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Investigating the formation conditions of the first solids in the solar system using Large-Geometry SIMS - Webinar

Thursday, February 9, 2023

Dr Yves Marrocchi, deputy director at Centre de Recherches Pétrographiques et Géochimiques (CRPG, Nancy, France) will present recent petrographic observations and isotopic measurements of chondrules which shed new light on the timing of chondrule formation and how recycling processes during disk evolution led to the formation of chondrules.

Left-over solids from the evolution of the solar protoplanetary disk 4.56 Gyr ago, chondrites are composed in varying proportions of refractory inclusions, chondrules, Fe-Ni metal and matrix material. Chondrules represent the most abundant solids formed during the evolution of the protoplanetary disk. However, the conditions of formation of these primordial solids remains enigmatic and controversial. Further studies of these complex, silicate spherules necessitate analytical tools that combine high spatial resolution and ultra-high sensitivity, such as Large-Geometry Secondary Ion Mass Spectrometry (LG-SIMS).

About the presenter
Deputy director of the Centre de Recherches Pétrographiques et Géochimiques (CRPG, Nancy, France), Yves Marrocchi investigates the conditions of formation of the first solids in the solar system, the hydration conditions of asteroids and the physico-chemical conditions of their geological evolution during fluid circulations. After a PhD in rare gas geochemistry and a postdoc at Washington University in Saint Louis (USA), Yves joined CRPG in 2010. He has contributed to 130 publications in high impact journals and is a recognized expert in Secondary Ion Mass Spectrometry applied to cosmochemistry.