Mathematics – Probability
Scientific paper
Jan 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996eiaf.conf...39w&link_type=abstract
Workshop on Evolution of Igneous Asteroids: Focus on Vesta and the HED Meterorites, p. 39
Mathematics
Probability
Chondrites, Exposure, Meteoritic Composition, Vesta Asteroid, Achondrites, Cosmic Rays, Cosmochemistry, Helium Isotopes, Neon Isotopes, Argon Isotopes, Isotope Ratios
Scientific paper
Cosmic-ray-exposure ages of meteorites provide information on the collisional history of their parent bodies and the delivery mechanism of meteorites to Earth. The exposure-age distributions of ordinary chondrites show distinct patterns for H, L, and LL types, consistent with their origin on different parent bodies. The exposure-age distributions of howardites, eucrites. and diogenites (HEDS) show a common pattern with major peaks at 22 Ma and 38 Ma This provides additional evidence for a common origin of the HED meteorites, possibly 4 Vesta, although orbital dynamics calculations showed that the delivery of meteorites from Vesta to Earth is difficult. However, the discovery of several kilometer-sized Vesta-like asteroids in the region between Vesta and the 3:1 resonance suggested that these seem more likely parent bodies of the HEDs than Vesta itself. This implies that the exposure-age clusters may represent samples of several parent bodies. Therefore, the near-absence of diogenites with ages <20 Ma might be of interest for the composition of these kilometer-sized fragments of Vesta. Here we present cosmic-ray-exposure ages of 20 diogenites, including 9 new meteorites. In addition, we calculate the probability for each peak to occur by chance, assuming a constant production rate of HED fragments.
Lindner Louis
Loeken Th.
Scherer Peter
Schultz Ludolf
vanderBorg K.
No associations
LandOfFree
Cosmic-Ray-Exposure Ages of Diogenites and the Collisional History of the HED Parent Body or Bodies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Cosmic-Ray-Exposure Ages of Diogenites and the Collisional History of the HED Parent Body or Bodies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cosmic-Ray-Exposure Ages of Diogenites and the Collisional History of the HED Parent Body or Bodies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-970383