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Browsing by Subject "sequence stratigraphy"

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  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    Wykorzystanie sejsmostratygrafii do rozpoznania rozkładu mioceńskich facji zbiornikowych w północno-wschodniej części zapadliska przedkarpackiego
    (Wydawnictwa AGH, 2010) Pietsch, Kaja; Porębski, Szczepan J.; Marzec, Paweł 
    Sedimentological and seismostratigraphic interpretation of a dip cross-section located in the northwestern part of the Wielkie Oczy Graben, across the Markowice - Lubliniec elevation and farther to the NE resulted in the identification of the base-Sarmatian angular unconformity (UNO) and allowed to subdivide the Machów Formation into seven genetic sequences composed mainly of deltaic deposits. The unconformity reflects extension episode superimposed on regional south-westward rotation of the basin floor and is overstepped and upplapped towards the NE by deltaic bodies fed from an southerly (orogenic) source. The upplaping pinchouts may form combined, structural-stratigraphic traps for methane generated in delta front-prodelta heteroliths. Unconformity UNO is farther to the SE overlain locally by gas-bearing massive sandstones of intrabasinal or northerly provenience, and similar sandstones may be expected to occur in the study area below the belt of upplapping pinch-outs.