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

Publikation: Bidrag til bog/rapport/konferenceproceedingsBogkapitelForskningpeer review

4 Citationer (Scopus)

Abstrakt

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.

OriginalsprogEngelsk
TitelDeltas: Sites and traps for fossil fuels
RedaktørerM.K.G. Whateley, K.T. Pickering
ForlagGeological Society of London
Sider139-146
Antal sider8
ISBN (Trykt)0-632-02385-6
DOI
StatusUdgivet - 1989
Udgivet eksterntJa

Publikationsserier

NavnGeological Society Special Publication
ForlagGeological Society of London
Vol/bind41
ISSN (Trykt)0305-8719

Emneord

  • sedimentology
  • Lacustrine mudstones
  • Palaeogene
  • Nuussuaq Basin

Programområde

  • Programområde 3: Energiressourcer

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