Sediment deformation atop the Lomonosov Ridge, central Arctic Ocean: Evidence for gas-charged sediment mobilization?

Sediment deformation atop the Lomonosov Ridge, central Arctic Ocean: Evidence for gas-charged sediment mobilization?

We have used a hovercraft platform drifting with the sea ice to acquire the first digitally recorded seismic reflection data transects across the Canada/Greenland (89°N-85°N) section of the Lomonosov Ridge, central Arctic Ocean. The flat-lying, laterally uniform Cenozoic sediment package on top of t...

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Veröffentlicht in:Marine and petroleum geology 2022-04, Vol.138, p.105555, Article 105555
Hauptverfasser: Kristoffersen, Yngve, Hall, John K., Nilsen, Espen Harris
Format: Artikel
Sprache:eng
Schlagworte:
Arctic ocean
Continental sliver
Expulsion pipe
Gas
Lomonosov ridge
Pockmark
Seismic amplitude anomalies
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Zusammenfassung:We have used a hovercraft platform drifting with the sea ice to acquire the first digitally recorded seismic reflection data transects across the Canada/Greenland (89°N-85°N) section of the Lomonosov Ridge, central Arctic Ocean. The flat-lying, laterally uniform Cenozoic sediment package on top of the ridge at 87°N, 60° W shows at least four sites with local seismic amplitude anomalies. The common feature is a column (
ISSN:0264-8172
1873-4073
DOI:10.1016/j.marpetgeo.2022.105555