Size-frequency distributions and physical properties of chondrules from x-ray computed microtomography and digital data extraction.
Sign Up to like & getrecommendations! Published in 2021 at "Microscopy research and technique"
DOI: 10.1002/jemt.24043
Abstract: Within this work, we present the first true three-dimensional (3D) analysis of chondrule size. Knowledge about the physical properties of chondrules is important for validating astrophysical theories concerning chondrule formation and their aggregation into the… read more here.
Keywords: size; methodology; size frequency; chondrule ... See more keywords
Evidence for accretion of fine-grained rims in a turbulent nebula for CM Murchison
Sign Up to like & getrecommendations! Published in 2017 at "Earth and Planetary Science Letters"
DOI: 10.1016/j.epsl.2017.10.029
Abstract: Abstract We use X-ray computed tomography (XCT) to examine the 3D morphology and spatial relationship of fine-grained rims (FGRs) of Type I chondrules in the CM carbonaceous chondrite Murchison to investigate the formation setting (nebular… read more here.
Keywords: grained rims; murchison; fine grained; turbulent nebula ... See more keywords
Fe isotope composition of bulk chondrules from Murchison (CM2): Constraints for parent body alteration, nebula processes and chondrule-matrix complementarity
Sign Up to like & getrecommendations! Published in 2018 at "Earth and Planetary Science Letters"
DOI: 10.1016/j.epsl.2018.03.013
Abstract: Abstract Chondrules are a major constituent of primitive meteorites. The formation of chondrules is one of the most elusive problems in cosmochemistry. We use Fe isotope compositions of chondrules and bulk chondrites to constrain the… read more here.
Keywords: isotope; murchison; parent body; bulk ... See more keywords
Time and duration of chondrule formation: Constraints from 26Al-26Mg ages of individual chondrules
Sign Up to like & getrecommendations! Published in 2019 at "Geochimica et Cosmochimica Acta"
DOI: 10.1016/j.gca.2018.10.017
Abstract: Abstract Chondrules from unequilibrated ordinary and carbonaceous chondrites belong to the oldest and most primitive materials from the early solar system and record chemical and isotopic signatures relating to their formation and evolution. These signatures… read more here.
Keywords: 26mg ages; formation; 26al 26mg; chondrule formation ... See more keywords
Formation of CV chondrules by recycling of amoeboid olivine aggregate-like precursors
Sign Up to like & getrecommendations! Published in 2019 at "Geochimica et Cosmochimica Acta"
DOI: 10.1016/j.gca.2018.12.038
Abstract: We have 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. These chondrules contain smaller inner-chondrule… read more here.
Keywords: olivine; formation chondrules; inner chondrule; chondrules recycling ... See more keywords
Impact splash chondrule formation during planetesimal recycling
Sign Up to like & getrecommendations! Published in 2018 at "Icarus"
DOI: 10.1016/j.icarus.2017.11.004
Abstract: Abstract Chondrules, mm-sized igneous-textured spherules, are the dominant bulk silicate constituent of chondritic meteorites and originate from highly energetic, local processes during the first million years after the birth of the Sun. So far, an… read more here.
Keywords: impact; chondrule formation; chemical isotopic; formation planetesimal ... See more keywords
The initial structure of chondrule dust rims I: Electrically neutral grains
Sign Up to like & getrecommendations! Published in 2019 at "Icarus"
DOI: 10.1016/j.icarus.2018.10.014
Abstract: Abstract In order to characterize the early growth of fine-grained dust rims (FGRs) that commonly surround chondrules in carbonaceous chondrites, we perform numerical simulations of dust accretion onto chondrule surfaces. We employ a Monte Carlo… read more here.
Keywords: structure chondrule; porosity; dust rims; dust ... See more keywords