Thermal and chemical evolution in the early solar system as recorded by FUN CAIs: Part I – Petrology, mineral chemistry, and isotopic composition of Allende FUN CAI CMS-1

2017 ◽  
Vol 201 ◽  
pp. 25-48 ◽  
Author(s):  
C.D. Williams ◽  
T. Ushikubo ◽  
E.S. Bullock ◽  
P.E. Janney ◽  
R.R. Hines ◽  
...  
Keyword(s):  
Solar System ◽  
Isotopic Composition ◽  
Chemical Evolution ◽  
Mineral Chemistry ◽  
Early Solar System

Organic matter in carbonaceous meteorites: past, present and future research

2005 ◽  
Vol 363 (1837) ◽  
pp. 2729-2742 ◽  
Author(s):  
Mark A Sephton
Keyword(s):  
Organic Matter ◽  
Solar System ◽  
Chemical Evolution ◽  
Chemical Environment ◽  
Future Research ◽  
Organic Chemical ◽  
Early Solar System ◽  
Organic Mixtures ◽  
Prebiotic Chemical ◽  
Life On Earth

Carbonaceous meteorites are fragments of ancient asteroids that have remained relatively unprocessed since the formation of the Solar System. These carbon-rich objects provide a record of prebiotic chemical evolution and a window on the early Solar System. Many compound classes are present reflecting a rich organic chemical environment during the formation of the planets. Recent theories suggest that similar extraterrestrial organic mixtures may have acted as the starting materials for life on Earth.

scholarly journals Thermal and chemical evolution in the early Solar System as recorded by FUN CAIs: Part II – Laboratory evaporation of potential CMS-1 precursor material

2017 ◽  
Vol 201 ◽  
pp. 49-64 ◽  
Author(s):  
Ruslan A. Mendybaev ◽  
Curtis D. Williams ◽  
Michael J. Spicuzza ◽  
Frank M. Richter ◽  
John W. Valley ◽  
...  
Keyword(s):  
Solar System ◽  
Chemical Evolution ◽  
Early Solar System ◽  
Precursor Material

129I/127I: a Puzzling Early Solar System Chronometer

1980 ◽  
Vol 35 (2) ◽  
pp. 145-170 ◽  
Author(s):  
J. Jordan ◽  
T. Kirsten ◽  
H. Richter
Keyword(s):  
Solar System ◽  
Isotopic Composition ◽  
Solar Nebula ◽  
Spatiotemporal Variations ◽  
Ordinary Chondrites ◽  
Early Solar System ◽  
Chronological Order ◽  
Metamorphic History ◽  
Accretion Process

AbstractWe report I-Xe ages and other relevant xenon data for seven ordinary chondrites from H and L-groups of petrologic types 4-6, which were selected on the basis of minimum weathering and shock effects. Nevertheless, no chronological order with respect to the I-Xe ages exists among the different petrologic types. We demonstrate, however, that the degree to which the 1-Xe record is preserved in these chondrites, but not necessarily the age, is dependent on the thermal metamorphic history. In order to explain the lack of chronological order among the chondrites, spatiotemporal variations in the condensation-accretion process or inhomogeneities in the isotopic composition of iodine in the solar nebula is required.

Laboratory and in-situ analysis of comet dust

1988 ◽  
Vol 46 ◽  
pp. 8-9
Author(s):  
D.E. Brownlee ◽  
A.L. Albee
Keyword(s):  
Electron Microscopy ◽  
Solar System ◽  
Laboratory Study ◽  
Isotopic Analysis ◽  
Building Blocks ◽  
Sem Analysis ◽  
Early Solar System ◽  
Cometary Material ◽  
Comet Dust

Comets are primitive, kilometer-sized bodies that formed in the outer regions of the solar system. Composed of ice and dust, comets are generally believed to be relic building blocks of the outer solar system that have been preserved at cryogenic temperatures since the formation of the Sun and planets. The analysis of cometary material is particularly important because the properties of cometary material provide direct information on the processes and environments that formed and influenced solid matter both in the early solar system and in the interstellar environments that preceded it.The first direct analyses of proven comet dust were made during the Soviet and European spacecraft encounters with Comet Halley in 1986. These missions carried time-of-flight mass spectrometers that measured mass spectra of individual micron and smaller particles. The Halley measurements were semi-quantitative but they showed that comet dust is a complex fine-grained mixture of silicates and organic material. A full understanding of comet dust will require detailed morphological, mineralogical, elemental and isotopic analysis at the finest possible scale. Electron microscopy and related microbeam techniques will play key roles in the analysis. The present and future of electron microscopy of comet samples involves laboratory study of micrometeorites collected in the stratosphere, in-situ SEM analysis of particles collected at a comet and laboratory study of samples collected from a comet and returned to the Earth for detailed study.

Preface: Evolution of the early solar system: Presolar cosmochemical fingerprints and the formation of watery rocky planets

2016 ◽  
Vol 50 (1) ◽  
pp. 1-2 ◽  
Author(s):  
Tomohiro Usui ◽  
Audrey Bouvier ◽  
Justin I. Simon ◽  
Noriko Kita
Keyword(s):  
Solar System ◽  
Early Solar System ◽  
Rocky Planets
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