Results 81 to 90 of about 5,269 (213)
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 +3 more
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 +4 more
doaj +1 more source
, 2008 We consider gas at densities appropriate to protoplanetary disks and calculate its ability to cool due to line radiation emitted by H2O molecules within the gas. Our work follows that of Neufeld & Kaufman (1993; ApJ, 418, 263), expanding on their work in
Avrett +32 more
core +1 more source
Meteoritics &Planetary Science, Volume 61, Issue 2, Page 300-316, February 2026.Abstract The Campo del Cielo iron meteorite (IAB‐MG) provides a unique window into early solar system processes, particularly the formation and evolution of carbon phases in non‐magmatic iron meteorites. In this study, we conducted a systematic nanostructural investigation of three distinct graphite occurrences—cliftonite (type I), interstitial ...
Xiao Tian Deng +8 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. +4 more
doaj +1 more source
Textural and minerochemical features of NWA 1807 and 2180, two new CV3 chondrites from northwest Africa [PDF]
, 2007 A textural and minerochemical study has been performed on NWA 1807 and 2180 chondrites in order to determine sizes and typologies of chondrules, relative abundances of mineral phases, compositions of main phases and bulk oxygen isotope ...
Franchi, I. A. +4 more
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Abundance, distribution, and origin of 60Fe in the solar protoplanetary disk
, 2012 Meteorites contain relict decay products of short-lived radionuclides that were present in the protoplanetary disk when asteroids and planets formed. Several studies reported a high abundance of 60Fe (t1/2=2.62+/-0.04 Myr) in chondrites (60Fe/56Fe~6*10-7)
Dauphas, Nicolas, Tang, Haolan
core +1 more source
Planetesimal Impact Vapor Plumes and Nebular Shocks Form Chondritic Mixtures
The Planetary Science JournalThe 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 +5 more
doaj +1 more source
Meteoritics &Planetary Science, Volume 61, Issue 1, Page 17-38, January 2026.Abstract A bright fireball was seen at 4:46 a.m. CET on November 19, 2020, over Austria, and also eye witnessed in Italy and Germany. The resulting Kindberg meteorite was the fifth well‐approved meteorite fall in Austria, and all rocks represent ordinary chondrites.
Addi Bischoff +8 more
wiley +1 more source
The distribution of asteroids: evidence from Antarctic micrometeorites [PDF]
, 2002 The relative abundances of types amongst 550 AMMs are reported. These suggest that C-type asteroids vary from petrologic type 1 to 3.2 and that the majority of S-type asteroids are chondrule ...
Genge, M. J., Grady, Monica
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