| Reference Type | Journal (article/letter/editorial) |
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| Title | First report of Pan-African Sm—Nd and Rb—Sr mineral isochron ages from regional charnockites of southern India |
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| Journal | Geological Magazine |
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| Authors | Unnikrishnan-Warrier, C. | Author |
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| Santosh, M. | Author |
| Yoshida, M. | Author |
| Year | 1995 (May) | Volume | 132 |
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| Issue | 3 |
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| Publisher | Cambridge University Press (CUP) |
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| DOI | doi:10.1017/s0016756800013583Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 256585 | Long-form Identifier | mindat:1:5:256585:3 |
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| GUID | 0 |
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| Full Reference | Unnikrishnan-Warrier, C., Santosh, M., Yoshida, M. (1995) First report of Pan-African Sm—Nd and Rb—Sr mineral isochron ages from regional charnockites of southern India. Geological Magazine, 132 (3) 253-260 doi:10.1017/s0016756800013583 |
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| Plain Text | Unnikrishnan-Warrier, C., Santosh, M., Yoshida, M. (1995) First report of Pan-African Sm—Nd and Rb—Sr mineral isochron ages from regional charnockites of southern India. Geological Magazine, 132 (3) 253-260 doi:10.1017/s0016756800013583 |
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| In | (1995, May) Geological Magazine Vol. 132 (3) Cambridge University Press (CUP) |
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| Abstract/Notes | AbstractMineral and whole-rock isotope data for a massive charnockite from Kottaram in the Nagercoil Block at the southern tip of Peninsular India yield Sm—Nd and Rb—Sr ages of 517 ± 26 Ma and 484 ± 15 Ma respectively. The Nd model age calculated for the charnockite is c. 2100 Ma. Our study reports the first Pan-African mineral isochron ages from regional charnockites of Peninsular India, which are in good agreement with the recently obtained ages of incipient charnockites in the adjacent blocks, as well as alkaline plutons within the same block. Our results indicate that the Pan-African tectonothermal event in the granulite blocks south of the Palghat—Cauvery shear zone was regional, with terrain-wide rejuvenation. These results correlate with similar Pan-African tectono-thermal events reported from Sri Lanka and East Antarctica, and have an important bearing on Gondwana reconstructions. |
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