Cyclic sedimentation in a large wave- and storm-dominated anoxic lake; Kap Stewart Formation (Rhaetian-Sinemurian), Jameson Land, East Greenland

G. Dam, F. Surlyk

    Publikation: Bidrag til bog/rapport/konferenceproceedingsBogkapitelForskningpeer review

    77 Citationer (Scopus)

    Abstrakt

    During Rhaetian-Sinemurian times a large wave- and storm-dominated lake was situated in the Jameson Land Basin, East Greenland. Sandy and pebbly alluvial material was transported into the lake from source areas to the east, west and north. Lake deposits consist of alternating black unfossiliferous mudstones and sheet sandstones. A high-resolution sequence-stratigraphic interpretation of the succession suggests that the mudstones were deposited in periods of rising and large highstands of lake level, whereas progradation of the deltaic sheet sandstones took place during forced regressions, caused by significant falls. The lake thus experienced abundant high-frequency and fairly high-amplitude changes in level. These high-frequency lake-level changes may reflect Milankovitch-type climatic cycles. The lake-level curve is interpreted to show a high-periodicity climatically induced signal superimposed on a long-periodicity eustatic signal. -from Authors

    OriginalsprogEngelsk
    TitelSequence stratigraphy and facies associations
    RedaktørerHenry W. Posamentier, Colin P. Summerhayes, Bilal U. Haq, George P. Allen
    ForlagWiley
    Kapitel21
    Sider419-448
    Antal sider30
    ISBN (Trykt)0-632-03548-X
    DOI
    StatusUdgivet - 1993

    Publikationsserier

    NavnSEPM Special Publications
    ForlagSEPM Society for Sedimentary Geology
    Vol/bind18
    ISSN (Trykt)1060-071X

    Programområde

    • Programområde 3: Energiressourcer

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