Structural, geochemical, and mineralogical investigation of active hydrothermal fluid discharges at Strýtan hydrothermal chimney, Akureyri Bay, Eyjafjörður region, Iceland
Abstract A submarine hydrothermal fluid discharge structure in Akureyri Bay, Eyjafjörður region, Iceland, was investigated by means of structural, geochemical, and mineralogical methods. Thermal and chemical gradients between the hydrothermal fluid and the subarctic seawater lead to an ongoing miner...
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ftdoajarticles:oai:doaj.org/article:7dd41dfe88dc4c2c99b8f365844b04eb 2023-05-15T13:08:21+02:00 Structural, geochemical, and mineralogical investigation of active hydrothermal fluid discharges at Strýtan hydrothermal chimney, Akureyri Bay, Eyjafjörður region, Iceland Richard Stanulla Christiane Stanulla Erlendur Bogason Thomas Pohl Broder Merkel 2017-06-01T00:00:00Z https://doi.org/10.1186/s40517-017-0065-0 https://doaj.org/article/7dd41dfe88dc4c2c99b8f365844b04eb EN eng SpringerOpen http://link.springer.com/article/10.1186/s40517-017-0065-0 https://doaj.org/toc/2195-9706 doi:10.1186/s40517-017-0065-0 2195-9706 https://doaj.org/article/7dd41dfe88dc4c2c99b8f365844b04eb Geothermal Energy, Vol 5, Iss 1, Pp 1-11 (2017) Submarine groundwater discharge Hydrothermal chimney Shallow-water hydrothermal system Scientific diving Iceland Strýtan Renewable energy sources TJ807-830 Geology QE1-996.5 article 2017 ftdoajarticles https://doi.org/10.1186/s40517-017-0065-0 2022-12-31T13:41:58Z Abstract A submarine hydrothermal fluid discharge structure in Akureyri Bay, Eyjafjörður region, Iceland, was investigated by means of structural, geochemical, and mineralogical methods. Thermal and chemical gradients between the hydrothermal fluid and the subarctic seawater lead to an ongoing mineral precipitation. This process builds up hydrothermal chimneys of dozens of meters in height and they are still growing. The structural analysis reveals an internal stratification of the mineral precipitates at various scales from sub-micrometers to several decimeters. This stratification indicates random changes in the depositional system during the formation of the hydrothermal cones. Some mineral layers are characterized by a dominance of Si, Mg, and O. In contrast, others are dominated by Ca and O. However, the results of XRD analysis proved that the material consists mainly of a trioctahedral phyllosilicate of the smectite group, presumably saponite or stevensite. Additionally, aragonite and hisingerite could be present. The material is built up of numerous parallel tubes, which act as conductors in the hydrothermal chimneys. Consequently, a large amount of available pore space with pore volumes of up to 6 mm3 was detected in the sample by the porosity analysis. Article in Journal/Newspaper Akureyri Akureyri Akureyri Iceland Subarctic Directory of Open Access Journals: DOAJ Articles Akureyri Eyjafjörður ENVELOPE(-18.150,-18.150,65.500,65.500) Geothermal Energy 5 1 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Submarine groundwater discharge Hydrothermal chimney Shallow-water hydrothermal system Scientific diving Iceland Strýtan Renewable energy sources TJ807-830 Geology QE1-996.5 |
spellingShingle |
Submarine groundwater discharge Hydrothermal chimney Shallow-water hydrothermal system Scientific diving Iceland Strýtan Renewable energy sources TJ807-830 Geology QE1-996.5 Richard Stanulla Christiane Stanulla Erlendur Bogason Thomas Pohl Broder Merkel Structural, geochemical, and mineralogical investigation of active hydrothermal fluid discharges at Strýtan hydrothermal chimney, Akureyri Bay, Eyjafjörður region, Iceland |
topic_facet |
Submarine groundwater discharge Hydrothermal chimney Shallow-water hydrothermal system Scientific diving Iceland Strýtan Renewable energy sources TJ807-830 Geology QE1-996.5 |
description |
Abstract A submarine hydrothermal fluid discharge structure in Akureyri Bay, Eyjafjörður region, Iceland, was investigated by means of structural, geochemical, and mineralogical methods. Thermal and chemical gradients between the hydrothermal fluid and the subarctic seawater lead to an ongoing mineral precipitation. This process builds up hydrothermal chimneys of dozens of meters in height and they are still growing. The structural analysis reveals an internal stratification of the mineral precipitates at various scales from sub-micrometers to several decimeters. This stratification indicates random changes in the depositional system during the formation of the hydrothermal cones. Some mineral layers are characterized by a dominance of Si, Mg, and O. In contrast, others are dominated by Ca and O. However, the results of XRD analysis proved that the material consists mainly of a trioctahedral phyllosilicate of the smectite group, presumably saponite or stevensite. Additionally, aragonite and hisingerite could be present. The material is built up of numerous parallel tubes, which act as conductors in the hydrothermal chimneys. Consequently, a large amount of available pore space with pore volumes of up to 6 mm3 was detected in the sample by the porosity analysis. |
format |
Article in Journal/Newspaper |
author |
Richard Stanulla Christiane Stanulla Erlendur Bogason Thomas Pohl Broder Merkel |
author_facet |
Richard Stanulla Christiane Stanulla Erlendur Bogason Thomas Pohl Broder Merkel |
author_sort |
Richard Stanulla |
title |
Structural, geochemical, and mineralogical investigation of active hydrothermal fluid discharges at Strýtan hydrothermal chimney, Akureyri Bay, Eyjafjörður region, Iceland |
title_short |
Structural, geochemical, and mineralogical investigation of active hydrothermal fluid discharges at Strýtan hydrothermal chimney, Akureyri Bay, Eyjafjörður region, Iceland |
title_full |
Structural, geochemical, and mineralogical investigation of active hydrothermal fluid discharges at Strýtan hydrothermal chimney, Akureyri Bay, Eyjafjörður region, Iceland |
title_fullStr |
Structural, geochemical, and mineralogical investigation of active hydrothermal fluid discharges at Strýtan hydrothermal chimney, Akureyri Bay, Eyjafjörður region, Iceland |
title_full_unstemmed |
Structural, geochemical, and mineralogical investigation of active hydrothermal fluid discharges at Strýtan hydrothermal chimney, Akureyri Bay, Eyjafjörður region, Iceland |
title_sort |
structural, geochemical, and mineralogical investigation of active hydrothermal fluid discharges at strýtan hydrothermal chimney, akureyri bay, eyjafjörður region, iceland |
publisher |
SpringerOpen |
publishDate |
2017 |
url |
https://doi.org/10.1186/s40517-017-0065-0 https://doaj.org/article/7dd41dfe88dc4c2c99b8f365844b04eb |
long_lat |
ENVELOPE(-18.150,-18.150,65.500,65.500) |
geographic |
Akureyri Eyjafjörður |
geographic_facet |
Akureyri Eyjafjörður |
genre |
Akureyri Akureyri Akureyri Iceland Subarctic |
genre_facet |
Akureyri Akureyri Akureyri Iceland Subarctic |
op_source |
Geothermal Energy, Vol 5, Iss 1, Pp 1-11 (2017) |
op_relation |
http://link.springer.com/article/10.1186/s40517-017-0065-0 https://doaj.org/toc/2195-9706 doi:10.1186/s40517-017-0065-0 2195-9706 https://doaj.org/article/7dd41dfe88dc4c2c99b8f365844b04eb |
op_doi |
https://doi.org/10.1186/s40517-017-0065-0 |
container_title |
Geothermal Energy |
container_volume |
5 |
container_issue |
1 |
_version_ |
1766084207246835712 |