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DESCRIPTION:Dr Olivier Warr\, Assistant Professor\, Department of Earth and
  Environmental Science\, University of Ottawa\n\n \n\nIncorporating the fu
 ll spectrum of geochronology in crustal fluids\; it’s about time\n\n \n\nM
 ardi 9 avril 2023 à 12h30 - Tuesday\, April 9\, 2023 at 12:30 pm\n\nLocal 
 PK-7605\, 7e étage\, 201 ave. du Président-Kennedy\n\nZoom: https://uqam.z
 oom.us/j/83216327466?pwd=WnZJNldCaS8xL1M4VDdadUVENHQ1dz09\n\nRésumé / abst
 ract:\n\nIn the brittle crust\, low temperature reactions and processes in
 volving host rocks and fluids drive local-global biogeochemical cycles. Pr
 oviding accurate timeframes on these processes allows conversion to rates 
 and allows temporal frameworks to be established and applied. This context
  means enhanced models can be generated exploring the production and accum
 ulation of resources such as groundwaters and hydrocarbons\, evaluating re
 positories for anthropogenic waste (nuclear\, CCS)\, constraining subsurfa
 ce biospheres\, and be applied to document the local-global geochemical cy
 cles at work in these settings. In this presentation\, the spectrum of geo
 chronologic tools used to document fluids will be examined\, including sho
 rt-lived isotopes (e.g. 3H\, 14C\, 81Kr) which are introduced at recharge 
 and progressively decrease over time through radioactive decay\, as well a
 s radiogenic noble gases (e.g. 4He\, 40Ar) which are produced and accumula
 te in the subsurface. In particular\, this study will focus on how short-l
 ived tracers may produce a temporal offset\, but how the full spectrum of 
 geochronologic tools can collectively be applied to provide temporal const
 raints and frameworks to critical subsurface processes and settings.\n
DTSTART:20240409T163000Z
DTEND:20240409T173000Z
SUMMARY:Geotop Seminar Series: Dr Olivier Warr 
URL:https://www.mcgill.ca/eps/channels/event/geotop-seminar-series-dr-olivi
 er-warr-356151
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