The age of microbial carbonate structures grown at methane seeps in the Black Sea with an implication of dating of the seeping methane

Гулин, С. Б.; Polikarpov, G.G.; Егоров, В. Н.

doi:10.1016/s0304-4203(03)00103-8

Cited by 34 publications

(31 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…How the CH 4 concentration and AOM rate distributions in the water column are maintained with this small diffusive source of CH 4 from sediments is a major puzzle. The recently reported seeps [7][8][9][10][11][12][13][14] Fig. 1).…”

Section: Introductionmentioning

confidence: 97%

“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14]). Concentration and oxidation rate measurements of CH 4 dissolved in the water column and sediments [1][2][3][4][5][6] have been used to assemble CH 4 geochemical budgets for the entire Black Sea [1] and the north-western shelf [5].…”

Section: Introductionmentioning

confidence: 99%

“…During the last decade, numerous seeps and mud volcanoes, emitting or capable of emitting CH 4 , have been identified on the shelf and slope of the northern Black Sea [7][8][9][10][11]. Methane clathrate hydrates (clathrates), an important global CH 4 reservoir estimated to contain over 10 3 times more CH 4 than the atmosphere [15], are also present in deep Black Sea sediments [11,12], and represent an unknown CH 4 source.…”

Section: Introductionmentioning

confidence: 99%

“…We have no explanation for this finding; a possible reason why this CH 4[S] is not radiocarbon-free is that CH 4 , generated from late Eocene source rock [53], acquires CH 4 with modern radiocarbon contents during transit through recently deposited sediments. Gulin et al [8] indirectly estimated the radiocarbon content of Black Sea CH 4[S] assuming that carbonate in structures formed around CH 4 seeps [10] is formed from a mixture of seawater bicarbonate and the product of AOM. Their results (8.5 to 10.6 kA 14 C BP or 34.7 to 26.7 pMC) were calculated from measurements of CH 4 (δ 13 C), seawater bicarbonate (δ 13 C and radiocarbon), and the carbonate structures formed around 230 m deep CH 4 seeps (δ 13 C and radiocarbon) located ca.…”

Section: Introductionmentioning

confidence: 99%

“…Equations describing the isotopic content of the reactant and product were established by Bigeleisen and Wolfsberg [54] and the isotopic fraction factors specific to AOM have been previously quantified [49,55,56]. Gulin et al [8] did not account for isotopic fractionation caused by AOM and their range of δ 13 C values of Black Sea carbonate structures did not include other reports of values up to 10‰ heavier [10,13]. These two factors cause the upper range reported by Gulin et al [8] to increase to 18.2 kA 14 C BP (or 10.4 pMC), and show how sensitive their indirect analysis is to parameter changes.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Basin-wide estimates of the input of methane from seeps and clathrates to the Black Sea

Kessler

Reeburgh

Southon

et al. 2006

Earth and Planetary Science Letters

View full text Add to dashboard Cite

Numerous methane-emitting bottom features, such as seeps, methane clathrate hydrates (clathrates), and mud volcanoes, have been identified recently in the Black Sea. The fluxes of methane from these sources averaged over large spatial scales are unknown. Here we take advantage of the fact that the Black Sea is a semi-enclosed basin with restricted deep water circulation to establish firstorder estimates of basin-wide fluxes of methane from these sources to the water column and atmosphere. First, we measured the natural radiocarbon content of methane ( 14 C-CH 4 ) dissolved in the water column and emitted from seeps. The 14 C-CH 4 results showed that the dominant source of methane to the water column is emitted from seeps and a smaller source is diagenetically produced in relatively modern sediments. The 14 C-CH 4 results were then used to partition a basin-wide total methane budget; this analysis estimated the basin-wide flux of methane from seeps and clathrates to the water column to be 3.60 to 4.28 Tg yr − 1 . Second, a geochemical box model was used to calculate possible distributions of methane inputs from seeps and clathrates as well as provide additional estimates of the basin-wide flux of methane from seeps and clathrates to the water column (4.95 to 5.65 Tg yr − 1 ).

show abstract

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Basin-wide estimates of the input of methane from seeps and clathrates to the Black Sea

Kessler

Reeburgh

Southon

et al. 2006

Earth and Planetary Science Letters

View full text Add to dashboard Cite

show abstract

Bivalve shell horizons in seafloor pockmarks of the last glacial‐interglacial transition: a thousand years of methane emissions in the Arctic Ocean

Ambrose

Panieri

Schneider

et al. 2015

Geochem Geophys Geosyst

View full text Add to dashboard Cite

We studied discrete bivalve shell horizons in two gravity cores from seafloor pockmarks on the Vestnesa Ridge (∼1200 m water depth) and western Svalbard (79°00′ N, 06°55′ W) to provide insight into the temporal and spatial dynamics of seabed methane seeps. The shell beds, dominated by two genera of the family Vesicomyidae: Phreagena s.l. and Isorropodon sp., were 20–30 cm thick and centered at 250–400 cm deep in the cores. The carbon isotope composition of inorganic (δ13C from −13.02‰ to +2.36‰) and organic (δ13C from −29.28‰ to −21.33‰) shell material and a two‐end member mixing model indicate that these taxa derived between 8% and 43% of their nutrition from chemosynthetic bacteria. In addition, negative δ13C values for planktonic foraminifera (−6.7‰ to −3.1‰), concretions identified as methane‐derived authigenic carbonates, and pyrite‐encrusted fossil worm tubes at the shell horizons indicate a sustained paleo‐methane seep environment. Combining sedimentation rates with 14C ages for bivalve material from the shell horizons, we estimate the horizons persisted for about 1000 years between approximately 17,707 and 16,680 years B.P. (corrected). The seepage event over a 1000 year time interval was most likely associated with regional stress‐related faulting and the subsequent release of overpressurized fluids.

show abstract

Oceanic Methane Biogeochemistry

2007

View full text Add to dashboard Cite

show abstract

The age of microbial carbonate structures grown at methane seeps in the Black Sea with an implication of dating of the seeping methane

Cited by 34 publications

References 12 publications

Basin-wide estimates of the input of methane from seeps and clathrates to the Black Sea

Basin-wide estimates of the input of methane from seeps and clathrates to the Black Sea

Bivalve shell horizons in seafloor pockmarks of the last glacial‐interglacial transition: a thousand years of methane emissions in the Arctic Ocean

Oceanic Methane Biogeochemistry

Contact Info

Product

Resources

About