Results 31 to 40 of about 1,765 (166)
The meteorite analogs of (65803) Didymos and implications for its origin
Astronomy & AstrophysicsContext. Identifying meteorite analogs of asteroids is key to understanding their origin and evolution, evaluating planetary defense, and exploring potential space resources.
Zhai Ruoyu +6 more
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The petrography and chemical composition of the Bruderheim meteorite [PDF]
Journal of Geophysical Research, 1961 The Bruderheim meteorite, a hypersthene chondrite, has been examined both petrographically and chemically. The minerals of the meteorite are olivine (Fo_(78)), hypersthene (En_(78)), plagioclase (Ab_(95)), apatite, merrillite, chromite, troilite, and metallic iron-nickel.
Duke, Michael +2 more
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The Cu isotopic composition of iron meteorites [PDF]
Meteoritics & Planetary Science, 2012 Abstract– High‐precision Cu isotopic compositions have been measured for the metal phase of 29 iron meteorites from various groups and for four terrestrial standards. The data are reported as the δ65Cu permil deviation of the 65Cu/63Cu ratio relative to the NIST SRM 976 standard.
Bishop, Matthew Cole +5 more
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STUDY ON THE EXTRATERRESTRIAL MATERIAL AT ANTARCTICA (I)
Antarctic Record, 1968 The study of the extraterrestrial material collected in Antarctica is reported. The extrateirestnal material comprises cosmic dust, tektite, and meteorite.
Makoto SHIMA, Hideo YABUKI
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Communications Earth & EnvironmentQuasicrystals, solids with rotational symmetries forbidden for crystals, are usually synthesized in the laboratory by mixing specific ratios of selected elemental components in the liquid and quenching under strictly controlled protocols.
Giovanna Agrosì +6 more
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Isotopic composition of gadolinium in meteorites.
GEOCHEMICAL JOURNAL, 1979 An alternative explanation is presented for the neutron effects observed by EUGSTER et al. (1970) in Gd extracted from the Norton County achondrite. It is suggested that an ‘early’ irradiation of the solar system material occurred at a temperature much higher than 200°K assumed by the above investigators.
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The Planetary Science JournalIn this study, a comprehensive model of the meteoric organic cycle on Mars for the current geological period is developed, which characterizes the ablation of exogenous organic matter in the upper atmosphere, the accretion of intact carbon at the surface,
Juan Diego Carrillo-Sánchez +3 more
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Forming the Noncarbonaceous Chondrite Parent Bodies in the Presence of the Jupiter Barrier
The Astrophysical JournalMeteorites can be divided into two groups—noncarbonaceous chondrite like (NC) and carbonaceous chondrite like (CC)—with distinct stable-isotope compositions. Parent bodies of NC and CC meteorites have overlapping formation ages. This suggests they formed
John Chambers
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Scientific Drilling, 2011 Between October 2008 and May 2009, the International Continental Scientific Drilling Program (ICDP)co-sponsored a campaign at Lake El´gygytgyn, located in a 3.6-Ma-old meteorite impact crater in northeastern Siberia. Drilling targets included three holes
Georg Schwamborn +13 more
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Micromagnetic and microstructural analyses in chondrules of the Allende meteorite
Revista Mexicana de Ciencias Geológicas, 2018 Results of micromagnetic and microstructural studies of individual chondrules from the Allende carbonaceous meteorite are presented. Allende is a member of the CV3 carbonaceous chondrites, and part of the oxidized meteorites with iron in silicates and ...
Daniel Flores-Gutiérrez +3 more
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