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Microbial communities and mass extinctions¦Online meeting

5 June, 7:30 pm-9:30 pm

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246 available Online Meeting RSVP with link "Once someone asked me, ‘it must be very depressing working on extinction events!’ …but no, it’s not, because with extinction events, evolution of life occurs, and that’s pretty exciting." Professor Kliti Grice FAA of the School of Earth and Planetary Sciences at Curtin University

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Our presenter at tonight’s ONLINE meeting will be Prof. Kliti Grice (John Curtin Distinguished Professor). Kliti Grice is Founding Director of WA-Organic and Isotope Geochemistry Centre, School of Earth and Planetary Sciences at Curtin University

Prof. Grice will discuss how microbial communities were associated with mass extinctions and their role in exceptional fossil preservation. The largest mass extinction, about 252 Ma years ago (the end-Permian event), occurred when climate forces led to low atmospheric oxygen levels with a parallel rise in concentrations of carbon dioxide and hydrogen sulfide. The ocean circulation became highly sluggish, and some 90 per cent of marine and 75 per cent of terrestrial species became extinct. This event contrasts markedly with the end-Cretaceous extinction event that destroyed the non-avian dinosaurs. The end-Permian event was not initiated by a meteorite impact but by climatic effects related to the aggregation of the supercontinent Pangea and volcanism released from the Siberian traps.

Details

Date:
5 June
Time:
7:30 pm-9:30 pm
Event Categories:
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Event Tags:

Venue

ONLINE
Australia

Organiser

Steve Lofthouse
Phone:
0439009525
Email:
lofthousesnt@gmail.com

Other

Speaker
Prof. Kliti Grice
Topic
Mass extinction events