Spectral alteration effects in chondritic gas-rich breccias: implications for S-class and Q-class asteroids.
The authors have obtained reflection spectra of gas-rich matrix regions in OC regolith breccias, which are believed to represent lithified portions of asteroid regoliths that were once directly exposed to space. Spectral effects attributable to shock and impact melting were identified; in some portions of particular meteorites they are very strong and would be easily detectable in current asteroid data sets. However, in no case was the curved red continuum observed in class S asteroid spectra found. The newly discovered class Q asteroids provide a viable alternative source for ordinary chondrites, but the presence of these objects only on Earth-approaching orbits poses some new problems.
Lunar and Planetary Science Conference Proceedings
- Pub Date:
- Meteoritic Composition;
- Iron Meteorites;
- Spectrum Analysis;
- Lunar and Planetary Exploration; Asteroids;
- Chondrites:Minor Planets;
- Chondrites:Parent Bodies;
- Minor Planets:Chondrites