| Title | Volcanic mercury and mutagenesis in land plants during the end-Triassic mass extinction |
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| Author | Lindström, S; Sanei, H ; van de Schootbrugge, B; Pedersen, G K; Lesher, C E; Tegner, C; Heynisch, C; Dybkjaer, K; Outridge, P M |
| Source | Science Advances vol. 5, issue 10, eaaw4018, 2019 p. 1-13, https://doi.org/10.1126/sciadv.aaw4018  Open Access |
| Image |  |
| Year | 2019 |
| Alt Series | Natural Resources Canada, Contribution Series 20190564 |
| Publisher | American Association for the Advancement of Science |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf; html |
| Province | Canada; British Columbia; Alberta; Saskatchewan; Manitoba; Ontario; Quebec; New Brunswick; Nova Scotia; Prince Edward Island; Newfoundland and Labrador; Northwest Territories; Yukon; Nunavut;
Canada |
| NTS | 1; 2; 3; 10; 11; 12; 13; 14; 15; 16; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30; 31; 32; 33; 34; 35; 36; 37; 38; 39; 40; 41; 42; 43; 44; 45; 46; 47; 48; 49; 52; 53; 54; 55; 56; 57; 58; 59; 62; 63; 64; 65;
66; 67; 68; 69; 72; 73; 74; 75; 76; 77; 78; 79; 82; 83; 84; 85; 86; 87; 88; 89; 92; 93; 94; 95; 96; 97; 98; 99; 102; 103; 104; 105; 106; 107; 114O; 114P; 115; 116; 117; 120; 340; 560 |
| Area | World |
| Lat/Long WENS | -180.0000 180.0000 90.0000 -90.0000 |
| Subjects | environmental geology; tectonics; geochemistry; geochronology; paleontology; stratigraphy; Nature and Environment; Science and Technology; mercury geochemistry; fossil plants; spores; extinctions,
biotic; tectonic history; volcanism; paleoenvironment; environmental studies; correlations; isotopic studies; carbon isotopes; radiometric dating; uranium lead dating; organic carbon; biostratigraphy; Central Atlantic Magmatic Province;
Triassic-Jurassic Boundary; Genetics; Phanerozoic; Mesozoic; Jurassic; Triassic |
| Illustrations | correlation charts; photomicrographs; tables; profiles; lithologic sections; biostratigraphic charts |
| Released | 2019 10 23 |
| Abstract | During the past 600 million years of Earth history, four of five major extinction events were synchronous with volcanism in large igneous provinces. Despite improved temporal frameworks for these
events, the mechanisms causing extinctions remain unclear. Volcanic emissions of greenhouse gases, SO2, and halocarbons are generally considered as major factors in the biotic crises, resulting in global warming, acid deposition, and ozone layer
depletion. Here, we show that pulsed elevated concentrations of mercury in marine and terrestrial sediments across the Triassic-Jurassic boundary in southern Scandinavia and northern Germany correlate with intense volcanic activity in the Central
Atlantic Magmatic Province. The increased levels of mercury-the most genotoxic element on Earth-also correlate with high occurrences of abnormal fern spores, indicating severe environmental stress and genetic disturbance in the parent plants. We
conclude that this offers compelling evidence that emissions of toxic volcanogenic substances contributed to the end-Triassic biotic crisis. |
| GEOSCAN ID | 321883 |
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