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SUMMARY:The formation and early evolution of the Solar System: An oxygen i
 sotope perspective - Richard Greenwood (OU)
DTSTART:20200310T120000Z
DTEND:20200310T130000Z
UID:TALK136726@talks.cam.ac.uk
CONTACT:Oliver Shorttle
DESCRIPTION:High-precision oxygen isotope analysis has proved to be a powe
 rful technique for investigating early Solar System processes. In particul
 ar\, oxygen isotopic mass-independent variation measured in meteorites and
  their components probably reflects differences that were acquired as a re
 sult of UV photo-dissociation of CO in the precursor giant molecular cloud
  from which the Solar System formed.  Oxygen isotopes provide a powerful m
 eans of assessing the extent to which early-formed asteroids underwent mel
 ting and homogenisation\, with chondrites and primitive achondrites showin
 g high levels of heterogeneity\, whereas differentiated achondrites show o
 nly minimal variation.  Oxygen isotopes are an essential tool in fingerpri
 nting different groups of meteorites and have played a central role in und
 erstanding the nature of the Moon-forming giant impact. High-precision oxy
 gen isotope analysis is likely to be an important analytical technique in 
 the study of samples returned from primitive asteroids by the Japanese spa
 cecraft Hayabusa2 later this year and by the NASA OSIRIS-REx mission in 20
 23.\n
LOCATION:Tilley Lecture Theatre\, Department of Earth Sciences
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