Abstract
A Monte-Carlo technique has been used to investigate the orbital evolution of asteroidal collision debris produced interior to 2.6 AU. It is found that there are two regions primarily responsible for production of Earth-crossing meteoritic material and Apollo objects. The region adjacent to the 3:1 jovian commensurability resonance (2.5 AU) is unique in providing material in the required quantity and orbital distribution of the ordinary chondrites. This region should also supply a comparable preatmospheric flux of carbonaceous meteorites. The innermost asteroid belt (2.17-2.25 AU), via the v
6
secular resonance, provides a flux
ca.
9% that of the ordinary chondrites, and appears to be the strongest candidate for the basaltic achondrite source region. It is unlikely that a significant number of meteorites originate beyond 2.6 AU. It is speculated that enstatite achondrites are derived from the Hungaria region, interior to the main belt, and that iron and stony-iron meteorites originate from many main-belt sources interior to 2.6 AU.
Reference30 articles.
1. Bogard D. D. 1979 Chronology of asteroid collisions as recorded in meteorites. In Asteroids (ed. T. Gehrels) (558-578 pages). Tucson: University of Arizona Press.
2. Qualitative Aspects of Asteroid Statistics
3. Cosmic ray exposure ages of the ordinary chondrites and their significance for parent body stratigraphy. Geochim. cosmochim;Crab J.;Acta,1981
4. Variation of the UBV colors of S-class asteroids with semimajor axis and diameter
5. Drake M. J. 1979 Geochemical evolution of the eucrite parent body: possible nature and evolution of asteroid 4 Vesta? In Asteroids (ed. T. Gehrels) (765-782 pages). Tucson: University of Arizona Press.
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