Barbara Sherwood Lollar
Barbara Sherwood Lollar, Companion of the Order of Canada and Fellow of the Royal Society of Canada, is a University Professor in Earth Sciences at the University of Toronto. She is a Canada Research Chair in Isotopes of the Earth and Environment, Norman Keevil Chair in Ore Deposit Geology, and Past-President of the Geochemical Society. In 2015 she was named a Fellow of the American Geophysical Union and in 2019 a Fellow of the Geochemical Society and European Association of Geochemistry. Sherwood Lollar has published on stable isotope geochemistry and hydrogeology, the fate of carbon-bearing fluids and gases such as CO2, CH4 and H2 in ancient fracture waters in the Earth’s crust, and deep subsurface microbiology. She has been a recipient of many academic awards.
Daniel Ariztegui is a Professor at the University of Geneva. He uses marine and lacustrine sediments as archives of (paleo) environmental changes as well as of present and former anthropogenic impact on the environment. Over time his research has shifted from marine to lacustrine records, currently he focuses mainly on biogeochemical cycles in lakes, with interest in both microbe-mineral interactions and organomineralization and the lacustrine subsurface biosphere. For the latter he participated in several deep lake drilling campaigns of the International Continental Drilling Program (ICDP), e.g. Dead Sea, Lake Chalco in Patagonia and Lake Towuti in Indonesia. He applies a geomicrobiological approach to modern environments and develops microbial proxies that can be used to identify microbial processes in the past.