@article{oai:nipr.repo.nii.ac.jp:00004459,
 author = {Beukens,R.P. and Rucklidge,J.C. and Miura,Yasunori},
 journal = {Proceedings of the NIPR Symposium on Antarctic Meteorites},
 month = {Mar},
 note = {P(論文), Carbon was extracted from 1g samples of ten Antarctic chondrites, using stepwise heating. The evolved CO_2 was collected at 1000℃, melt and remelt. The ^<14>C concentrations were measured at the Isotrace AMS facility and were compared with the zero-age ^<14>C concentration of the Bruderheim (L6) chondrite. The Allan Hills meteorite ALH-77231 (L6) yielded a terrestrial age, not corrected for in situ production, of 30ka. The uncorrected terrestrial ages of the 9 Yamato meteorites Y-74014 (H6), Y-74097 (Dio), Y-74191 (L3), Y-75271 (L5), Y-790448 (LL3), Y-791500 (H3), Y-791630 (L4), Y-791717 (C3) and Y-74647 (H5) showed a wide range from 500a to 30ka.},
 pages = {224--230},
 title = {14C ages of 10 Yamato and Allan Hills meteorites},
 volume = {1},
 year = {1988}
}