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TitleThe shallow stratigraphy and geohazards of the Northeast Baffin Shelf and Lancaster Sound
AuthorBennett, R; Campbell, D C; Furze, M F A
SourceBulletin of Canadian Petroleum Geology vol. 62, no. 4, 2014 p. 217-231,
Alt SeriesEarth Sciences Sector, Contribution Series 20130342
PublisherCanadian Society of Petroleum Geologists
Mediaon-line; digital; paper
File formatpdf
ProvinceNorthern offshore region; Nunavut
NTS15M; 15N; 16C; 16D; 16E; 16F; 16K; 16L; 16M; 16N; 25M; 25N; 25O; 25P; 26; 27; 28; 29C; 29D; 29E; 29F; 35O; 35P; 36A; 36B; 36G; 36H; 36I; 36J; 36M; 36N; 36O; 36P; 37; 38; 39A; 39B; 39C; 39D; 46M; 46N; 46O; 46P; 47; 48; 49A; 49B; 49C; 49D
AreaBaffin Bay; Lancaster Sound; Greenland; Denmark
Lat/Long WENS-90.0000 -50.0000 78.0000 62.0000
Subjectsmarine geology; fossil fuels; stratigraphy; surficial geology/geomorphology; hydrocarbon potential; hydrocarbons; marine deposits; marine sediments; glacial deposits; glacial features; ice scours; scour marks; slope deposits; slope failures; slope stability; seismicity; seismic risk; Baffin Island shelf
Illustrationslocation maps; schematic diagrams; profiles; tables; photographs
ProgramMarine Geohazards, Public Safety Geoscience
Released2015 03 24
AbstractHydrocarbon resource potential and a growing population have increased the need for new marine infrastructure in the Baffin Bay region. Before determining the viability of any seabed development, scientific understanding of geological hazards is essential. For this study, high resolution geophysical data and sediment samples on the Northeast Baffin Shelf and Lancaster Sound were analyzed to develop a shallow geological framework for the area and determine the distribution and severity of seabed hazards. The modern seafloor morphology and shallow stratigraphy are strongly influenced by past glacial processes. The Northeast Baffin Shelf consists of glacially eroded transverse troughs separated by flat-topped banks where glacial ice-contact and ice-proximal sediments rest on bedrock and are overlain discontinuously by postglacial sand or mud of various thickness. Lancaster Sound, which was occupied by glacial ice during the last glaciation, shares a similar shallow stratigraphy. Geohazards in the Baffin region differ from elsewhere on Canada's eastern continental margin. It is a seismically-active passive margin and its Arctic location means the area is more prone to the effects of iceberg scour and sea ice. Geohazards on the Baffin Shelf include hydrocarbon venting features, uneven seabed caused by glacial seabed features, seabed instability and sediment transport at trough margins, ice scour, and a high level of seismic activity.
Summary(Plain Language Summary, not published)
Hydrocarbon resource potential and a growing population in the Baffin Bay region have increased the possibility of new marine infrastructure. Before determining the viability of any seabed development, scientific understanding of natural seabed hazards (geohazards) is essential. Geohazards in the Baffin region are different from elsewhere in Canada. Baffin Bay is one of the most seismically active areas in Canada, and its Arctic location means the area is full of icebergs and sea ice for much of the year. Other geohazards observed in Baffin Bay are natural oil and gas seepage, uneven seabed, and submarine landslides.