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Observation of microbial carbonate build-ups growing at methane seeps near the upper boundary of the gaszhydrate stability zone in the Black sea IBSS Repository
Gulin, S. B.; Greinert, J.; Egorov, V. N.; De Batist, M.; Artemov, Yu. G..
Extensive dredge sampling carried out in May-June 2004 in the deeper part of the Dnepr paleo-delta area (NW Black Sea) yielded for the first time chimney-shaped carbonate microbial build-ups, which occur at methane seeps close to upper boundary of the gas-hydrate stability zone (~ 700 m). Carbonate samples taken with a benthic trawl represent fragments of the uppermost, middle and lowest parts of the build-up; they are similar morphologically to those found previously at the shallower and deeper methane seeps in the Black Sea. At the same time, the perforated, plate-like carbonates in the lowest parts of the build-up provide first indications that gas channels are formed during the earliest growth phase of these microbial structures. Stable carbon isotope...
Tipo: Journal Contribution Palavras-chave: Black Sea; Methane seepage; Gas hydrates; Черное море; Метановые сипы; Газогидраты Methane Gas hydrates Gas seepages Methane http://aims.fao.org/aos/agrovoc/c_4784.
Ano: 2005 URL: http://repository.ibss.org.ua/dspace/handle/99011/215
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