Results 121 to 130 of about 43,521 (279)
Chondrule Destruction via Dust Collisions in Shock Waves
The Astrophysical JournalA leading candidate for the heating source of chondrules and igneous rims is shock waves. This mechanism generates high relative velocities between chondrules and dust particles.
Yuji Matsumoto +2 more
doaj +1 more source
Organic indicators of alteration in the CR chondrites [PDF]
, 2002 A study of the organic components in the CR chondrite macromolecule in order to assess the role of pre-terrestrial alteration on the organic ...
Gilmour, I. +2 more
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Olivine Microstructure Constraints on Ureilite Parent Body Deformation
Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.Abstract Ureilites are ultramafic achondrites for which the parent body is unknown. Monomict ureilites, consisting primarily of olivine and pyroxene, are thought to represent mantle residues, carrying essential information for their parent body deformation history.
Yaozhu Li +4 more
wiley +1 more source
Organic material in meteorites and the link to the origin of life
BIO Web of Conferences, 2014 Life requires specific conditions that have been, so far, only proven to meet on Earth. Though the chemical elements required to form living organism (C, H, N, O, S, etc) are widespread in the universe, the molecules that are crucial for Life, like ...
Remusat L.
doaj +1 more source
Archives of impact: The politics of craters on Earth
Geographical Research, Volume 64, Issue 2, May 2026.This paper examines Earth’s 195 confirmed impact craters as archives, exploring their cataloguing and presentation as heritage sites. It argues Western scientific framings using military language and emphasising catastrophe overlook settler colonialism’s violent histories and marginalise indigenous earth‐sky cosmologies.
Gareth Hoskins
wiley +1 more source
, 2014 The examination of the physical properties of chondrules has generally received less emphasis than other properties of meteorites such as their mineralogy, petrology, and chemical and isotopic compositions.
Biltz, Alison E. +7 more
core +1 more source
Journal of Metamorphic Geology, Volume 44, Issue 4, Page 265-286, May 2026.ABSTRACT The Quetico subprovince of the Superior Province is among the largest metasedimentary belts globally and provides evidence of tectonic processes at play during the final stages of Archean cratonization. Although previous studies have shown that deformation and metamorphism of the 2.7‐Ga turbiditic protolith resulted in regional subvertical ...
Adrian G. Rehm +4 more
wiley +1 more source
Fe-Ni Sulphides within a CM1 clast in Tagish Lake [PDF]
, 2005 The composition, abundance and mineral associations of Fe-Ni sulphides within a CM1 clast in Tagish Lake are described, and compared with Fe-Ni sulphides in the carbonate-rich and carbonate-poor lithology of Tagish Lake, as well as Fe-Ni sulphides from ...
Bullock, E. S. +3 more
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Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.Abstract The absence of sound‐velocity data spanning the entire lower mantle pressures for (Fe, Al)‐bearing bridgmanite impedes direct comparisons with seismic wave observations, leaving the chemistry of the lower mantle unresolved. The present ultra‐high pressure sound‐velocity measurements of in situ synthesized (Fe, Al)‐bearing bridgmanite up to 130
P. Saha, M. Murakami, N. Miyajima
wiley +1 more source
Isheyevo Meteorite: Genetic link between CH and CB chondrites? [PDF]
, 2006 Based on the mineralogy, petrography, bulk chemical, oxygen, and nintrogen isotopic compositions and 40Ar-39Ar age, Isheyevo is genetically related to CH and CB carbonaceous chondrites and provides a link between these group of pristine ...
Brandstätter, F. +7 more
core