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Early Cretaceous tectonostratigraphic evolution of the north central Barents Sea

机译：巴伦支海北部中部的早白垩世构造地层演化

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摘要

In this paper we investigate the structural evolution of the northcentral Barents Sea during the Early Cretaceous, and the influence of fault activity on the sedimentation pattern in the area. This is achieved by integrating 2D seismic data, two exploration wells and information of available shallow cores from the Norwegian and Russian sectors. As a result of our work, three fault families, two Lower Cretaceous seismic sequences and seven seismic fades, were interpreted in the area. During the Hauterivian-Early Barremian (sequence 1), a syn-tectonic phase is observed, where fault families 1 and 2 of Late Paleozoic age were reactivated as reverse faults and induced the inversion of NE-SW and E-W structural highs that controlled deposition in the Kong Karls Land Platform, North Barents Basin and the newly formed Olga Basin. During Early Barremian-Early Aptian (sequence 2), the study area was marked by a tectonically quiescent period, where the increase of clastic supply from the N-NE was responsible for progradation of the system towards the S-SW Barents Sea. The progradation was controlled and routed by structural highs inherited from the Hauterivian-Early Barremian inversion.
机译：本文研究了白垩纪早期中北部巴伦支海的构造演化，以及断层活动对该地区沉积模式的影响。这是通过整合2D地震数据，两个勘探井以及来自挪威和俄罗斯地区的可用浅层岩心的信息来实现的。由于我们的工作，该地区解释了三个断层家族，两个下白垩统地震序列和七个地震衰落。在Hauterivian-Early Barremian（序列1）期间，观察到一个同构造相，在古生代晚期断层族1和2被重新激活为反向断层，并诱导了NE-SW和EW结构高压的反转，从而控制了沉积Kong Karls陆地平台，北Barents盆地和新成立的Olga盆地。在巴雷米亚早期至Apty早期（序列2）期间，研究区域以构造静止期为标志，N-NE碎屑供应的增加导致该系统向S-SW巴伦支海发展。这种增长是由从Hauterivian-Early Barremian反演继承的结构高点控制和传递的。

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  • 来源
    《Journal of geodynamics》 |2018年第9期|183-198|共16页
  • 作者

    Kairanov B.; Escalona A.; Mordasova A.; Sliwinska K.; Suslova A.;

  • 作者单位

    Univ Stavanger, Dept Petr Engn, N-4036 Stavanger, Norway;

    Univ Stavanger, Dept Petr Engn, N-4036 Stavanger, Norway;

    Lomonosov Moscow State Univ, Geol Fac, Moscow, Russia;

    Geol Survey Denmark & Greenland GEUS, Oster Voldgade 10, DK-1350 Copenhagen, Denmark;

    Lomonosov Moscow State Univ, Geol Fac, Moscow, Russia;

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