Lein, Alla Yu; Gorshkov, Anatoly I; Pimenov, Nikolay V; Bogdanov, Yury A; Vogt, Peter R; Bogdanova, Olga Yu; Kuptsov, Vladimir M; Ul'yanova, Nina V; Sagalevich, Anatoly M; Ivanov, Mikhail V (2000): Chemical and isotopic compositions of samples from the Haakon Mosby mud volcano and nearby [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.784671, Supplement to: Lein, AY et al. (2000): Authigenic carbonates in methane seeps from the Norwegian Sea: Mineralogy, geochemistry, and genesis. Translated from Litologiya i Poleznye Iskopaemye, 2000, 4, 339-354, Lithology and Mineral Resources, 35(4), 295-310, https://doi.org/10.1007/BF02782686
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Abstract:
Authigenic carbonates in the caldera of an Arctic (72°N) submarine mud volcano with active methane-bearing fluid discharge are formed at the bottom surface during anaerobic microbial methane oxidation. The microbial community consists of specific methane-producing bacteria, which act as methanotrophic ones in conditions of excess methane, and sulfate reducers developing on hydrogen, which is an intermediate product of microbial CH4 oxidation. Isotopically light carbon (aver. d13C = -28.9 per mil) of CO2 produced during CH4 oxidation is the main carbonate carbon source. Heavy oxygen isotope ratio (aver. d18O = 5 per mil) in carbonates is inherited from seawater sulfate. Rapid sulfate reduction (up to 12 mg S/dm**3/day) results in total exhausting of sulfate ion in the upper sediment layer (10 cm). Because of this carbonates can only be formed in surface sediments near the water-bottom interface. Salinity as well as CO3/Ca and Mg/Ca ratios correspond to the field of non-magnesian calcium carbonate precipitation. Calcite is the dominant carbonate mineral in the methane seep caldera, where it occurs in the paragenetic association with barite. Radiocarbon age of carbonates is about 10 Ka.
Project(s):
Archive of Ocean Data (ARCOD)
Coverage:
Median Latitude: 72.003874 * Median Longitude: 14.727172 * South-bound Latitude: 72.000800 * West-bound Longitude: 14.715100 * North-bound Latitude: 72.008000 * East-bound Longitude: 14.749400
Event(s):
AMK40-3745-M1-1 * Latitude: 72.002600 * Longitude: 14.715100 * Elevation: -1268.0 m * Location: Norwegian Sea * Campaign: AMK40 * Basis: Akademik Mstislav Keldysh * Method/Device: MIR-1 deep-sea manned submersible (MIR-1)
AMK40-3745-M1-7 * Latitude: 72.002600 * Longitude: 14.715100 * Elevation: -1268.0 m * Location: Norwegian Sea * Campaign: AMK40 * Basis: Akademik Mstislav Keldysh * Method/Device: MIR-1 deep-sea manned submersible (MIR-1)
AMK40-3754-M2-3 * Latitude: 72.002900 * Longitude: 14.722200 * Elevation: -1260.0 m * Location: Norwegian Sea * Campaign: AMK40 * Basis: Akademik Mstislav Keldysh * Method/Device: MIR-2 deep-sea manned submersible (MIR-2)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
4 datasets
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Datasets listed in this publication series
- Lein, AY; Gorshkov, AI; Pimenov, NV et al. (2000): (Table 1) Chemical composition of carbonate bodies from the caldera of the Haakon Mosby mud volcano. https://doi.org/10.1594/PANGAEA.784666
- Lein, AY; Gorshkov, AI; Pimenov, NV et al. (2000): (Table 3) Isotopic composition of oxygen and hydrogen in seawater, interstitial water, and gas hydrate, area of the Haakon Mosby mud volcano. https://doi.org/10.1594/PANGAEA.784668
- Lein, AY; Gorshkov, AI; Pimenov, NV et al. (2000): (Table 4) Radiocarbon datings of the authigenic carbonate buildup from Site AMK40-3745-M1-7. https://doi.org/10.1594/PANGAEA.784669
- Lein, AY; Gorshkov, AI; Pimenov, NV et al. (2000): (Table 5) Average chemical and isotopic compositions of waters from the caldera of the Haakon Mosby mud volcano. https://doi.org/10.1594/PANGAEA.784670