Early solar system solids: geochemistry and dynamics

This thesis focuses on the history of early solar system solids. We study the dynamics of chondrite components and find their preservation over a few Ma in the protoplanetary disk to necessitate a dead zone. These dynamics are primarily governed by a gas-solid decoupling parameter S which we conjecture was 1 when carbonaceous and non-carbonaceous chondrites accreted, respectively. We also study reduced models for the interaction between magnetohydrodynamic turbulence and dust settling and the linear streaming instability. We measure trace element concentrations in chondrule phases in Vigarano, Renazzo, Acfer 187, Bishunpur and Sahara 97096. Olivine in type I chondrules seems to result from batch crystallization whereas pyroxene records rapid cooling rates and is consistent with gas-melt interaction.

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Source https://theses.hal.science/tel-00761687
Author Jacquet, Emmanuel
Maintainer CCSD
Last Updated June 1, 2026, 21:14 (UTC)
Created June 1, 2026, 21:14 (UTC)
Identifier tel-00761687
Language fr
Rights https://about.hal.science/hal-authorisation-v1/
contributor Laboratoire de Minéralogie et Cosmochimie du Muséum (LMCM) ; Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)
creator Jacquet, Emmanuel
date 2012-06-18T00:00:00
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harvest_source_id 3374d638-d20b-4672-ba96-a23232d55657
harvest_source_title test moissonnage SELUNE
metadata_modified 2023-03-24T00:00:00
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