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UID:078794fa-9455-47e1-acdf-37bb7e77a7c5@nexttoyou
DTSTAMP:20261106T171853Z
DTSTART:20261119T210000Z
DTEND:20261119T220000Z
SUMMARY:Geology & Environmental Science Colloquium: Dr. Cari Corrigan | Sm
 ithsonian Institution’s National Museum of Natural History
LOCATION:Thaw Hall 104\, 3943 O'Hara Street\, Pittsburgh\, PA 15213
DESCRIPTION:Evidence of Impact Melting in Iron Meteorites\n\nPresented by 
 Dr. Cari Corrigan | Research Geologist and Curator of Meteorites\, Smiths
 onian Institution’s National Museum of Natural History\n\nTalk Abstract:\
 n\nOf the ~1250 recognized iron meteorites\, ~10% are compositionally dis
 tinct\, and thus termed “ungrouped”. Among these\, iron meteorite impact 
 melts are exceptionally rare\, despite the fact that iron meteorite paren
 t bodies\, exposed cores of larger differentiated protoasteroids\, must h
 ave experienced a violent impact history. While a few iron meteorites may
  exhibit impact melt features\, others\, including an anomalously high nu
 mber of Antarctic iron meteorites\, also contain anomalously low volatile
  siderophile element concentrations attributed to impact devolatilization
 . Here\, we present results of a three-dimensional (3D) μXCT study of sul
 fide (troilite\, FeS) inclusions in ungrouped irons that are suggestive o
 f formation by diapiric rise of troilite through (partially?) molten meta
 l after impact melting.\n\nBiography:\n\nCari Corrigan is a Research Geol
 ogist and Curator of Meteorites at the Smithsonian Institution’s National
  Museum of Natural History in Washington DC. Standing on the shoulders of
  Pitt Professor Bill Cassidy and former Ph.D. student Ralph Harvey\, she 
 curates the US Antarctic Meteorite Collection and has classified over 700
 0 meteorites during her time at the Smithsonian. Her scientific interest 
 is in the petrology and geochemistry of chondrites\, differentiated mater
 ia\n\nhttp://next-to-u.app/events/078794fa-9455-47e1-acdf-37bb7e77a7c5
URL:http://next-to-u.app/events/078794fa-9455-47e1-acdf-37bb7e77a7c5
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