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TitleMud volcanoes and ice-keel ploughmarks, Beaufort Sea shelf, Arctic Canada
AuthorDowdeswell, J A; Todd, B J
SourceAtlas of Submarine Glacial Landforms: Modern, Quaternary and Ancient; Geological Society Memoir vol. 46, 2016 p. 299-300, https://doi.org/10.1144/M46.102
Year2016
Alt SeriesEarth Sciences Sector, Contribution Series 20140559
PublisherGeological Society of London (London)
Documentbook
Lang.English
Mediapaper; on-line; digital
File formatpdf
ProvinceNorthern offshore region
AreaBeaufort Sea Sshelf
Lat/Long WENS-134.5833 -134.5167 70.8000 70.7917
Lat/Long WENS-134.7500 -134.7500 70.7861 70.7806
Subjectsseafloor landforms; marine transgression; plough marks; drifting ice; sediment extrusion
Illustrationslocation maps; bathymetric profiles
ProgramMarine Geohazards, Public Safety Geoscience
AbstractThe shallow shelf waters of the Beaufort Sea have experienced marine transgression during the Holocene (Hill et al. 1985; Taylor et al. 2013). This has led to a warming of what was terrestrial permafrost by water incursion, and to the dissociation of subsurface gas hydrates which now vent into marine waters. Accompanying this change is the development of conical submarine landforms produced through the extrusion of sediments, combined with the continuing reworking of the seafloor by the ploughing action of the keels of drifting ice.
Summary(Plain Language Summary, not published)
The shallow shelf waters of the Beaufort Sea have experienced marine transgression during the Holocene. This has led to a warming of what was terrestrial permafrost by water incursion, and to the release of subsurface gas hydrates which now vent into marine waters. Accompanying this change is the development of conical submarine landforms produced through the extrusion of sediments, combined with the continuing reworking of the seafloor by the ploughing action of the keels of drifting ice.
GEOSCAN ID296217