scholarly journals Collection and Microanalysis of Antarctic Micrometeorites

1996 ◽  
Vol 150 ◽  
pp. 265-273 ◽  
Author(s):  
M. Maurette ◽  
C. Engrand ◽  
G. Kurat
Keyword(s):  
Interplanetary Dust ◽  
Dust Particles ◽  
Carbonaceous Chondrites ◽  
Interplanetary Dust Particles

AbstractMicrometeorites (MMs) represent the most common interplanetary dust particles (50-500 μm). They are similar to carbonaceous chondrites (CCs) but do not match, mineralogically and chemically, known CC types.

scholarly journals Carbonaceous Material in Extra-terrestrial Matter

2015 ◽  
Vol 11 (A29A) ◽  
pp. 257-260
Author(s):  
Zita Martins
Keyword(s):  
Amino Acids ◽  
Carbonaceous Material ◽  
Interplanetary Dust ◽  
Hypervelocity Impact ◽  
Dust Particles ◽  
Early Earth ◽  
Carbonaceous Chondrites ◽  
Interplanetary Dust Particles ◽  
Living Organisms ◽  
Impact Shock

AbstractComets, asteroids, meteorites, micrometeorites, interplanetary dust particles (IDPs), and ultra-carbonaceous Antarctic micrometeorites (UCAMMs) may contain carbonaceous material, which was exogenously delivered to the early Earth. Carbonaceous chondrites have an enormous variety of extra-terrestrial compounds, including all the key compounds important in terrestrial biochemistry. Comets contain several carbon-rich species and, in addition, the hypervelocity impact-shock of a comet can produce several α-amino acids. The analysis of the carbonaceous content of extra-terrestrial matter provides a window into the resources delivered to the early Earth, which may have been used by the first living organisms.

scholarly journals Aqueous Alteration in Hydrated Interplanetary Dust Particles

1991 ◽  
Vol 126 ◽  
pp. 71-78
Author(s):  
Kazushige Tomeoka
Keyword(s):  
Significant Proportion ◽  
Interplanetary Dust ◽  
Chemical Data ◽  
Dust Particles ◽  
Carbonaceous Chondrites ◽  
Interplanetary Dust Particles ◽  
Aqueous Alteration ◽  
Mineralogical Characteristics ◽  
Type Studies ◽  
Considerable Detail

AbstractInterplanetary dust particles (IDPs) characterized by chondritic composition can be divided into two principal groups, anhydrous and hydrated. This paper summarizes recent results of mineralogical and petrological studies dealing with the IDPs of hydrated type. Studies on mineralogical characteristics, infrared absorption spectra, and isotopic properties of the hydrated particles have suggested that they are primitive and may contain surviving interstellar material. The hydrated IDPs consist in major part of layer silicates and resemble CI and CM carbonaceous chondrites. Mineralogical and chemical data of both IDPs and carbonaceous chondrites have accumulated, and it is now possible to compare the mineralogies of the IDPs and the meteorites in considerable detail. Evidence was found that a significant proportion of the hydrated IDPs have been processed by aqueous alteration, and the nature of the alteration resembles that of similarly affected meteorites. The mineralogical and chemical data provide important clues to the possible origins of IDPs.

IDENTIFICATION AND ANALYSIS OF INTERPLANETARY DUST PARTICLES FILTERED FROM ANTARCTIC AIR

2018 ◽  
Author(s):  
Katherine Burgess ◽  
◽  
David Bour ◽  
Rhonda M. Stroud ◽  
Anais Bardyn ◽  
...  
Keyword(s):  
Interplanetary Dust ◽  
Dust Particles ◽  
Interplanetary Dust Particles

scholarly journals On Two Mechanisms of X-Ray Generation in Comets

1985 ◽  
Vol 85 ◽  
pp. 365-368
Author(s):  
S. Ibadov
Keyword(s):  
High Temperature ◽  
Interplanetary Dust ◽  
Dust Particles ◽  
Interplanetary Dust Particles ◽  
Temperature Plasma ◽  
X Ray ◽  
Plasma Generation ◽  
High Temperature Plasma

AbstractThe intensity of solar X-radiation scattered by a comet is calculated and compared to the proper X-radiation of the comet due to impacts of cometary and interplanetary dust particles. Detection of X-radiation of dusty comets at small heliocentric distances (R ≤ 1 a.u.) is found to be an indicator of high-temperature plasma generation as result of grain collisions.

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