Sivadubramanian, P. and Natarajan, R. and Janardhan, A. S. (1991) Sapphirine-bearing assemblages from Perumalmalai,Palani hills, TamilNadu. JOURNAL OF THE GEOLOGICAL SOCIETY OF INDIA, 38 (5). pp. 532-537.
Full text not available from this repository. (Request a copy)Abstract
A new find of sapphirine-bearing granulite rocks from Perumalmalai area, 15 km from Kodaikanal is reported. These rocks, contain in addition to sapphirine, cordierite-garnet-orthopyroxene-spinel-biotite-plagioclase. Among the pairs, garnet-cordierite gives pressure of 8.5 kb at temperature of 550-degrees-C; garnet-orthopyroxene gives 6 kb at 800-degrees-C and cordierite-garnet-sapphirine gives 7.2 kb at 700-degrees-C. The sapphirine-forming reaction probably took place after the main charnockite event. Evidences of decompression of garnet breaking down to orthopyroxene-spinel-plagioclase-biotite at rather high temperatures indicates rapid uplift.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SAPPHIRINE; PERUMALMALAI; PALANI HILLS; TAMIL-NADU; GEOBAROMETRY; GRANULITES |
| Subjects: | F Earth Science > Geology |
| Divisions: | Department of > Earth Science |
| Depositing User: | Ms Varalakshmi |
| Date Deposited: | 02 Jan 2021 07:30 |
| Last Modified: | 28 Jan 2021 05:34 |
| URI: | http://eprints.uni-mysore.ac.in/id/eprint/14344 |
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