Results 101 to 110 of about 104,611 (276)

Hydrogen isotopic composition of the Tagish Lake meteorite: comparison with other carbonaceous chondrites [PDF]

open access: yes, 2001
A study into the hydrogen isotopic characteristics of whole rock samples of carbonaceous chondrites and their comparison with a whole rock sample of the Tagish Lake ...
Franchi, I. A.   +3 more
core  

Chromite in main group pallasite meteorites: Accessory mineral tracing planetesimal differentiation

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract Main group pallasite meteorites (PMG) are samples of an early, highly differentiated magmatic planetesimal dominated by olivine and metal‐sulfide‐phosphide assemblages with accessory chromite among other phases. This mineralogy reflects mantle‐ and core‐related reservoirs, but the relative contributions of each and the overall petrogenesis are
Seann J. McKibbin   +6 more
wiley   +1 more source

From Meteorite to Meteor-Wrong: Investigating a controversial specimen from Cuba

open access: yesRevista Mexicana de Ciencias Geológicas
The meteorite “Cuba”, whose type of mass is catalogued as MNCN No. 17294 (Museum of Natural Sciences, Madrid, Spain), has long been considered an official meteorite, included in the Meteoritical Society’s online database.
Yasmani Ceballos-Izquierdo   +2 more
doaj   +1 more source

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

open access: yesMeteoritics &Planetary Science, EarlyView.
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

Phaetoni langemine: kreeka-rooma geomüüt meteoriidi mõju mälestuse säilitajana Baieris (Kagu-Saksamaa) [PDF]

open access: yesMäetagused, 2011
Arguing from a critical reading of the text, and scientific evidence on the ground, the authors show that the myth of Phaethon – the delinquent celestial charioteer – remembers the impact of a massive meteorite that hit the Chiemgau region in Bavaria ...
Barbara Rappenglück   +6 more
doaj  

The variations of chemical composition and features of the distribution of rare elements in chondrites of fragments of the Chelyabinsk meteorite

open access: yesЛитосфера, 2019
Research subject. This paper reports the results of a series of experiments carried out to study the mineral and geoche mical features of 10 Chelyabinsk meteorite fragments.
V. S. Antipin   +3 more
doaj   +1 more source

Macromolecular organic acids in the Murchison meteorite [PDF]

open access: yes, 2005
This study has detected bound organic acids within the Murchison meteorite organic macromolecule. Benzoic acid was the most abundant compound; other abundant compounds include C1 and C2 benzoic acids.
Gilmour, I.   +2 more
core  

Multiple carriers of Q noble gases in primitive meteorites

open access: yes, 2015
The main carrier of primordial heavy noble gases in chondrites is thought to be an organic phase, known as phase Q, whose precise characterization has resisted decades of investigation.
Amari   +40 more
core   +2 more sources

The effect of pressure on dihedral angle between liquid Fe‐S and orthopyroxene: Implication for percolative core formation in planetesimals and planetary embryos

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract During precursor stages of planet formation, many planetesimals and planetary embryos are considered to have differentiated, forming an iron‐alloy core and silicate mantle. Percolation of liquid iron‐alloy in solid silicates is one of the major possible differentiation processes in these small bodies.
Takumi Miura   +5 more
wiley   +1 more source

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