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In this paper we present the effects of different tracemakers on the redistribution of calcareous nannofossils throughout the K-Pg boundary at the Bidart section (SW France), along with their consequences for our knowledge of the K-Pg boundary event. Danian calcareous nannofossil assemblages are present in Maastrichtian samples due to infiltration into dark trace fossil infillings proceeding from...
Detailed field observations across and along the Cretaceous-Palaeogene (K-Pg) boundary interval in the Caravaca section, SE Spain, together with laboratory analyses reveal a well-developed lowermost Danian dark-colored trace fossil assemblage. The trace fossils range continuously from the bioturbated horizons in the dark boundary layer (lowermost Danian), to the uppermost Maastrichtian sediments....
In the Sandikli region of the Taurus Range of Turkey, greater than 3000 m in thickness metamorphosed siliciclastics and volcanics (Kocayayla Group) underlies the trilobite-and conodont-bearing Middle-Late Cambrian Hudai Quartzite and Caltepe Formation.The Kocayayla Group, previously regarded as Infracambrian or Precambrian, is dated for the first time as Early Cambrian on the basis of trace fossils...
Tiering patterns of trace fossils in flysch deposits are diversified. They are controlled mainly by the degree ofoxygenation of the sediment and the sedimentation rate. With respect to depth of burrowing, multi- and singlelayer colonizers of newly deposited turbidite layers are distinguished. The multi-layer colonizers begin to colonize the newly deposited turbidite layer from the deepest tiers.
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