Barred olivine chondrules in ordinary chondrites: Constraints on chondrule formation
Meteoritics & Planetary Science, 2023 AbstractIn general, barred olivine (BO) chondrules formed from completely melted precursors. Among BO chondrules in unequilibrated ordinary chondrites, there are significant positive correlations among chondrule diameter, bar thickness, and rim thickness.
Alan E. Rubin +4 more
openaire +1 more source
Th/U variability in Allende chondrules [PDF]
, 2020 International audience14 Lead isotope compositions were measured on both single and combined chondrules from the 15 CV3 carbonaceous chondrite Allende with the goal of determining the range of Th/U implied by 16 the radiogenic 208Pb*/206Pb* values.
Chaussidon, Marc +3 more
core +1 more source
Sectioning effects of porphyritic chondrules: Implications for the PP/POP/PO classification and correcting modal abundances of mineralogically zoned chondrules [PDF]
, 2020 International audienceMineralogically zoned chondrules are a common chondrule type in chondrites. They consist of olivine cores, surrounded by low‐Ca pyroxene rims.
Marrocchi, Yves +10 more
core +4 more sources
Mechanical Modification of Chondrule Fine-grained Rims by Dusty Nebular Shocks
The Planetary Science Journal, 2023 The mechanical processes that convert an initially fluffy chondrule fine-grained rim (FGR) into a more compact structure remain poorly characterized.
Augusto Carballido +3 more
doaj +1 more source
Formation of chondrules in magnetic winds blowing through the proto-asteroid belt [PDF]
, 2012 Chondrite meteorites are believed to represent the building blocks of the solar nebula, out of which our solar system formed. They are a mixture of silicate and oxide objects (chondrules and refractory inclusions) that experienced extremely high ...
Ireland, Trevor R., Salmeron, Raquel
core +1 more source
Constraining the Cooling Rates of Chondrules [PDF]
, 2020 The evolution of the protoplanetary disk is inferred in large part from chondritic meteorites which contain the oldest Solar System material. A major component of these meteorites are chondrules, small, ~mm, silicate melt droplets.
Stockdale, Shannon Charles
core +1 more source
Chondrules and nebular shocks [PDF]
Meteoritics & Planetary Science, 2002 Invited editorial in Meteoritics and Planetary Science, vol.
openaire +2 more sources
An Almahata Sitta EL3 fragment: implications for the complex thermal history of enstatite chondrites
Progress in Earth and Planetary Science, 2021 Almahata Sitta is a polymict breccia, consisting of many kinds of clasts. Here we present our mineralogical and petrological results on an EL3 fragment, MS-177 from Almahata Sitta.
M. Kimura +4 more
doaj +1 more source
Anorthite‐rich chondrules in CR and CH carbonaceous chondrites: Genetic link between calcium‐aluminum‐rich inclusions and ferromagnesian chondrules [PDF]
, 2002 Anorthite-rich chondrules in CR and CH carbonaceous chondrites consist of magnesian low-Ca pyroxene and forsterite phenocrysts, FeNi-metal nodules, interstitial anorthite, Al-Ti-Cr-rich low-Ca and high-Ca pyroxenes, and crystalline mesostasis composed of
Krot, Alexander N. +3 more
core +1 more source
Protracted Timescales for Nebular Processing of First-formed Solids in the Solar System
The Astrophysical Journal, 2023 The calcium–aluminum-rich inclusions (CAIs) from chondritic meteorites are the first solids formed in the solar system. Rim formation around CAIs marks a time period in early solar system history when CAIs existed as free-floating objects and had not yet
Prajkta Mane +3 more
doaj +1 more source