Rao, B. K. and Prasad, M. H. (1995) Geochemistry of the phyllites of the Copper Mountain region, Sandur schist belt, Karnataka. Journal of the Geological Society of India, 46 (5). pp. 485-495.
Full text not available from this repository. (Request a copy)Abstract
Chemical composition of the phyllites of the Copper Mountain region of the late Archaean Sandur Schist belt in the eastern block of the Dharwar craton indicates that the fine-grained elastic sediments from which they were formed, were derived from a provenance comprising similar to 60% felsic, similar to 30% mafic and similar to 10% ultramafic rocks. High Zr/Nb and Zr/Y ratios; and lack of strong -ve Eu anomalies suggest that the felsic component of the provenance was dominantly made up of tonalites-trondhjemites; granites and granodiorites were very subordinate constituents. The sediments appear to have accumulated in a continental island are environment. Rarity of granitic constituents in the pre-Dharwar provenance of Sandur basin contrasts with the abundance of such constituents in the provenance for the fine-grained elastic sediments of basins in the western block of the Dharwar craton. The continental crust of the eastern block was apparently less evolved during the pre-Dharwar time as compared to that in the western block of the Dharwar craton.
| Item Type: | Article |
|---|---|
| Subjects: | C Chemical Science > Chemistry |
| Divisions: | Department of > Earth Science |
| Depositing User: | Users 23 not found. |
| Date Deposited: | 21 May 2021 06:12 |
| Last Modified: | 19 Jan 2023 11:22 |
| URI: | http://eprints.uni-mysore.ac.in/id/eprint/16484 |
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