Results 91 to 100 of about 5,656 (205)

The origin of volatile element depletion in early solar system material: Clues from Zn isotopes in chondrules

open access: yes, 2017
Volatile lithophile elements are depleted in the different planetary materials to various degrees, but the origin of these depletions is still debated.
E. Pringle   +4 more
semanticscholar   +1 more source

Parent body thermal metamorphism of enstatite chondrites: Disentangling the effects of shock melting

open access: yesMeteoritics &Planetary Science, Volume 60, Issue 12, Page 2828-2863, December 2025.
Abstract Enstatite chondrites (ECs) formed on at least two parent bodies, EH and EL. After the accretion of the EC parent bodies, EC material was subjected to varying degrees of parent body thermal metamorphism (measured by petrologic types 3–6), due to heat released by radioactive isotope decay.
Peter Mc Ardle   +9 more
wiley   +1 more source

Single chondrule K-Ar and Pb-Pb ages of Mexican ordinary chondrites as tracers of extended impact events

open access: yesRevista Mexicana de Ciencias Geológicas, 2018
There is a good consensus about the age of the most primitive materials in the Solar System represented by carbonaceous chondrites. From these, a canonical age of the Solar System of 4567 Ma has been defined.
María del Sol Hernández-Bernal   +1 more
doaj  

Sulfur‐bearing serpentine in carbonaceous chondrites

open access: yesMeteoritics &Planetary Science, Volume 60, Issue 12, Page 2864-2890, December 2025.
Abstract A correlative multi‐technique approach, including electron microscopy and X‐ray synchrotron work, has been used to obtain both structural and compositional information of a sulfur‐bearing serpentine identified in several carbonaceous chondrites (Winchcombe CM2, Aguas Zarcas CM2, Ivuna CI, and Orgueil CI), and in Ryugu samples returned by the ...
N. Topping   +14 more
wiley   +1 more source

Petrologic and Minerochemical Trends of Acapulcoites, Winonaites and Lodranites: New Evidence from Image Analysis and EMPA Investigations

open access: yesGeosciences, 2015
A comprehensive classification of primitive achondrites is difficult due to the high compositional and textural variability and the low number of samples available.
Vanni Moggi Cecchi, Stefano Caporali
doaj   +1 more source

The use of SEM/EDS method in mineralogical analysis of ordinary chondritic meteorite

open access: yesGeologija, 2009
The aim of this study was to evaluate the potential of scanning electron microscopy coupled with energy dispersiveX-ray spectroscopy (SEM/EDS) for determination of mineral phases according to their stoichiometry and assessment of mineral composition of ...
Breda Mirtič, Urša Curk, Miloš Miler
doaj  

Volatile element evolution of chondrules through time

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2018
Significance We present time-anchored elemental abundance data for some of the Solar System’s first solids by tracking Pb−Pb dated chondrule compositions.
B. Mahan   +8 more
semanticscholar   +1 more source

Issue Information

open access: yes
Meteoritics &Planetary Science, Volume 61, Issue 2, Page 209-210, February 2026.
wiley   +2 more sources

Magnesium and 54Cr isotope compositions of carbonaceous chondrite chondrules – Insights into early disk processes

open access: yesGeochimica et Cosmochimica Acta, 2016
We report on the petrology, magnesium isotopes and mass-independent 54Cr/52Cr compositions (μ54Cr) of 42 chondrules from CV (Vigarano and NWA 3118) and CR (NWA 6043, NWA 801 and LAP 02342) chondrites.
M. Olsen   +4 more
semanticscholar   +1 more source

Trace elements in the silicate minerals of the Borodino Meteorite (Н5)

open access: yesЗаписки Горного института
Major (EPMA) and trace (SIMS) element geochemistry in olivine, low-Са pyroxene and mesostasis from porphyritic and barred chondrules, as well as the pyroxene-olivine aggregate and matrix of equilibrated ordinary Borodino chondrite (Н5) is discussed. No
Kristina G. Sukhanova
doaj  

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