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Chondritic Components 2
Friday, August 2, 2024, 1:30 PM
Albert II Auditorium
Chairs:
Jens Barosch
Pierre-Etienne Martin
Pierre-Etienne Martin
1:30 PM
Hammett M.*
Jones R. H.
Nagashima K.
Krot A. N.
Greenwood R. C.
et al.
Oxygen-Isotope Heterogeneity of Coarse-Grained Igneous CAIs in CV Chondrites: An Experimental Study of Gas-Melt Exchange
[#6170]
Experiments between Type B CAI melt and CO-CO2 gas test gas-melt oxygen isotope exchange during igneous CAI melting and crystallisation, to evaluate models of mineral oxygen isotope heterogeneity in coarse-grained CAIs from CV chondrites.
Experiments between Type B CAI melt and CO-CO2 gas test gas-melt oxygen isotope exchange during igneous CAI melting and crystallisation, to evaluate models of mineral oxygen isotope heterogeneity in coarse-grained CAIs from CV chondrites.
1:45 PM
Charlier J.*
Aléon J.
Aléon-Toppani A.
Pont S.
Onset of CAI Alteration in CM Chondrites: Link with Their Host Lithology
[#6372]
Through a large-scale systematic study of over 1,400 CAIs in CM chondrites, we aim to understand the links that may exist between CAI populations (size, primary and secondary mineralogy) and the degree of aqueous alteration of their host lithologies.
Through a large-scale systematic study of over 1,400 CAIs in CM chondrites, we aim to understand the links that may exist between CAI populations (size, primary and secondary mineralogy) and the degree of aqueous alteration of their host lithologies.
2:00 PM
Martin P-E. M. C.*
Daly L.
Villeneuve J.
Lee M. R.
Marrocchi Y.
On the Origin of the Compound-Chondrule-CAI Components Within CM Chondrites
[#6106]
Study of three compound-chondrule-calcium-aluminium-rich inclusions (CCCAIs) using O isotope analysis to determine the origin of their CAI and chondrule components and compare them with their regular counterparts within CM (Mighei-like) lithologies.
Study of three compound-chondrule-calcium-aluminium-rich inclusions (CCCAIs) using O isotope analysis to determine the origin of their CAI and chondrule components and compare them with their regular counterparts within CM (Mighei-like) lithologies.
2:15 PM
Marrocchi Y.*
Jacquet E.
Villeneuve J.
Pinto G. A.
Neukampf J.
Size-Dependent Oxygen Isotopic Variations in Chondrules of Ordinary Chondrites
[#6008]
In-situ measurements reveal the presence of size-dependent oxygen isotopic variations in chondrules in ordinary chondrites with small chondrules (<300 µm in diamter) showing heterogeneous mass-independent isotopic variations.
In-situ measurements reveal the presence of size-dependent oxygen isotopic variations in chondrules in ordinary chondrites with small chondrules (<300 µm in diamter) showing heterogeneous mass-independent isotopic variations.
2:30 PM
Barosch J.*
Zhang M.
Kitajima K.
Tenner T. J.
Weisberg M. K.
et al.
Two CR Chondrule Populations (On and Off the PCM Line) Resolved by SIMS High-Precision O3-Isotope Analysis
[#6178]
We analyzed O three-isotope CR chondrules by SIMS and distinguish two populations based on their position relative to the primitive chondrule minerals (PCM) line.
We analyzed O three-isotope CR chondrules by SIMS and distinguish two populations based on their position relative to the primitive chondrule minerals (PCM) line.
2:45 PM
Jacquet E.*
Marrocchi Y.
Mahlé T.
Villeneuve J.
Piralla M.
et al.
The Last Nebular Chondrules
[#6010]
The most 16O-depleted fraction of the CRHB porphyritic chondrules may represent the last generation of nebular chondrules, as the disk was being dissipated.
The most 16O-depleted fraction of the CRHB porphyritic chondrules may represent the last generation of nebular chondrules, as the disk was being dissipated.
3:00 PM
Sanders I. S.*
Were Some Chondrules Made by the Disassembly of Moon-Sized Molten Bodies?
[#6203]
Expanding on the idea that chondrules are frozen spray from the collisional disassembly of molten planetary bodies, the likelihood that some of those bodies were >1000 km in radius has significant implications.
Expanding on the idea that chondrules are frozen spray from the collisional disassembly of molten planetary bodies, the likelihood that some of those bodies were >1000 km in radius has significant implications.
3:15 PM
Gruyer C. C. S.*
Franchi I. A.
Grady M.
Anand M.
Zhao X.
et al.
H2O Abundance and H Isotopic Composition of Nominally Anhydrous Minerals from Enstatite Meteorites
[#6289]
We investigated the H2O abundance and H isotopy of NAMs from a suite of ECs and 1 aubrite; similarity in H isotopy between Earth mantle and E3/E4 NAMS and their significant H2O content support the idea that they contributed to Earth's H2O budget.
We investigated the H2O abundance and H isotopy of NAMs from a suite of ECs and 1 aubrite; similarity in H isotopy between Earth mantle and E3/E4 NAMS and their significant H2O content support the idea that they contributed to Earth's H2O budget.
*presenter
