K-Ar Age of Yamato Meteorite, Yamato-74190-01(L)
P(論文) Preliminary measurements have been carried out on the isotopic compositions and contents of helium, neon and argon in Yamato-74190-01 (L). K-Ar age and exposure ages on the meteorite have been calculated as follows : K-Ar age (∿2.1 b. y.), exposure ages (24 and 22 m. y. in terms of ^3(He) and...
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| Language: | English |
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1978
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| Subjects: | |
| Online Access: | https://nipr.repo.nii.ac.jp/record/891/files/KJ00000011864.pdf https://nipr.repo.nii.ac.jp/records/891 |
| Summary: | P(論文) Preliminary measurements have been carried out on the isotopic compositions and contents of helium, neon and argon in Yamato-74190-01 (L). K-Ar age and exposure ages on the meteorite have been calculated as follows : K-Ar age (∿2.1 b. y.), exposure ages (24 and 22 m. y. in terms of ^3(He) and ^<21>(Ne) contents respectively). From the isotopic correlation diagram for neon and the isotopic ratio, ^<36>(Ar)/^<38>(Ar), it has been suggested that this meteorite contains almost the same quantity of trapped rare gases as cosmogenic ones. departmental bulletin paper |
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