Pore size distribution in an uncompacted equilibrated ordinary chondrite
- Univ of Central FL
The extraordinarily uncompacted nature of the ordinary L chondrite fall Baszkowka gives a unique opportunity to investigate the potentially pre-compaction pore size distribution in an equilibrated ordinary chondrite. Using X-ray microtomography and helium pycnometry on two samples of Baszkowka, we have found that on average, two-thirds of the 19.0% porosity resides in inter- and intra-granular voids with volumes between {approx}3 x10{sup 05} and 3 mm{sup 3}. We show the cumulative number density of pore volumes observable by X-ray microtomography obeys a power law distribution function in this equilibrated ordinary chondrite. We foresee these data adding to our understanding of the impact processing of chondrites and their parent asteroids, where porosity and pore size play significant roles in the parameterization of impact events.
- Research Organization:
- Advanced Photon Source (APS), Argonne National Laboratory (ANL), Argonne, IL (US)
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 1006610
- Journal Information:
- Planet Space Sci., Journal Name: Planet Space Sci. Journal Issue: 2008 Vol. 56; ISSN 0032-0633; ISSN PLSSAE
- Country of Publication:
- United States
- Language:
- ENGLISH
Similar Records
Physical propoerties of incompletely compacted equilibrated ordinary chondrites: Implications for asteroidal structure and impact processing
Physical properties, internal structure, and the three‐dimensional petrography of CI chondrites