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- W4285267042 abstract "Summary Contourites contribute to the shaping and building of continental margins, and have an economic importance for the offshore-energy sector by acting both as reservoir and seal rock. Here we study the different contourites of the northern North Sea, North Sea Fan and mid-Norwegian margin formed in the Neogene and Quaternary, which are unconventional targets in the region. Based on extensive 3D reflection seismic data combined with borehole data, we suggest that fine-grained drifts form regionally large and thick accumulations, while relatively coarse-grained sediment deposits develop locally. Sourced from the East Shetland Platform and the northern North Sea, the contour currents transported the available sediments northwards, where the regional physiography enhanced the ocean currents and hosted contouritic deposition. The Pliocene to early-Quaternary contourites are characterized by continuously laminated sediments, and most likely contain gas-charged sands in selected locations. Trapped by megaslide escarpments, the late-Quaternary contourites have a transparent facies, most likely representing fine-grained muds. The contourites to the north of the North Sea Fan are further sealed by a bottom-simulating reflection, indicating the presence of a gas-hydrate barrier. Contourites are thus a promising unconventional play model in the region, but caution is required when interpreting the sedimentologic characteristics of these deposits." @default.
- W4285267042 created "2022-07-14" @default.
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- W4285267042 date "2022-01-01" @default.
- W4285267042 modified "2023-09-26" @default.
- W4285267042 title "Contourites of the Northern North Sea, North Sea Fan, and Mid-Norwegian Margin" @default.
- W4285267042 doi "https://doi.org/10.3997/2214-4609.202210247" @default.
- W4285267042 hasPublicationYear "2022" @default.
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