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  • "acid capacitor"; Center for Marine Environmental Sciences; CO2 release; File content; File format; File name; File size; MARUM; MPT; pyrite oxidation; sea level; Uniform resource locator/link to file  (1)
  • 18O; Brine pool; Cavity ring-down spectroscopy (CRDS), L21301i, Picarro Inc.; Center for Marine Environmental Sciences; ClusterOceanFloor; dD; DEPTH, sediment/rock; GC; GeoB24324-2; GPF 19-2-007H; Gravity corer; MARUM; Mediterranean Ridge accretionary complex; Mediterranean Sea; mud volcano; Olimpi mud volcano field; pore water; R/V SONNE; SO278; SO278_24-2; Sonne_2; The Ocean Floor - Earth's Uncharted Interface; water isotopes; δ18O, porewater; δ18O, porewater, standard deviation; δ Deuterium; δ Deuterium, standard deviation  (1)
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  • 1
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    Stable oxygen and hydrogen isotopic composition of pore water (δ18O; δD) of sediment core GeoB24324-2 (2023)
    PANGAEA
    Details
    Publication Date: 2024-03-15
    Description: The samples are retrieved from sediment core GeoB24324-2 (Brine pool; 0-445 cm) in the Olimpi mud volcano field, located south of Crete at the Mediterranean Ridge accretionary complex. Hydrogen (δD) and oxygen (δ18O) isotopes were analysed in the sediment geochemistry laboratory at MARUM using a Picarro 2130i CRD System. Approximately 2 mL of the onboard extracted pore water was used per measurement. The results are an average of at least three injections, while a total of 9 injections of 7 µL each have been analysed per sample. Results are reported in delta notation (‰) relative to V-SMOW2 -SLAP2 with nominal standard (std) deviation of 0.03 for δ18O and 0.3 for δD. Actual std deviation is between 0.02 and 0.29 for δ18O and between 0.04 and 1.68 for δD.
    Keywords: 18O; Brine pool; Cavity ring-down spectroscopy (CRDS), L21301i, Picarro Inc.; Center for Marine Environmental Sciences; ClusterOceanFloor; dD; DEPTH, sediment/rock; GC; GeoB24324-2; GPF 19-2-007H; Gravity corer; MARUM; Mediterranean Ridge accretionary complex; Mediterranean Sea; mud volcano; Olimpi mud volcano field; pore water; R/V SONNE; SO278; SO278_24-2; Sonne_2; The Ocean Floor - Earth's Uncharted Interface; water isotopes; δ18O, porewater; δ18O, porewater, standard deviation; δ Deuterium; δ Deuterium, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 20 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    Pyrex 10.10 Model of pyrite oxidation on shelves over the Quaternary (2019)
    PANGAEA
    In:  Supplement to: Kölling, Martin; Bouimetarhan, Ilham; Bowles, Marshall W; Felis, Thomas; Hinrichs, Kai-Uwe; Schulz, Michael; Zabel, Matthias (2019): Consistent CO2 release by pyrite oxidation on continental shelves prior to glacial terminations. Nature Geoscience, 12, 929-934, https://doi.org/10.1038/s41561-019-0465-9
    Details
    Publication Date: 2024-05-27
    Description: This worksheet comprises a forward model of pyrite oxidation on exposed shelves over the Quaternary. Assuming the acid generated by pyrite oxidation during glacial exposure of shelves is fully buffered by carbonate dissolution, it calculates the oxygen consumption and CO2 release forced by this process. As the length of interglacials is not long enough to fully restock the pyrite reservoir (= "acid capacitor"), pyrite is gradually leached from the shelf along a descending pyrite oxidation front. This way, CO2 release by this process is increasingly retarded throughout the Quaternary to occur at ever-lower sea level. File 5: model worksheet including the code which is implemented in Excel. We recommend using Excel 2003 for Windows to run the model File 6: animiated view of a model run (MP4 file) File 7: Result of the reference model run in Koelling et al (2019)
    Keywords: "acid capacitor"; Center for Marine Environmental Sciences; CO2 release; File content; File format; File name; File size; MARUM; MPT; pyrite oxidation; sea level; Uniform resource locator/link to file
    Type: Dataset
    Format: text/tab-separated-values, 15 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
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