| Reference Type | Journal (article/letter/editorial) |
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| Title | K-Ar age of the East Peripheral kimberlite at De Beers Mine, Kimberley, R.S.A. |
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| Journal | Geological Magazine |
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| Authors | Fitch, F. J. | Author |
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| Miller, J. A. | Author |
| Year | 1983 (September) | Volume | 120 |
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| Issue | 5 |
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| Publisher | Cambridge University Press (CUP) |
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| DOI | doi:10.1017/s0016756800027497Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 252259 | Long-form Identifier | mindat:1:5:252259:7 |
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| GUID | 0 |
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| Full Reference | Fitch, F. J., Miller, J. A. (1983) K-Ar age of the East Peripheral kimberlite at De Beers Mine, Kimberley, R.S.A. Geological Magazine, 120 (5) 505-512 doi:10.1017/s0016756800027497 |
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| Plain Text | Fitch, F. J., Miller, J. A. (1983) K-Ar age of the East Peripheral kimberlite at De Beers Mine, Kimberley, R.S.A. Geological Magazine, 120 (5) 505-512 doi:10.1017/s0016756800027497 |
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| In | (1983, September) Geological Magazine Vol. 120 (5) Cambridge University Press (CUP) |
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| Abstract/Notes | Summary. The kimberlite pipe at De Beers Mine, Kimberley is a complex, multiple structure. Three concordant argon-40/argon-39 age spectra have been obtained from samples from the 720 m level in the East Peripheral kimberlite. Each spectrum is dominated by a major plateau-feature between 84 and 89 Ma and none shows significant evidence of either excess argon or argon loss discrepancy. The available evidence suggests that the K-Ar age of normal magmatic emplacement-cooling of the East Peripheral kimberlite at De Beers Mine was close to 86 ± 2 Ma. |
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