VOLCANIC INDUCED ENVIRONMENTAL STRESS DURING THE END-TRIASSIC EVENT
In order to assess volcanic induced environmental stress from the CAMP across the TJB we compare two proxies that may both, each in their own way, indicate volcanic pollution, namely aberrant spores/pollen and mercury loading. The quantitative abundances of aberrant, i.e. abnormal, and thus probably non-viable pollen and spores are often used to assess environmental impact at polluted sites. Today the primary anthropogenic phytotoxic air pollutants include fluoride, O3, and SO2. In deep-time, volcanism would basically be the only source that provided larger amounts of e.g. flourides and SO2 to the atmosphere. Similarly, mercury (Hg) is one of the most toxic elements on the planet, with volcanic emissions providing the largest natural input to the Hg-cycle. The temporal distribution of Hg in relation to organic matter can provide evidence of atmospheric Hg loading on the marine ecosystem. We will present and compare the mercury and aberrant spore/pollen records from the stratigraphically well-constrained Triassic-Jurassic boundary successions in the Danish and German Basins, and discuss the possible impact of these data on the interpretation of events during end-Triassic biotic crisis.