Abstract
We use seismic reflection data to correlate deposits related to the 40km-diameter Mjølnir marine impact crater to two boreholes; one near the center of the crater and another ~30 km outside the crater periphery. This correlation provides a detailed seismic stratigraphy for the impact-related deposits and post-impact strata. The biostratigraphic 142 ± 2.6 Ma age for the event determined earlier at the base of the post-impact succession should be considered a minimum impact age. This is because considerable thickening of the immediately post-impact deposits in the annular trough implies that the impact event may be slightly older, but still within the Upper Volgian.
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Tsikalas, F., Faleide, J.I., Eldholm, O., Dypvik, H. (2002). Seismic Correlation of the Mjølnir Marine Impact Crater to Shallow Boreholes. In: Plado, J., Pesonen, L.J. (eds) Impacts in Precambrian Shields. Impact Studies. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-05010-1_13
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DOI: https://doi.org/10.1007/978-3-662-05010-1_13
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