Chondrule heritage and thermal histories from trace element and oxygen isotope analyses of chondrules and amoeboid olivine aggregates
Emmanuel Jacquet,Yves Marrocchi +1 more
Reads0
Chats0
TLDR
In this paper, combined oxygen isotope and mineral-scale trace element analyses of amoeboid olivine aggregates (AOA) and chondrules in ungrouped carbonaceous chondrite, Northwest Africa 5958.Abstract:
We report combined oxygen isotope and mineral-scale trace element analyses of amoeboid olivine aggregates (AOA) and chondrules in ungrouped carbonaceous chondrite, Northwest Africa 5958. The trace element geochemistry of olivine in AOA, for the first time measured by LA-ICP-MS, is consistent with a condensation origin, although the shallow slope of its rare earth element (REE) pattern is yet to be physically explained. Ferromagnesian silicates in type I chondrules resemble those in other carbonaceous chondrites both geochemically and isotopically, and we find a correlation between 16O enrichment and many incompatible elements in olivine. The variation in incompatible element concentrations may relate to varying amounts of olivine crystallization during a subisothermal stage of chondrule-forming events, the duration of which may be anticorrelated with the local solid/gas ratio if this was the determinant of oxygen isotopic ratios as proposed recently. While aqueous alteration has depleted many chondrule mesostases in REE, some chondrules show recognizable subdued group II-like patterns supporting the idea that the immediate precursors of chondrules were nebular condensates.read more
Citations
More filters
Journal ArticleDOI
Formation of CV chondrules by recycling of amoeboid olivine aggregate-like precursors
Yves Marrocchi,Romain Euverte,Johan Villeneuve,Valentina Batanova,Benoit Welsch,Ludovic Ferrière,Emmanuel Jacquet +6 more
TL;DR: The authors studied porphyritic olivine-rich chondrules of the carbonaceous chondrite Kaba (CV3) by combined high-resolution X-ray mapping, quantitative electron microprobe analyses, and oxygen isotopic analyses via secondary ion mass spectrometry.
Journal ArticleDOI
Oxygen isotopic diversity of chondrule precursors and the nebular origin of chondrules
TL;DR: In this paper, a method combining high-current electron microprobe X-ray mapping and quantitative measurements was proposed to determine the chemical characteristics of relict olivine grains inherited from chondrule precursors.
Journal ArticleDOI
Origin of isolated olivine grains in carbonaceous chondrites
TL;DR: In this paper, microscopic, cathodoluminescence, chemical, and O isotopic measurements of FeO-poor isolated olivine grains (IOG) in the carbonaceous chondrites Allende (CV3), Northwest Africa 5958 (C2•ung), Central Africa 11086 (CM2•an), and Allan Hills 77307 (CO3.0) are reported.
Journal ArticleDOI
Rapid condensation of the first Solar System solids
Yves Marrocchi,Yves Marrocchi,Johan Villeneuve,Emmanuel Jacquet,Maxime Piralla,Marc Chaussidon +5 more
TL;DR: A multiisotope (O, Si, Mg) characterization of AOAs is performed to constrain the conditions under which they condensed and the information they bear on the structure and evolution of the Solar protoplanetary disk.
Journal ArticleDOI
Mineralogically zoned chondrules in ordinary chondrites as evidence for open system chondrule behaviour
Jens Barosch,Dominik C. Hezel,Dominik C. Hezel,Denton S. Ebel,Denton S. Ebel,Denton S. Ebel,Pia Friend,Pia Friend +7 more
TL;DR: The authors studied the textures of ∼650 chondrules from all three groups (H, L, LL) of ordinary chondrites, in 2-dimensional (2D) sections through the meteorites.
References
More filters
Journal ArticleDOI
Solar System Abundances and Condensation Temperatures of the Elements
TL;DR: In this article, solar photospheric and meteoritic CI chondrite abundance determinations for all elements are summarized and the best currently available photosphere abundances are selected, including the meteoritic and solar abundances of a few elements (e.g., noble gases, beryllium, boron, phosphorous, sulfur).
Journal ArticleDOI
A Compilation of New and Published Major and Trace Element Data for NIST SRM 610 and NIST SRM 612 Glass Reference Materials
Nicholas J. G. Pearce,William T. Perkins,John A. Westgate,Michael P. Gorton,Simon E. Jackson,Clive R. Neal,Simon P. Chenery +6 more
TL;DR: In this article, the authors present a compilation of trace element data from approximately sixty published works for NIST SRM 611 and NISTSRM 613 and provide useful new working values for these reference materials.
Journal ArticleDOI
Rare-earth abundances in chondritic meteorites
TL;DR: In this article, 15 chondrites, including eight carbonaceous chondites, were analyzed for rare earth element abundances by isotope dilution, and the persistence of anomalies in chondritic materials relatively removed from direct condensational processes implies that anomalous components were introduced at a late stage of chondrite formation.
Journal ArticleDOI
Condensation in the primitive solar nebula
TL;DR: In this article, the distribution of the major elements between vapor and solid has been calculated for a cooling gas of cosmic composition, assuming that high temperature condensates remain in equilibrium with the vapor, affecting the temperatures of appearance of successively less refractory phases.