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The Mjølnir Impact Event and its Consequences pp 75–137Cite as

Impact Geophysics and Modelling

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Abstract

During impact, the passage of the shock wave results in extensive in situ fracturing and autochthonous target rock brecciation. Target material is excavated and ejected in ballistic trajectories upward and outward from the impact site. As excavation of the brecciated volume advances, the excavated crater is formed. It delimits the provenance of material expelled from the crater and provides the void space for subsequent infilling of allogenic material and breccia (e.g., Melosh 1989; Turtle et al. 2005). Therefore, the disturbance beneath Mjølnir is expected to be associated with two types of breccia: allochtonous and autochthonous (Tsikalas et al. 1998b, 1999).

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Authors and Affiliations

  1. Eni Norge AS, NO-4064, Stavanger, Norway

    Filippos Tsikalas

  2. Department of Geosciences, University of Oslo, Oslo, Norway

    Filippos Tsikalas

  3. Department of Geosciences, University of Oslo, NO-0316, Oslo, Norway

    Jan Inge Faleide

  4. Physics of Geological Processes, University of Oslo, NO-0316, Oslo, Norway

    Stephanie C. Werner & Trond Torsvik

  5. Iceland GeoSurvey, Reykjavik, Iceland

    Steinar Thor Gudlaugsson

  6. Department of Earth Science, University of Bergen, NO-5007, Bergen, Norway

    Olav Eldholm

Authors
  1. Filippos Tsikalas
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  2. Jan Inge Faleide
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  3. Stephanie C. Werner
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  4. Trond Torsvik
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  5. Steinar Thor Gudlaugsson
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  6. Olav Eldholm
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Correspondence to Filippos Tsikalas .

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Editors and Affiliations

  1. Dept. Geology, University of Oslo, Oslo, Norway

    Filippos Tsikalas

  2. Dept. Geology, University of Oslo, Oslo, Norway

    Henning Dypvik

  3. (NGU), Geological Survey Norway, Trondheim, Norway

    Morten Smelror

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Tsikalas, F., Faleide, J.I., Werner, S.C., Torsvik, T., Gudlaugsson, S.T., Eldholm, O. (2010). Impact Geophysics and Modelling. In: Tsikalas, F., Dypvik, H., Smelror, M. (eds) The Mjølnir Impact Event and its Consequences. Impact Studies. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-88260-2_4

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