Capezzuoli |
author_facet |
Andrea Brogi Isabel ISRADE Sigurveig Árnadóttir Enrico Capezzuoli |
author_sort |
Andrea Brogi |
title |
Tectonic control on travertine and silica sinter deposition in oceanic transform-fault setting: the case of the Lýsuskarð volcano-geothermal area, Snæfellsnes Peninsula, Iceland |
title_short |
Tectonic control on travertine and silica sinter deposition in oceanic transform-fault setting: the case of the Lýsuskarð volcano-geothermal area, Snæfellsnes Peninsula, Iceland |
title_full |
Tectonic control on travertine and silica sinter deposition in oceanic transform-fault setting: the case of the Lýsuskarð volcano-geothermal area, Snæfellsnes Peninsula, Iceland |
title_fullStr |
Tectonic control on travertine and silica sinter deposition in oceanic transform-fault setting: the case of the Lýsuskarð volcano-geothermal area, Snæfellsnes Peninsula, Iceland |
title_full_unstemmed |
Tectonic control on travertine and silica sinter deposition in oceanic transform-fault setting: the case of the Lýsuskarð volcano-geothermal area, Snæfellsnes Peninsula, Iceland |
title_sort |
tectonic control on travertine and silica sinter deposition in oceanic transform-fault setting: the case of the lýsuskarð volcano-geothermal area, snæfellsnes peninsula, iceland |
publishDate |
2023 |
url |
https://hdl.handle.net/11586/421414 https://doi.org/10.1080/00206814.2023.2180779 |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000936200200001 firstpage:1 lastpage:24 numberofpages:24 journal:INTERNATIONAL GEOLOGY REVIEW info:eu-repo/grantAgreement/EC/H2020/871149 https://hdl.handle.net/11586/421414 doi:10.1080/00206814.2023.2180779 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85148624562 |
op_doi |
https://doi.org/10.1080/00206814.2023.2180779 |
container_title |
International Geology Review |
container_volume |
65 |
container_issue |
21 |
container_start_page |
3287 |
op_container_end_page |
3310 |
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1796311502661091328 |