Massive serpentinite carbonation at Linnajavri, N-Norway
Carbonation of ultramafic rocks is being considered as an in situ disposal strategy for anthropogenic CO 2. We present observations from massively carbonated serpentinites at Linnajavri, N-Norway, where serpentinized fragments of the dismembered ophiolite are hydrothermally altered to soapstone and...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Published: |
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/47916 |
| _version_ | 1848757965970997248 |
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| author | Beinlich, Andreas Plümper, O. Hövelmann, J. Austrheim, H. Jamtveit, B. |
| author_facet | Beinlich, Andreas Plümper, O. Hövelmann, J. Austrheim, H. Jamtveit, B. |
| author_sort | Beinlich, Andreas |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Carbonation of ultramafic rocks is being considered as an in situ disposal strategy for anthropogenic CO 2. We present observations from massively carbonated serpentinites at Linnajavri, N-Norway, where serpentinized fragments of the dismembered ophiolite are hydrothermally altered to soapstone and listvenite on a km-scale. Several sharp reaction fronts between the soapstone and the serpentinite can be followed for hundreds of metres. Listvenite is present between the underlying carbonate-mica schist and the soapstone. The O-isotopic compositions of vein minerals in the listvenite and adjacent soapstone indicate an isothermal formation at ~275°C. In agreement with C-isotope signatures, field observations suggest that fluids were derived from overthrusted sediments. Porosimetry data, mass-balance calculations and the perpetuation of serpentinite structures imply an isovolumetric alteration. We conclude that the reactions stopped due to the cessation of the external CO 2 supply. Soapstone formation is associated with sequestration of more than 13 Mt of CO 2. © 2012 Blackwell Publishing Ltd. |
| first_indexed | 2025-11-14T09:36:29Z |
| format | Journal Article |
| id | curtin-20.500.11937-47916 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:36:29Z |
| publishDate | 2012 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-479162017-09-13T14:19:00Z Massive serpentinite carbonation at Linnajavri, N-Norway Beinlich, Andreas Plümper, O. Hövelmann, J. Austrheim, H. Jamtveit, B. Carbonation of ultramafic rocks is being considered as an in situ disposal strategy for anthropogenic CO 2. We present observations from massively carbonated serpentinites at Linnajavri, N-Norway, where serpentinized fragments of the dismembered ophiolite are hydrothermally altered to soapstone and listvenite on a km-scale. Several sharp reaction fronts between the soapstone and the serpentinite can be followed for hundreds of metres. Listvenite is present between the underlying carbonate-mica schist and the soapstone. The O-isotopic compositions of vein minerals in the listvenite and adjacent soapstone indicate an isothermal formation at ~275°C. In agreement with C-isotope signatures, field observations suggest that fluids were derived from overthrusted sediments. Porosimetry data, mass-balance calculations and the perpetuation of serpentinite structures imply an isovolumetric alteration. We conclude that the reactions stopped due to the cessation of the external CO 2 supply. Soapstone formation is associated with sequestration of more than 13 Mt of CO 2. © 2012 Blackwell Publishing Ltd. 2012 Journal Article http://hdl.handle.net/20.500.11937/47916 10.1111/j.1365-3121.2012.01083.x restricted |
| spellingShingle | Beinlich, Andreas Plümper, O. Hövelmann, J. Austrheim, H. Jamtveit, B. Massive serpentinite carbonation at Linnajavri, N-Norway |
| title | Massive serpentinite carbonation at Linnajavri, N-Norway |
| title_full | Massive serpentinite carbonation at Linnajavri, N-Norway |
| title_fullStr | Massive serpentinite carbonation at Linnajavri, N-Norway |
| title_full_unstemmed | Massive serpentinite carbonation at Linnajavri, N-Norway |
| title_short | Massive serpentinite carbonation at Linnajavri, N-Norway |
| title_sort | massive serpentinite carbonation at linnajavri, n-norway |
| url | http://hdl.handle.net/20.500.11937/47916 |