Meteoritic Dust

Meteoritic Dust

 

minute particles that form as a result of the breakup of meteorites upon impact with the earth. This dust was discovered at sites where the Sikhote-Alin meteorite and several other meteorites fell.

References in periodicals archive ?
Whipple suggests that comets have large, solid nuclei consisting of conglomerates of ices--such as water, ammonia, methane, carbon dioxide, and carbon monoxide--mixed with meteoritic dust. According to Whipple's model, as an icy nucleus reaches perihelion (its closest approach to the Sun), solar radiation heats up the body's frozen gases, forming the coma and, in some cases, a long, beautiful tail.
They also collected soil samples contaminated with meteoritic dust. Based on those findings, the initial mass of the interplanetary intruder was estimated to be at least 70 tons.
They come from cosmic dust, meteoritic dust and cometary dust.
In his Fifty Year Canon of Lunar Eclipses: 1986-2035, Fred Espenak speculates that the enlargement might be caused by sunlight passing through a layer of meteoritic dust suspended 120 to 150 kilometers high in the Earth's atmosphere.
"Geochemists have concluded," writes Flerov, "that these rocks contain a considerable amount of meteoritic dust produced as a result of sputtering of a hypothetical cosmic body that had undergone a collision with the earth."
Furthermore, the microphysical module will be extended to include processes such as condensation/evaporation, nucleation but also photo- or gravito-phoresis and the addition of nonvolcanic aerosols (soot, meteoritic dusts).