Conditions of chondrule formation in ordinary chondrites
Chondrules are sub-millimetric spheroids that are ubiquitous in chondrites and whose
formation mechanism remains elusive. Textural and oxygen isotopic characteristics of …
formation mechanism remains elusive. Textural and oxygen isotopic characteristics of …
Trace element geochemistry of ordinary chondrite chondrules: The type I/type II chondrule dichotomy
We report trace element concentrations of silicate phases in chondrules from LL3 ordinary
chondrites Bishunpur and Semarkona. Results are similar to previously reported data for …
chondrites Bishunpur and Semarkona. Results are similar to previously reported data for …
Oxygen isotopic heterogeneities, their petrological correlations, and implications for melt origins of chondrules in unequilibrated ordinary chondrites
JL Gooding, TK Mayeda, RN Clayton… - Earth and Planetary …, 1983 - Elsevier
Ten whole chondrules separated from the Dhajala (H3, 4), Hallingeberg (L3), and
Semarkona (LL3) chondrites were individually analyzed for bulk element composition by …
Semarkona (LL3) chondrites were individually analyzed for bulk element composition by …
Isotopic evidence for two chondrule generations in CR chondrites and their relationships to other carbonaceous chondrites
Among primitive meteorites, CR chondrites have peculiar isotopic compositions, the origin of
which is uncertain and may have involved contributions from primordial molecular cloud …
which is uncertain and may have involved contributions from primordial molecular cloud …
Oxygen isotope compositions of chondrules in CR chondrites
We report in situ ion microprobe analyses of oxygen isotopic compositions of olivine, low-Ca
pyroxene, high-Ca pyroxene, anorthitic plagioclase, glassy mesostasis, and spinel in five …
pyroxene, high-Ca pyroxene, anorthitic plagioclase, glassy mesostasis, and spinel in five …
Oxygen isotopic diversity of chondrule precursors and the nebular origin of chondrules
FeO-poor (type I) porphyritic chondrules formed by incomplete melting of solid dust
precursors via a yet-elusive mechanism. Two settings are generally considered for their …
precursors via a yet-elusive mechanism. Two settings are generally considered for their …
Chondrules
B Zanda - Earth and Planetary Science Letters, 2004 - Elsevier
Chondrules are submillimeter spheres that constitute up to 80% of the volume of the most
primitive meteorites. That they result from the solidification of a melt in low-gravity in the early …
primitive meteorites. That they result from the solidification of a melt in low-gravity in the early …
Formation processes of compound chondrules in CV3 carbonaceous chondrites: Constraints from oxygen isotope ratios and major element concentrations
T Akaki, T Nakamura - Geochimica et Cosmochimica Acta, 2005 - Elsevier
We found thirty compound chondrules in two CV3 carbonaceous chondrites. The
abundance in each meteorite relative to single chondrules is 29/1846 (1.6%) in Allende and …
abundance in each meteorite relative to single chondrules is 29/1846 (1.6%) in Allende and …
Oxygen isotope evidence regarding the formation of spinel-bearing chondrules
S Maruyama, H Yurimoto, S Sueno - Earth and Planetary Science Letters, 1999 - Elsevier
Oxygen isotope compositions of individual mineral grains in two spinel-bearing chondrules
have been determined by secondary ion mass spectrometry. O isotope ratios of spinel …
have been determined by secondary ion mass spectrometry. O isotope ratios of spinel …
Petrology and oxygen isotope compositions of chondrules in E3 chondrites
Chondrules in E3 chondrites differ from those in other chondrite groups. Many contain near-
pure endmember enstatite (Fs< 1). Some contain Si-bearing FeNi metal, Cr-bearing troilite …
pure endmember enstatite (Fs< 1). Some contain Si-bearing FeNi metal, Cr-bearing troilite …