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SUMMARY:Exo-mineralogy: Predicting the interior compositions of rocky exop
 lanets - Rob Spaargaren
DTSTART:20241022T120000Z
DTEND:20241022T130000Z
UID:TALK222175@talks.cam.ac.uk
CONTACT:Dr Dolev Bashi
DESCRIPTION:On rocky planets\, the atmosphere forms and evolves under cons
 tant interaction with the interior. The efficiency of this interaction\, a
 nd the way it shapes the atmosphere\, is dependent on the interior dynamic
 s and surface tectonics of those planets. In trying to understand how exop
 lanet diversity affects these processes\, the diversity of interior chemis
 try remains under-explored. In this talk\, I will present my work on const
 raining the potential compositions of rocky exoplanets\, and how this affe
 cts long-term evolution of the interior and surface.\nRocky planets have a
  genetic compositional link with their host star\, and stellar abundance o
 bservations\, which are readily available\, can be used to constrain bulk 
 rocky exoplanet compositions. Based on these bulk compositions\, thermodyn
 amic models are used to predict their mantle mineralogy and exo-surface co
 mpositions\, which can then be used in a mantle dynamics model to simulate
  the long-term evolution of interior dynamics and surface tectonics of the
 se planets. I will present how accounting for compositional diversity lead
 s to classes of planets with mantles too weak to maintain crustal recyclin
 g\, planets with dense crust that accumulates at the bottom of the mantle\
 , and some more exotic types of planets where we need more experimental da
 ta to fully constrain their atmospheric evolution and potential habitabili
 ty.
LOCATION:Ryle seminar room + ONLINE - Details to be sent by email
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