Results 81 to 90 of about 5,656 (205)

Classification of stony meteorites and chondrules – the case of meteorite Jesenice

Geologija, 2012
In the first part of the paper there is a description about genesis of meteorites, in particularly about stony meteorites– chondrites, since meteorite Jesenice is an ordinary L chondrite. Chondrules represent main part of the mass ofchondritic meteorites.
Bojan Ambrožič, Sašo Šturm, Miha Jeršek, Breda Mirtič   +3 more
doaj  

New carbonaceous chondrite Northwest Africa 11781 (CM2)

Литосфера, 2019
Research subject. The article presents the results of a study of a new meteorite Northwest Africa 11781.Material and methods. The material for the study was a fragment of a meteorite weighing 15.56 g, from which 4 transparent polished sections with a ...
K. A. Dugushkina, S. V. Berzin
doaj   +1 more source

Estimating the Net Magnetic Moment of Geological Samples From Planar Field Maps Using Multipoles

Geochemistry, Geophysics, Geosystems, 2023
Recent advances in magnetic microscopy have enabled studies of geological samples whose weak and spatially nonuniform magnetizations were previously inaccessible to standard magnetometry techniques.
Eduardo A. Lima, Benjamin P. Weiss, Caue S. Borlina, Laurent Baratchart, Douglas P. Hardin   +4 more
doaj   +1 more source

Modeling enstatite chondrites: Reduced rocks with a pinch of oxidized material (affected by varying H2O(g)) derived from planetesimals shocked during the epoch of giant–planet migration

Meteoritics &Planetary Science, Volume 61, Issue 1, Page 122-139, January 2026.
Abstract The O‐, N‐, Mo‐, Ru‐, Os‐, Cr‐, Ti‐, Ni‐, Fe‐, Nd‐, Ca‐, Zn‐, Sr‐, and Mg‐isotopic compositions of enstatite chondrites are essentially identical to those of the Earth and Moon. These correspondences suggest enstatite chondrites formed at ≈1 AU as the only known chondrite groups that accreted in the vicinity of a major planet. Bulk Earth has a
Alan E. Rubin
wiley   +1 more source

Various Size-sorting Processes for Millimeter-sized Particles in the Sun’s Protoplanetary Disk? Evidence from Chondrules in Ordinary Chondrites

Astrophysical Journal, 2019
Chondrules are approximately millimeter-sized beads of crystallized silicate melt. They formed mainly in the first ∼3 Ma of the Sun’s protoplanetary disk and are the main constituents of chondritic asteroids.
K. Metzler, D. Hezel, J. Nellesen
semanticscholar   +1 more source

Occurrence and characterization of nanosulfide‐rich regions on asteroid Ryugu: Insights from mackinawite and pyrrhotite

Meteoritics &Planetary Science, Volume 61, Issue 1, Page 168-181, January 2026.
Abstract Samples returned from asteroid Ryugu by the Hayabusa2 mission are dominated by fine‐grained matrix material made of phyllosilicates and nanosulfides. Here, we report the mineralogical, textural, and chemical characteristics of nanosulfide‐rich regions identified in Ryugu particles.
Roberto Conconi, Hugues Leroux, Maya Marinova, Sylvain Laforet, Damien Jacob, Léna Jossé, Alice Aléon‐Toppani, Zélia Dionnet, Rosario Brunetto, Corentin Le Guillou   +9 more
wiley   +1 more source

The Short Circuit Instability in Protoplanetary Disks: Processing high temperature minerals

EPJ Web of Conferences, 2013
We introduce a magneto-hydrodynamic instability which occurs, among other locations, in the inner, hot regions of protoplanetary disks, and which alters the way in which resistive dissipation of magnetic energy into heat proceeds.
D’Alessio P., Ebel D. S., Hubbard A., McNally C. P., Mac Low M. M.   +4 more
doaj   +1 more source

Did a Complex Carbon Cycle Operate in the Inner Solar System?

Life, 2020
Solids in the interstellar medium consist of an intimate mixture of silicate and carbonaceous grains. Because 99% of silicates in meteorites were reprocessed at high temperatures in the inner regions of the Solar Nebula, we propose that similar levels of
Joseph A. Nuth, Frank T. Ferguson, Hugh G. M. Hill, Natasha M. Johnson   +3 more
doaj   +1 more source

Phyllosilicate Infrared Spectral Features as Tracers of Aqueous Alteration in CM Chondrites and Implications for Remote Sensing of Hydrated Asteroids

Journal of Geophysical Research: Planets, Volume 130, Issue 12, December 2025.
Abstract CM (Mighei‐type) carbonaceous chondrites host abundant OH/H2O‐bearing phyllosilicates formed from water‐rock reactions in primitive planetesimals. Their infrared (IR) spectral features resemble those of C‐type asteroids, making laboratory analyses of CMs essential for interpreting asteroid observations.
W. M. Lawrence, B. L. Ehlmann
wiley   +1 more source

Planetesimal Impact Vapor Plumes and Nebular Shocks Form Chondritic Mixtures

The Planetary Science Journal
The origin of chondrules and the chondritic sedimentary rocks that dominate the meteoritic record is a long-standing problem in planetary science. Here, we develop a physical model for the formation of chondritic mixtures as an outcome of vaporizing ...
Sarah T. Stewart, Simon J. Lock, Philip J. Carter, Erik J. Davies, Michail I. Petaev, Stein B. Jacobsen   +5 more
doaj   +1 more source