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SUMMARY:Relative contribution from comets and carbonaceous asteroids to th
 e Earth's volatile budget - Sarah Joiret (U Bordeaux)
DTSTART:20240312T130000Z
DTEND:20240312T140000Z
UID:TALK210835@talks.cam.ac.uk
CONTACT:Dr Emily Sandford
DESCRIPTION:Recent models of solar system formation suggest that a dynamic
 al instability among the giant planets happened within the first 100 Myr a
 fter disk dispersal\, perhaps before the Moon-forming impact. As a direct 
 consequence\, a bombardment of volatile-rich impactors may have taken plac
 e on Earth before internal and atmospheric reservoirs were decoupled. Howe
 ver\, such a timing has been interpreted to potentially be at odds with th
 e disparate inventories of Xe isotopes in Earth's mantle compared to its a
 tmosphere. In this seminar\, I will talk about the dynamical effects of an
  Early Instability on the delivery of carbonaceous asteroids and comets to
  Earth\, and address the implications for the Earth's volatile budget.
LOCATION:Ryle seminar room + ONLINE - Details to be sent by email
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