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SUMMARY:What’s in an impact record? Using impact records to study the co
 mposition\, age\, and structure of planetary crusts - Ya Huei Huang - Mass
 achusetts Institute of Technology
DTSTART:20221123T160000Z
DTEND:20221123T170000Z
UID:TALK182078@talks.cam.ac.uk
CONTACT:Yihe Xu
DESCRIPTION:The Moon serves as a cornerstone for understanding the early e
 volution of the terrestrial planets\, most notably the Archean Earth and p
 re-Noachian Mars. Its lack of plate tectonics and significant weathering m
 eans that the Moon preserves the one of the most pristine records of many 
 geological processes including planet differentiation\, crust formation\, 
 magmatic activities\, andimpact cratering.Studying this record requires co
 nstraining the lunar geological chronology\; impact craters\, calibrated w
 ith in- situ returned samples\, are a common dating metric that can be der
 ived from remote sensing data. Because impacts vary in a wide range of siz
 es from meteoroid impacts to basin formation\, deciphering the temporal an
 d spatial variation of impacts in the returned sample to calibrate such re
 cords is challenging. In this talk\, I introduce approaches and observatio
 ns that are useful to improve our understanding about the earliest impact 
 record and crustal evolution of the Moon\, and by proxy\, the other terres
 trial planets. I summarize the talk by discussing future key challenges.
LOCATION:Wolfson Lecture Theatre (virtual)
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