Mines of mars tsearch free#
Continuing work in this area seeks to determine the extent and volume of this isolated hydrosphere to determine the relationship of the free flowing fracture waters to trapped fluid inclusions and to determine the habitability of this exotic realm of the deep subsurface and its implications for the search for extinct or extaĬurrently recruiting new positions. Most recently, by incorporating conservative noble gas tracers, Sherwood Lollar’s work has demonstrated the extreme antiquity of these hydrogeologically ancient fracture waters – with residence times ranging from tens of millions of years in the Witwatersrand basin ( Lippmann-Pipke et al (2011) Chemical Geology) to billions of years in the Timmins mine in Northern Ontario Canada ( Holland et al., 2013 Nature: ( Warr et al (2018) Geochimica et Cosmochimica Acta). In 2006, in Science, Sherwood Lollar and colleagues in microbiology ( Lin et al., 2006) demonstrated the role of such H2-rich fluids in sustaining chemolithotrophic microbial communities at 2.8 km below the surface in the deep gold mines of South Africa – one of the deepest microbial ecosystems yet discovered.
Subsequent papers provided isotopic models to deal with the difficult problem of distinguishing between abiotically generated hydrocarbons and conventional biologically-produced methane ( Sherwood Lollar et al (2006) Chemical Geology 2008 GCA : Etiope & Sherwood Lollar ( 2013) Reviews of Geophysics) and are highly cited not only in hydrocarbon geochemistry but by colleagues in astrobiology and space exploration. Her 2002 paper, highlighted on the cover of Nature,demonstrated that saline groundwaters in hydrogeologically isolated fracture networks in such ancient crystalline rock were dominated by the products of water-rock interaction including both mM concentrations of hydrogen derived from radiolysis and serpentinization and abiogenic hydrocarbon gases produced via Fischer-Tropsch synthesis and polymerization reactions ( Sherwood Lollar et al., 2002). Sherwood Lollar’s pioneering research on the geochemistry of deep crustal fluids has focused on fracture fluids 1-3 km deep in Precambrian Shield rocks across Canada, Fennoscandian and South Africa.
Research Program in Ancient Waters and Deep Subsurface Biosphereĭr.
Past-President of the Geochemical Society 2014-2015Ĭlick here for The Sherwood Lollar Research Group Website Patterson Award in Environmental Geochemistry from the Geochemical SocietyĢ019 Fellow of the Geochemical Society and the European Association of GeochemistryĢ019 CIFAR Fellow and Co-Director of research program “Earth 4D – Subsurface Science and Exploration”Ģ018 Geological Association of Canada Logan MedalĢ016 Appointed Companion of the Order of CanadaĢ016 Royal Society of Canada Bancroft MedalĢ014 Helmholtz International Fellow AwardĢ012 GSA Geobiology & Geomicrobiology Division Award Miller Medal in Earth SciencesĢ019 Fellow of the Royal Canadian Geographical SocietyĢ019 Fellow of the Royal Society of LondonĢ019 C.C. Norman Keevil Chair in Ore Deposits GeologyĮ-mail: the most up-to-date information on the Sherwood Lollar Research group, please visit: See Barb Profiled in thes NSERC videos:Ģ019 Herzberg Gold Medal winner Barbara Sherwood Lollar click here.Ģ021 Election to United States National Academies – NAEĢ020 Canada Council for the Arts- Killam Prize for Natural SciencesĢ020 Royal Society of Canada Willet G.
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