Results 11 to 20 of about 1,937 (173)
Primary crystallization and partial remelting of chondrules in the protoplanetary disk: Petrographic, mineralogical and chemical constraints recorded in zoned type-I chondrules [PDF]
, 2021 Chondrules from unequilibrated ordinary chondrites are among the oldest Solar system materials and preserve mineralog- ical, chemical and isotopic signatures that link them to their primary formation mechanisms and environments in the early Solar System.
Pape, J. +3 more
core +1 more source
Physical properties and average atomic numbers of chondrules using computed tomography [PDF]
, 2023 Micro-computed tomography is a fast and essentially non-destructive technique for studying 3D properties of solid objects. This study explores the use of a micro-CT technique to determine the physical properties and average atomic numbers of 44 ...
Haberthür, David +9 more
core +1 more source
Cosmic-ray exposure ages of chondrules [PDF]
, 2016 If chondrules were exposed to cosmic rays prior to meteorite compaction, they should retain an excess of cosmogenic noble gases. Beyersdorf-Kuis etal.
Knut Metzler +7 more
core +1 more source
Bubbles to Chondrites-II. Chemical fractionations in chondrites
Progress in Earth and Planetary Science, 2021 We attempt to develop a possible theory of chemical fractionations in chondrites, that is consistent with various features of chondritic components and current observation of protoplanetary disks (PPD).
Akihiko Hashimoto, Yuki Nakano
doaj +1 more source
Geophysical Research Letters, 2023 We employed MC‐ICP‐MS to measure the mass‐dependent Ca isotope compositions of Vesta‐related meteorites. Eucrites and diogenites show distinct Ca isotope compositions, which is caused by crystallization of isotopically heavy orthopyroxene. The Ca isotope
Ke Zhu +5 more
doaj +1 more source
Chondrules in Enstatite Chondrites [PDF]
, 2018 23 pages, 4 figures. Submitted manuscript for a chapter in the book "Chondrules and the protoplanetary disc" (editors : S. Russell, H. C. Connolly Jr, A. N. Krot) to be published by Cambridge University Press in 2018. This version is free to view and download for personal use only.
Jacquet, Emmanuel +2 more
openaire +3 more sources
The Origin of Chondrules: Constraints from Matrix-Chondrule Complementarity
Earth and Planetary Sciences Letters, 2015 One of the major unresolved problems in cosmochemistry is the origin of chondrules, once molten, spherical silicate droplets with diameters of 0.2 to 2 mm. Chondrules are an essential component of primitive meteorites and perhaps of all early solar system materials including the terrestrial planets.
Palme, H, Hezel, D.C, Ebel, D.S.
openaire +2 more sources
Time and duration of chondrule formation: Constraints from 26Al-26Mg ages of individual chondrules [PDF]
, 2019 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.
Bouvier, Anne-Sophie +7 more
core +1 more source
The Planetary Science Journal, 2023 Converging lines of evidence show that protoplanetary disks are complex environments hosting spatial and temporal variability at multiple scales.
Roger R. Fu +5 more
doaj +1 more source
Nature Communications, 2023 Chondrule-like objects and CAIs in the Ryugu samples are early generations of chondrules and possibly oldest solids in the Solar System. They were transported from the inner solar nebula to the formation location of the Ryugu original parent body.
Daisuke Nakashima +32 more
doaj +1 more source