δ60Ni and δ13C Composition of Serpentinites and Carbonates of the Tekirova Ophiolite, Turkey, and Meatiq Ophiolite, Egypt
Nickel isotope fractionation patterns in continental ultramafic environments generally show a depletion of δ60Ni in weathered rocks and an enrichment in bedrock samples. The present study focuses on stable Ni isotope fractionation patterns in carbonate-rich, ultramafic ophiolite samples with concomi...
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Frontiers Media S.A.
2021-06-01
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| Series: | Frontiers in Earth Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2021.651967/full |
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| author | Anna Neubeck Arjen Boosman Hakan Hosgörmez Dogacan Özcan Arman Boskabadi Magnus Ivarsson Olivier Rouxel |
| author_facet | Anna Neubeck Arjen Boosman Hakan Hosgörmez Dogacan Özcan Arman Boskabadi Magnus Ivarsson Olivier Rouxel |
| author_sort | Anna Neubeck |
| collection | DOAJ |
| description | Nickel isotope fractionation patterns in continental ultramafic environments generally show a depletion of δ60Ni in weathered rocks and an enrichment in bedrock samples. The present study focuses on stable Ni isotope fractionation patterns in carbonate-rich, ultramafic ophiolite samples with concomitant fluids at an active serpentinization site in southwestern Turkey, with a comparison to results from an inactive serpentinization site in the Eastern Desert of Egypt with carbonate-rich samples. All solid phase data from the inactive serpentinization area are consistent with previously reported values from serpentinites, whereas the solid precipitates in the active area (SW Turkey) give values slightly heavier than previously reported data. However, the Ni isotopic signatures in the active serpentinization system likely reflect the scavenging of light Ni by iron oxide and carbonate precipitation, as has been previously demonstrated in laboratory coprecipitation experiments. It is also possible that the active system results resemble previous laboratory experimental results that show a relatively strong initial fractionation between fluids and solids, which then diminishes with time due to aging of the precipitates. |
| first_indexed | 2024-12-16T23:30:45Z |
| format | Article |
| id | doaj.art-e97cd2c5d4ca4fe682237bfcd328f771 |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-12-16T23:30:45Z |
| publishDate | 2021-06-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-e97cd2c5d4ca4fe682237bfcd328f7712022-12-21T22:11:53ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632021-06-01910.3389/feart.2021.651967651967δ60Ni and δ13C Composition of Serpentinites and Carbonates of the Tekirova Ophiolite, Turkey, and Meatiq Ophiolite, EgyptAnna Neubeck0Arjen Boosman1Hakan Hosgörmez2Dogacan Özcan3Arman Boskabadi4Magnus Ivarsson5Olivier Rouxel6Department of Earth Sciences, Uppsala University, Uppsala, SwedenDepartment of Earth Sciences, Utrecht University, Utrecht, NetherlandsDepartment of Geological Engineering, Istanbul University - Cerrahpasa, Istanbul, TurkeyDepartment of Geological Engineering, Istanbul University - Cerrahpasa, Istanbul, TurkeyDepartment of Geological Sciences, Stockholm University, Richardson, SwedenSwedish Museum of Natural History, Stockholm, SwedenIfremer, Plouzané, FranceNickel isotope fractionation patterns in continental ultramafic environments generally show a depletion of δ60Ni in weathered rocks and an enrichment in bedrock samples. The present study focuses on stable Ni isotope fractionation patterns in carbonate-rich, ultramafic ophiolite samples with concomitant fluids at an active serpentinization site in southwestern Turkey, with a comparison to results from an inactive serpentinization site in the Eastern Desert of Egypt with carbonate-rich samples. All solid phase data from the inactive serpentinization area are consistent with previously reported values from serpentinites, whereas the solid precipitates in the active area (SW Turkey) give values slightly heavier than previously reported data. However, the Ni isotopic signatures in the active serpentinization system likely reflect the scavenging of light Ni by iron oxide and carbonate precipitation, as has been previously demonstrated in laboratory coprecipitation experiments. It is also possible that the active system results resemble previous laboratory experimental results that show a relatively strong initial fractionation between fluids and solids, which then diminishes with time due to aging of the precipitates.https://www.frontiersin.org/articles/10.3389/feart.2021.651967/fullnickel isotopesophiolitecarbonateserpentinizationmethane seepcarbon isotopes |
| spellingShingle | Anna Neubeck Arjen Boosman Hakan Hosgörmez Dogacan Özcan Arman Boskabadi Magnus Ivarsson Olivier Rouxel δ60Ni and δ13C Composition of Serpentinites and Carbonates of the Tekirova Ophiolite, Turkey, and Meatiq Ophiolite, Egypt Frontiers in Earth Science nickel isotopes ophiolite carbonate serpentinization methane seep carbon isotopes |
| title | δ60Ni and δ13C Composition of Serpentinites and Carbonates of the Tekirova Ophiolite, Turkey, and Meatiq Ophiolite, Egypt |
| title_full | δ60Ni and δ13C Composition of Serpentinites and Carbonates of the Tekirova Ophiolite, Turkey, and Meatiq Ophiolite, Egypt |
| title_fullStr | δ60Ni and δ13C Composition of Serpentinites and Carbonates of the Tekirova Ophiolite, Turkey, and Meatiq Ophiolite, Egypt |
| title_full_unstemmed | δ60Ni and δ13C Composition of Serpentinites and Carbonates of the Tekirova Ophiolite, Turkey, and Meatiq Ophiolite, Egypt |
| title_short | δ60Ni and δ13C Composition of Serpentinites and Carbonates of the Tekirova Ophiolite, Turkey, and Meatiq Ophiolite, Egypt |
| title_sort | δ60ni and δ13c composition of serpentinites and carbonates of the tekirova ophiolite turkey and meatiq ophiolite egypt |
| topic | nickel isotopes ophiolite carbonate serpentinization methane seep carbon isotopes |
| url | https://www.frontiersin.org/articles/10.3389/feart.2021.651967/full |
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