Schedule and Deadlines

***Update on Conference dinner on 31st August***

The restaurant location for the dinner on Thursday evening has changed to Restaurant Loxton, located at Rue du Pont 22, 1003 Lausanne. It is about a 3 minute walk from Flon metro station. Dinner will start at 19:30.


A conference to look back, celebrate, and pay tribute to Dr. Aymon Baud’s, fifty years of continuous Permian-Triassic field research and corresponding publications produced in part with the help of SNSF (Swiss National Science Foundation) and in association with University of Lausanne, Switzerland.

The historical section of Nammal Gorge (Salt Ranges, Pakistan) with Aymon Baud (left) on the end-Permian great extinction level, Maurizio Gaetani showing a possible position of the Permian-Triassic boundary within basal Triassic crinoidal dolomite beds, and down the complete disagreement expressed by Tim Tozer about this boundary position.


General scientific themes will be organized in six plenary sessions over three days, starting August 30, 2023, with an opening ceremony and plenary session highlighting new results from the Permian-Triassic scientific program in Switzerland.

This “Across the End Permian Great Extinction” Conference will provide a forum for multiple aspect of Permian to Triassic field research results. Topics include, but are not limited to, new proposed correlations between Arctic Laurasia, Gondwana, Cimmeria and S China, new time calibrations, biochronology and absolute dating, biotic responses to extreme climatic and environmental crises, time specific facies such as red ammonoid limestone and sponge microbial buildups, new geochemical tools and modelling. With the participation of several specialists from the Scientific committee giving talks, it will also be open to all researchers wishing to present their results related to the conference theme.

The conference will end on September 2 with a field trip to local Triassic outcrops, including the Anisian limestone of Saint-Triphon, the late Triassic salt mine of Bex and a look at local vineyard growth on Triassic rocks. Evening meal will be held in a Prealpine chalet.

Social activities

Social activities include the welcome party and reception on Tuesday August 29 as well as a visit to the Geological Exhibitions in the Lausanne Center Palais de Rumine and a conference dinner.


Scientific Committee:


  • Benoit Beauchamp (University of Calgary)
  • Hugo Bucher (University of Zurich),
  • Charles Henderson (University of Calgary)
  • Nicolas Goudemand (ENS Lyon)
  • Jonathan Payne (Stanford)
  • Sara Pruss (Smith College, Northampton, MA).

Lausanne Organizing Committee, Earth Sciences Institute:


  • Allison Daley
  • Michel Jaboyedoff
  • Jean-Luc Epard
  • Torsten Vennenann
  • Thierry Adatte.

Coordinator: Aymon Baud.