A fluvial-dominated lacustrine delta in a volcanic province, W Greenland

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A 50 m thick sequence of dark grey to black non-marine shales are exposed in a 12 km section along the NE coast of Disko in W Greenland. The shales are sandwiched between sandy fluvial deposits, and the sedimentological logs demonstrate a marked lateral continuity of facies within the shale unit. The shale is fissile and micaceous, and contains locally comminuted plant debris. The average total organic carbon (TOC) content is 6%, the organic matter corresponds to type III kerogen and the dominant clay mineral is kaolinite. The shale unit constitutes one coarsening-upward sequence interpreted as lacustrine prodelta mud, with thin sheets of sand deposited from density underflows which pass transitionally up into cross-laminated mouth-bar sand finally overlain by cross-bedded sand deposited in fluvial channels. This sequence represents progradation of a fluvial-dominated delta into a lake partially bounded by subaqueous hyaloclastic breccias.

Original languageEnglish
Title of host publicationDeltas: Sites and traps for fossil fuels
EditorsM.K.G. Whateley, K.T. Pickering
PublisherGeological Society of London
Number of pages8
ISBN (Print)0-632-02385-6
Publication statusPublished - 1989
Externally publishedYes

Publication series

NameGeological Society Special Publication
PublisherGeological Society of London
ISSN (Print)0305-8719

Programme Area

  • Programme Area 3: Energy Resources


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