X-ray diffraction profiles, Raman spectra and carbon and oxygen isotope compositions of fibrous cement from Black Sea seeps
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| Auteurs principaux: | , , , , , , , , |
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
2024
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| _version_ | 1867171041523007488 |
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| author | Lu, Yang Mihailova, Boriana Malcherek, Thomas Paulmann, Carsten Smrzka, Daniel Zwicker, Jennifer Lin, Zhiyong Bohrmann, Gerhard Peckmann, Jörn |
| author_facet | Lu, Yang Mihailova, Boriana Malcherek, Thomas Paulmann, Carsten Smrzka, Daniel Zwicker, Jennifer Lin, Zhiyong Bohrmann, Gerhard Peckmann, Jörn |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The mineral phase of primary marine fibrous carbonate is supposed to be mainly controlled by the Mg/Ca of seawater during precipitation. However, fibrous Mg calcite was identified from seep carbonates in the Black Sea, although the high Mg/Ca of the Black Sea seawater should promote the precipitation of aragonite. The unexpected formation of fibrous Mg calcite indicates additional factors other than Mg/Ca. In order to clarify the factors, we studied seep carbonates from the Black Sea. Points of interest were selected by observation under a microscope. Main compositions of the points were measured by an energy-dispersive X-ray spectroscope. Mineral structure and spectroscopy characteristics were analysed by X-ray diffraction and Raman, respectively, and converted to MgCO₃ contents according to empirical formulas. Carbon and oxygen isotope compositions of fibrous carbonate minerals were measured by an isotope ratio mass spectrometer. The results suggest that the fibrous Mg calcite from the Black Sea were formed by sulphide-driven anaerobic oxidation of methane under reducing conditions, which contributes to the understanding of the formation of Neoproterozoic fibrous dolomite. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_964859 |
| institution | PANGAEA |
| language | en |
| publishDate | 2024 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | X-ray diffraction profiles, Raman spectra and carbon and oxygen isotope compositions of fibrous cement from Black Sea seeps Lu, Yang Mihailova, Boriana Malcherek, Thomas Paulmann, Carsten Smrzka, Daniel Zwicker, Jennifer Lin, Zhiyong Bohrmann, Gerhard Peckmann, Jörn BEAM; Beam trawl; Binary Object; Black Sea; BS346GR; Dolgovskoy mound; Fibrous magnesium calcite; File content; GeoB9908-1; Marine cement; MEGASEEBS_1993; Methane Gas Seep Explorations in the Black Sea; PO201F,G; POS201/6,7; POS201/6,7_UBS1; Poseidon; Professor Logachev; Romanian shelf; SD-AOM; Television-Grab; TTR-15; TVG; Ukrainian shelf The mineral phase of primary marine fibrous carbonate is supposed to be mainly controlled by the Mg/Ca of seawater during precipitation. However, fibrous Mg calcite was identified from seep carbonates in the Black Sea, although the high Mg/Ca of the Black Sea seawater should promote the precipitation of aragonite. The unexpected formation of fibrous Mg calcite indicates additional factors other than Mg/Ca. In order to clarify the factors, we studied seep carbonates from the Black Sea. Points of interest were selected by observation under a microscope. Main compositions of the points were measured by an energy-dispersive X-ray spectroscope. Mineral structure and spectroscopy characteristics were analysed by X-ray diffraction and Raman, respectively, and converted to MgCO₃ contents according to empirical formulas. Carbon and oxygen isotope compositions of fibrous carbonate minerals were measured by an isotope ratio mass spectrometer. The results suggest that the fibrous Mg calcite from the Black Sea were formed by sulphide-driven anaerobic oxidation of methane under reducing conditions, which contributes to the understanding of the formation of Neoproterozoic fibrous dolomite. |
| title | X-ray diffraction profiles, Raman spectra and carbon and oxygen isotope compositions of fibrous cement from Black Sea seeps |
| topic | BEAM; Beam trawl; Binary Object; Black Sea; BS346GR; Dolgovskoy mound; Fibrous magnesium calcite; File content; GeoB9908-1; Marine cement; MEGASEEBS_1993; Methane Gas Seep Explorations in the Black Sea; PO201F,G; POS201/6,7; POS201/6,7_UBS1; Poseidon; Professor Logachev; Romanian shelf; SD-AOM; Television-Grab; TTR-15; TVG; Ukrainian shelf |
| url | https://doi.org/10.1594/PANGAEA.964859 |