Abstract
The analytical results of noble gase in recently fallen Juancheng chondrite indicate that cosmic-ray ages of cosmogenic nuclei of3He,21Ne and38Ar are 5.1, 5.0 and 5.8 Ma, respectively, averaging 5.3 Ma. The gas retention ages radiogenic nuclei of4He and40Ar are 3 200 and 4 200 Ma, respectively. The average cosmic-ray age shows that it has occurred at breakup of the meteoroid from its parent body by impact before 5.3 Ma.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Chen Yongheng, Wang Daode, Wang Ruitian, Juancheng chondrite, a new meteorite fallen recently in China,Chcnese Science Bulletin, 1998, 43(21): 1834.
Wang Daode, Alan, E. R., Petrology of nine ordinary chondrites falls from China,Meteoritics, 1987, 22: 97.
Wang Daode, Chen Yongheng, Petrology and chemistry of ordinary chondrites from China and their classification.Geohimica (in Chinese), 1991(1): 13.
Wang Daode, Chen Yongheng, Li Zhaohuiet al., Introduction to Chinese Meteorites (in Chinese), Beijing, Science Press, 1993. 505.
Wang Daode, Yi Weixi, Otto Eugster, A study on noble gases in the chondrites from China,Geohimica (in Chinese). 1992(4) : 313.
Author information
Authors and Affiliations
About this article
Cite this article
Wang, D., Wang, R. Noble gas and cosmic-ray exposure age of Juancheng chondrite. Chin.Sci.Bull. 44, 1142–1143 (1999). https://doi.org/10.1007/BF02886145
Issue Date:
DOI: https://doi.org/10.1007/BF02886145