[Baps] Ben Weiss talk Thursday at CfA

[Sarah Stewart-Mukhopadhyay]

 CfA Colloquium 21 November 2013

*Speaker: *Ben Weiss <http://web.mit.edu/bpweiss/> (MIT)

*Title: *Differentiated Planetesimals and the Parent Bodies of Meteorites

*Abstract:* Meteorites are samples of dozens of small planetary bodies that
formed in the early solar system. They exhibit great petrologic diversity,
ranging from primordial accretional aggregates (chondrites) to once fully
molten magmas (achondrites). It has long been thought that no single parent
body could be the source of more than one of these three meteorite
lithologies. Our magnetic measurements of meteorites, combined with a
diversity of other observations, suggest that some chondrites could in fact
be samples of the outer, unmelted crusts of otherwise differentiated
planetesimals with silicate mantles and metallic cores. This may have major
implications for the origin of meteorite groups, the rates and onset times
of accretion, mass and momentum transfer in the protoplanetary disk, and
the interior structures and histories of asteroids.

*Location:* Phillips Auditorium

Info: http://www.cfa.harvard.edu/events/colloquia/
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