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West to East?: Belgian Tsunami at the Lower Younger Dryas Boundary
event December 31, 2011 comment One Comment

Below is an excerpt from the Field Notes of the Andronikov expedition to inspect the black mat in Europe. At a site just west of Lommel, Holland they find an intriguing feature (above) that some interpret as possibly being a signature of an ancient tsunami at the onset of the Younger Dryas.

I located on Google Earth what appears to be the archeological site where they took the samples and then I plotted the distance to the sea. The Lommel-Maatheide site is 70 miles from the sea (a very flat seventy miles).

I have needled these Dutch guy’s in the past but the Tusk is warming to them. From the field notes it seems they are keeping an open mind — and speculating. Good stuff.

Lommel-Maatheide is the exact site where Tian et al. (2010) reported a presence of nanodiamonds from around the Usselo Horizon. At this site, the Usselo Horizon represented by the organic-rich dark material distinctly shows a transition from being a land originated close analogue of the black mat of North America (samples 2 LOM11; Fig. 16) through the peat-bearing material generated in thewet environment (samples 2A-LOM11; Fig. 17) to the sheer aquatic-related Usselo Horizon represented by a thick (20-30 cm) layer of peat (samples 2B-LOM11; Fig. 18). A very interesting and unusual structure of the disturbance can be observed in a peat layer of the Usselo Horizon(Fig. 19). This structure was interpreted [sic] as a possible fingerprint of a paleotsunami. Providing the age of the Usselo Horizon, such a tsunami might be related to the impact in question. Other interpretations related for example to the permafrost, however, are also possible. But the origin of the observed structure should be a matter of an independent study and in the moment is beyond the scope of our work. All three cross-sections of the exposed Usselo Horizon sequence in Lommel-Maatheide where sampled for the material from the Horizon itself, and from the over and underlying sediments (Fig. 20).

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