SUBLACUSTRINE MUD VOLCANOES AND METHANE SEEPS CAUSED BY DISSOCIATION OF GAS HYDRATES IN LAKE BAIKAL
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dc.contributor.author | Van Rensbergen P. | |
dc.contributor.author | De Batist M. | |
dc.contributor.author | Klerkx J. | |
dc.contributor.author | Hus R. | |
dc.contributor.author | Poort J. | |
dc.contributor.author | Vanneste M. | |
dc.contributor.author | Granin N. | |
dc.contributor.author | Khlystov O. | |
dc.contributor.author | Krinitsky P. | |
dc.date.accessioned | 2021-05-21T07:34:17Z | |
dc.date.available | 2021-05-21T07:34:17Z | |
dc.date.issued | 2002 | |
dc.identifier | https://www.elibrary.ru/item.asp?id=41907501 | |
dc.identifier.citation | Geology, 2002, 30, 7, 631-634 | |
dc.identifier.issn | 0091-7613 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/28462 | |
dc.description.abstract | Four lake-floor seeps have been studied in the gas-hydrate area in Lake Baikal's South Basin by using side-scan sonar, detailed bathymetry, measurements of near-bottom water properties, heat-flow measurements, and selected seismic profiles in relation to results from geochemical pore-water analysis. The seeps at the lake floor are identified as methane seeps and occur in an area of high heat flow, where the base of the gas-hydrate layer shallows rapidly toward the vent sites from ˜400 m to ˜150 m below the lake floor. At the site of the seep, a vertical fluid conduit disrupts the sedimentary stratification from the base of the hydrate layer to the lake floor. The seeps are interpreted to result from local destabilization of gas-hydrate caused by a pulse of hydrothermal fluid flow along an active fault segment. This is the first time that methane seeps and/or mud volcanoes associated with gas-hydrate destabilization have been observed in a sublacustrine setting. The finding demonstrates the potential of tectonically controlled gas-hydrate destabilization to cause extreme pore-fluid overpressure and short-lived mud volcanism. | |
dc.title | SUBLACUSTRINE MUD VOLCANOES AND METHANE SEEPS CAUSED BY DISSOCIATION OF GAS HYDRATES IN LAKE BAIKAL | |
dc.type | Статья |
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