Results 131 to 140 of about 112,509 (371)
Meteoritics &Planetary Science, EarlyView.Abstract Silica polymorphs in meteorites provide critical constraints on crystallization processes associated with thermal activity in the early solar system. A detailed investigation of silica polymorphs in eucrites (the largest group of achondrites) using cathodoluminescence imaging and laser‐Raman spectroscopy revealed significant variations in the ...
Rei Kanemaru +14 more
wiley +1 more source
Snow metamorphism: a fractal approach
, 2010 Snow is a porous disordered medium consisting of air and three water phases: ice, vapour and liquid. The ice phase consists of an assemblage of grains, ice matrix, initially arranged over a random load bearing skeleton.
A. D. Frolov +7 more
core +1 more source
On some results of the Earth's contraction from cooling; Part II, The condition of the Earth's interior, and the connection of the facts with mountain-making; III, Metamorphism [PDF]
, 1873 J. D. Dana
openalex +1 more source
Investigation and reclassification of four mesosiderites—Implications for their formation
Meteoritics &Planetary Science, EarlyView.Abstract Mesosiderites are rare, differentiated meteorites, so‐called stony‐iron meteorites—they are impact breccias composed of an unusual mix of crustal basalt and pyroxenite, core‐derived metal, but no mantle materials. This odd mixture makes their origin enigmatic and has inspired many different formation theories over the last several decades ...
Gabriel Zachén +4 more
wiley +1 more source
On the variations of the elemental composition of the P3 component in presolar diamonds [PDF]
, 2004 Analysis of noble gas element variations in the P3 component of presolar diamonds indicates that a special mechanism of element fractionation is required to explain the ...
Fisenko, A. V. +4 more
core
Petrography of phosphates in CI and CY carbonaceous chondrites
Meteoritics &Planetary Science, EarlyView.Abstract Phosphate minerals are significant carriers of volatiles (e.g., OH) and halogens in chondritic material; however, their origin in most groups of carbonaceous chondrites remains poorly characterized. We have determined the abundance, morphology, texture, and composition of phosphate grains in aqueously altered CI chondrites and in hydrated and ...
C. S. Harrison +3 more
wiley +1 more source