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Sublacustrine mud volcanoes and methane seeps caused by dissociation of gas hydrates in Lake Baikal.

Pieter Van Rensbergen UGent, Marc De Batist UGent, J Klerkx, Robert Hus, Jeffrey Poort UGent, Maarten Vanneste, N Granin, O Khlystov and P Krinitsky (2002) GEOLOGY. 30(7). p.631-634
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.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
gas hydrates, hydrothermal vents, Lake Baikal, methane, mud volcanoes, seepage
journal title
GEOLOGY
Geology
volume
30
issue
7
pages
631-634 pages
Web of Science type
Article
Web of Science id
000176607500013
JCR category
GEOLOGY
JCR impact factor
2.649 (2002)
JCR rank
1/34 (2002)
JCR quartile
1 (2002)
ISSN
0091-7613
language
English
UGent publication?
yes
classification
A1
id
163894
handle
http://hdl.handle.net/1854/LU-163894
date created
2004-01-14 13:39:00
date last changed
2009-05-02 14:06:53
@article{163894,
  abstract     = {Four lake-floor seeps have been studied in the gas-hydrate area in Lake Baikal{\textquoteright}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.},
  author       = {Van Rensbergen, Pieter and De Batist, Marc and Klerkx, J and Hus, Robert and Poort, Jeffrey and Vanneste, Maarten and Granin, N and Khlystov, O and Krinitsky, P},
  issn         = {0091-7613},
  journal      = {GEOLOGY},
  keyword      = {gas hydrates,hydrothermal vents,Lake Baikal,methane,mud volcanoes,seepage},
  language     = {eng},
  number       = {7},
  pages        = {631--634},
  title        = {Sublacustrine mud volcanoes and methane seeps caused by dissociation of gas hydrates in Lake Baikal.},
  volume       = {30},
  year         = {2002},
}

Chicago
Van Rensbergen, Pieter, Marc De Batist, J Klerkx, Robert Hus, Jeffrey Poort, Maarten Vanneste, N Granin, O Khlystov, and P Krinitsky. 2002. “Sublacustrine Mud Volcanoes and Methane Seeps Caused by Dissociation of Gas Hydrates in Lake Baikal.” Geology 30 (7): 631–634.
APA
Van Rensbergen, P., De Batist, M., Klerkx, J., Hus, R., Poort, J., Vanneste, M., Granin, N., et al. (2002). Sublacustrine mud volcanoes and methane seeps caused by dissociation of gas hydrates in Lake Baikal. GEOLOGY, 30(7), 631–634.
Vancouver
1.
Van Rensbergen P, De Batist M, Klerkx J, Hus R, Poort J, Vanneste M, et al. Sublacustrine mud volcanoes and methane seeps caused by dissociation of gas hydrates in Lake Baikal. GEOLOGY. 2002;30(7):631–4.
MLA
Van Rensbergen, Pieter, Marc De Batist, J Klerkx, et al. “Sublacustrine Mud Volcanoes and Methane Seeps Caused by Dissociation of Gas Hydrates in Lake Baikal.” GEOLOGY 30.7 (2002): 631–634. Print.